New Sub forum for Big Block Engines.

[454ss]

Now get to it and fill this place up:D

[someotherguy]

Thanks. :D I've kicked it off with a split-up of an old tech post of mine and put a notice in the monster sticky-thread in the Tech section; hopefully we'll get everyone over here and contributing soon!

Richard

[srracer]

454SS,

What is that whipple setup in your Sig pic? I just picked up a used Whipple kit for my '99 7.4L Sub, and I've been doing a LOT of research and I have yet to see a 7.4L whipple mount on top of the intake like that. Is it a custom intake?

More details, PLEASE!

Thanks!

[MDietrich]

About time!!!!!!!!

[454cid]

Very good!!!

[durbo.jones]

That is an old Whipple setup that has been discontinued. It was specific for the TBI engines. I have seen a pic of one somewhere a while ago but nothing recently.


454SS,

What is that whipple setup in your Sig pic? I just picked up a used Whipple kit for my '99 7.4L Sub, and I've been doing a LOT of research and I have yet to see a 7.4L whipple mount on top of the intake like that. Is it a custom intake?

More details, PLEASE!

Thanks!

[Honey Bear]

Ohh I haz a BB I wanna play.

[BigBlockChucky]

I got 2. I am game.

[Honey Bear]

I got 2. I am game.

Showoff

[BigBlockChucky]

Showoff
Actually 3. The one on the engine stand I am not counting. Want one?

[Honey Bear]

sure email me one

[99urbansuburban]

I am in, been reading the other long thread not even close to being finished.

[99urbansuburban]

hey guy I was just thinking about the timing chain advance fromt the stock retard, will it change emissions? or just power band?

[someotherguy]

hey guy I was just thinking about the timing chain advance fromt the stock retard, will it change emissions? or just power band?
We have a whole forum here for topics related to big blocks so please do start a new thread with your question - otherwise if everything gets asked in the same thread, it ends up 467 pages long like the previous one. :D

Richard

[K Berg]

Yeah I used to like the old thread but there is way too much crap that seems like a lot of it is the same thing over and over again. I gave up on keeping up with it. I can't sit in front of a computer for that long to keep up with this thread and my Chevelle thread along with my boat one... So are we doing all big blocks or just new Vortec or basically anyone with a 366 tall deck to a ZZ572? I'm still a mark IV 454 fan but I got a Gen 6 in the 99 K2500 Burb. Richard- You gotta have some interesting stuff in your collection of parts. I seen some of the trucks you put together on here.

[K Berg]

First thing we need on page 1 is someone to dig up the casting number info so we got it in an easy reference spot I see Mortec only works through internet archives or something. I guess the site is no longer maintained? Oh well, it seemed helpful. I'll see what I can dig up.

[K Berg]

BBC Block Castings

0-326711.....................4-bolt, Alum., CanAm, 4.44" bores, steel cylinder liners
340220.....427T......68-85...4-bolt
345014.....454.......70-86...
346236.....454.......75-76...2-bolt
359070.....454.......70-90...
361959.....454.......73-90...2 or 4 bolt
364776.....427T......68-85...4-bolt
364779.....366T......68-90...4-bolt
399204.....509.......70-71...4-bolt, Alum., CanAm, 4.5" bores, steel Cylinder liners
399293.....366T......77-78...4-bolt
473478.....427T......77-90...4-bolt
495102.......................4-bolt, Alum., CanAm, 4.5" bores
3782870....427T......68-76...4-bolt
3824553....366T......66-67...4-bolt
3855961....396.......65-66...2 or 4 bolt
3855961....427.......66......2-bolt
3855962....396.......65-66...4-bolt
3855977....366T......66-73...4-bolt
3869942....427.......66-67...2 or 4 bolt
3902406....396.......67......2 or 4 bolt
3904351....427.......67......2 or 4 bolt
3904354....366T......66-76...4-bolt
3916319....366T......68......4-bolt
3916321....427.......68......2 or 4 bolt
3916323....396.......68......2 or 4 bolt
3925521....427T......68-85...4-bolt
3935439....427.......68-69...2 or 4 bolt
3935440....396.......68-69...2 or 4 bolt
3937724....366T......68-85...4-bolt
3937726....427T......68-84...4-bolt
3946052....427.......69......4-bolt, Alum. ZL-1, Mark IV
3946053....427.......97-up...4-bolt, Alum. ZL-1, 2nd version, Mark IV
3955270....427.......69......2 or 4 bolt
3955272....396.......69......2 or 4 bolt
3955274....366T......68-85...4-bolt
3955276....427T......68-73...4-bolt
3963512....427.......69......2 or 4 bolt
3963512....454.......70-76...2 or 4 bolt
3969852....366T......68-84...4-bolt
3969854....396.......69......2 or 4 bolt
3969854....402.......70-72...2 or 4 bolt
3969858....427T......68-84...4-bolt
3999289....454.......71-79...2 or 4 bolt, some "CE" replacement blocks had four bolt main caps
3999290....396.......68-69...2 or 4 bolt, Truck
3999290....402.......70-72...2 or 4 bolt, Truck
3999290....402.......72......2 or 4 bolt, Passenger
3999293....366T......68-90...4-bolt
3999294....427T......68-84...4-bolt
10051107...454...............4-bolt, Bowtie, MkIV, 9.8" deck, siamesed bores, 4.25" semi-finished bores, can be bored to 4.50"
10069282...366T......90-91...4-bolt, Mark IV, Tall deck
10069284...427T..............4-bolt, Mark IV, Tall deck
10069286...454.......90-91...4-bolt, Mark IV, Short deck
10114182...454.......91-up...4-bolt, Gen.V
10114183...366T......91-up...4-bolt, Gen.V
10114184...427T......91-up...4-bolt, Gen.V
10134366...454T..............4-bolt, Bowtie, Gen.V, Tall deck
10185050...454...............4-bolt, Bowtie, Gen.V, Short deck
10237297...454.......96-up...4-bolt, Vortec 7400", "L-29" Gen.VI
10237299...427T......96-up...4-bolt, Gen.VI, 7.0L, truck
10237300...502.......96-up...4-bolt, Gen.VI, 4.466" bore
12550312...427T......96-up...4-bolt, Gen.VI, 4.250" bore, fuel pump boss, clutch linkage pivot boss
12550313...454.......91-up...4-bolt, Gen.V crate motor, Gen. VI 4.25" bare block, fuel pump boss
12556110...496.......01-up...4-bolt, Gen.VII 8.1L, "Vortec 8100", Truck
12561357...454.......96-up...4-bolt, Gen.VI
12561358...502...............4-bolt, Gen. VI
14015443...454.......87-90...2 or 4-bolt, Mark IV, Truck, Motorhome
14015445...454.......78-90...2 or 4 bolt
14044807...454T..............4-bolt, Bowtie, MkIV, CNC prep, Tall deck, 4.25" bore or 4.495" bores
14096859...502...............4-bolt, Gen.V, HO
24502504...454...............4-bolt, Bowtie, Gen.V, Race prep, 9.8 "short" deck height
24502506...454T..............4-bolt, Bowtie, Gen.V, Race prep, 10.2 "tall" deck height
24502572.....................4-bolt, 4.5" bore Olds DRCE 2, 9.5" deck height
25534402.....................4-bolt, 4.590" bore Olds DRCE 3, 9.25" deck height



T = Tall deck, 10.2" deck height


1991 and later Gen.V, VI and VII production BBC motors have one-piece rear main crank seals.

[K Berg]

BBC HEADS

330864.....68-84...oval...OPEN...396, 402, 366T,
427T, 454 Truck
330865.....68-84...oval...OPEN...396, 402, 366T,
427T, 454 Truck
330866.....68-78...oval...OPEN...366T, 427T
330867.....68-73...oval...OPEN...427T
336765.....68-78...oval...OPEN...427T
336768.....73-76...oval...OPEN...427T
336781.....73-85...oval...OPEN...454, 118cc chamber, 256/114cc ports
343771.....68-86...oval...OPEN...366T, 427T, 454
343772.....68-86...oval...OPEN...366T, 427T, 454
343783.....70-76...oval...OPEN...454 Truck
346236.....75-87...oval...OPEN...454, 120cc chamber, 225/116cc ports
352625.....70-76...oval...OPEN...454 Truck
353049.....73-84...oval...OPEN...454, 122cc chamber, 255/119cc ports
366765.....74-78...oval...OPEN...427T
473328.....68-69...oval...OPEN...366T
3856206....65-66...oval..CLOSED..396, 97cc chamber
3856208....65......rect..CLOSED..396/425hp, 109cc chamber
396/375hp "Z-16" Chevelle
3856213....66-82...oval..CLOSED..366T, 427T
3856260....68......oval..CLOSED..396 Truck
3872702....65-66...oval..CLOSED..396, 427, 98cc chamber
3873858....65-67...rect..CLOSED..396, 427, 109cc chamber
3876875....77-85...oval...OPEN...427T
3904390....67......oval..CLOSED..396, 427, 98cc chamber
3904391....67......rect..CLOSED..396, 427, 107cc chamber
3904392....67......rect..CLOSED..427, Aluminum, L88, L89, 107cc chamber
3904393....68-76...oval...OPEN...366T
3908952....67......oval...OPEN...427, "M.Truck", Marine
3909802....67......oval..CLOSED..396, 427, 101cc chamber
3917215....67-68...oval..CLOSED..396, 427, 101cc chamber
3917219....68-85...oval...OPEN...366T, 427T
3919840....67-69...rect..CLOSED..396, 427, 107cc chamber
3919842....68-69...rect..CLOSED..396, 427, Aluminum L88, L89, 107cc chamber
3931063....68-69...oval..CLOSED..396, 402, 427, 101cc chamber
3933148....69-84...oval...OPEN...'69 396/265hp, 366T, 427T, 112cc chamber
3933149....68-76...oval...OPEN...427T, 122cc chamber
3935401....68-76...oval...OPEN...427T
3946074....69&71...rect...OPEN...'69 427 L88, ZL1, Aluminum, 118cc chamber
'71 454 LS6, "round exhaust port"
3964290....69-70...oval..CLOSED..396, 402, 427, 454, 101cc chamber
Large or small hex spark
plugs used
3964291....69-72...rect..CLOSED..396, 402, 427, 454, 109cc chamber, Large or small hex spark plugs used, crate motor usage in years after 1970.
3965198....68-69...oval..CLOSED..396 Truck
3975950....68-70...oval...OPEN...396, 402 Truck, 366T, 427T
3986133....68-85...oval...OPEN...366T, 427T, 454 Truck
3986135....69-73...oval...OPEN...366T, 427T
3986136....68-84...oval...OPEN...366T, 427T, 454 Truck
3993820....71......oval...OPEN...402, 113cc chamber, 255/114 ports
3993820....71-84...oval...OPEN...454 Passenger and Trucks, 113cc chamber, 255/114 ports
3994026....71......rect...OPEN...454 LS6, 118cc chamber
3999241....72......oval...OPEN...402, 454, 113cc chamber

6272292....70-78...oval...OPEN...402, 454
6272990....70-up...rect...OPEN...454 service replacement, used on some MKIV crate engines, 118cc chamber
10045427...........rect..........Pontiac/Chevy Aluminum, 91cc chamber
Large Port, race
10049875...........rect..........Pontiac/Chevy Aluminum
Small port, race
10051128...........rect..........Bowtie, Aluminum 72cc chambers
Symmetrical ports
10051129...........rect..........Bowtie, Aluminum "raw"
casting, Symmetrical ports
10052902...........oval...OPEN...MkIV, 427T
10101140...91-up...oval..CLOSED..Gen.V 366T, 427T
10114156...91-up...oval...OPEN...Gen.V & VI 454, 118cc chamber
10141279...96-up...oval..CLOSED.."Vortec 7400", 100cc chambers
10487052...77-90...oval...OPEN...366T
12363391...96-up...oval...OPEN...Bowtie, Aluminum, Signature
Series, fits MKIV, Gen.V, Gen.VI, 110cc chamber
12363401...96-up...rect...OPEN...Bowtie, Aluminum, Signature
Series, fits MKIV, Gen.V, Gen.VI, 118cc chamber
12558162...01-up...oval..CLOSED..Gen.VII,"Vortec 8100", 8.1L, 496, truck
12560241...98-up...oval..CLOSED.."Vortec 7400", 100cc chambers
12562932...91-95...oval...OPEN...Gen.V, truck crate motor, 118cc chambers
12562933...91-95...oval...OPEN...Gen.V, 118cc chambers
12562934...00-up...rect...OPEN...Gen.VI 502 Marine
14011077...69-up...rect...OPEN...Aluminum, fits MKIV, "C-port"
118cc chamber, also sold as a "solid" head
14044861...84-96...rect..........Bowtie, Aluminum, MkIV,
"raised runners", 1st design, 105cc chamber
14044861...96-up...rect..........Bowtie, Aluminum, Signature
Series, fits MKIV, Gen.V, Gen.VI
"raised runners", 2nd design, 115cc chamber
14044861...84-96...rect..........Bowtie, Aluminum, MkIV
"raw" casting of "861" MKIV
1st design
14081045...78-87...oval...OPEN...454
14081052...85-87...oval...OPEN...366T, 427T, 454 Truck, Marked "HiPerf"
14092359...86-90...oval...OPEN...366T, 427T, Marked "HiPerf"
14092360...86-90...oval...OPEN...454 Truck, "peanut" round ports
14096188...70-71...rect...OPEN...454 service replacement, also used on later Mark IV LS-6, LS-7 and 454 HO crate motors, 116cc chamber
14097088...91-up...rect...OPEN...Gen.V 454/502 HO, 118cc chamber
24502585...97......rect..........Olds/Chevy, DRCE 2,
Pro Stock aluminum, for blocks w/4.900" bore spacing
25534404...04......rect..........Olds/Chevy, DRCE 3, Pro Stock, aluminum, for blocks with 4.900" bore spacing

T = Tall deck

Oval includes both "peanut" (also called "round") ports and large oval ports

[K Berg]

348 - 409 "W" Engine Block casting numbers:
3732755.....348......59-61
3732811.....348......58
3751872.....348......58
3755011.....348......59-61
3771705.....348......59-61
3782012.....348......58-61
3788068.....409......62-63
3795623.....409......61
3798962.....348......62-65...Truck
3815707.....348......58-61
3830814.....427......63......"Z11" (4.312" bore x 3.65" stroke)
3830814.....409......63-64
3839752.....409......62-63
3839754.....409......65
3844422.....409......63-65
3857655.....348......62-65...Truck
3857656.....409......64-65
3860386.....409......62-64
3860387.....348......58

348 - 409 "W" Engine Cylinder Head casting numbers:
3732791.....348......58-60
3758379.....348......59-61...250 hp
3759256.....348......58
3759332.....348......58-60
3764702.....348......60......Truck
3767738.....348......59-60...250 hp
3781147.....348......60-61...HiPerf, 2.06"/1.72" valves
3781173.....348......60......1.94"/1.66" valves
3795586.....348/409..61......HiPerf, 2.06"/1.72" valves
3814690.....409......62-63...HiPerf, 2.19"/1.72" valves
3815643.....348/409..58-62...Truck, Industrial
3815857.....348/409..58-62...Truck
3819333.....348/409..62-65...HD Truck
3830817.....409......63-65...340 hp
3837731.....427......63......"Z11" (4.312" bore x 3.65" stroke)
3852583.....409......63-65...HiPerf, 2.19"/1.72" valves

[K Berg]

BBC TWO PIECE REAR MAIN OIL SEALS
3.76" STROKE used on '65-'90 Mark IV 366T, 396, 402, 427 or 427T


6223.......396,402,427...forged, 1053 steel
7115.......396,402,427...forged, nitrided, cross-drilled, 5140 steel
3804816....396,402,427...cast
3856223....396...forged
3863114....402...
3863144....396,402...
3874874....396,402...
3879621....427...forged
3882841....396...forged, cross drilled, nitrided
3882842....427...forged, cross drilled, nitrided
3882847....
3882848....
3882849....427...forged
3887114....396...forged, nitrided, 5140 steel
3904815....396,402...cast, nodular iron
3941180....
3942411....
3965746..........semi finished, forged
3993804..........raw, 5140 steel


BBC ONE PIECE REAR MAIN OIL SEAL
3.76" STROKE used on '91-up Gen.V and Gen. VI 366T, 427T


10114186...427T...forged, 1053 steel
10114187...366T...cast
10114189...427T...cast



TWO PIECE REAR MAIN OIL SEALS
4.00" STROKE used on '70-90 Mark IV 454 or Mark IV 502


3520.......454...forged, cross-drilled, 1053 steel
3521.......454, 502...forged, cross-drilled, 5140 steel
3524.......454...forged
7416.......454, 502...forged, cross-drilled, 1053 steel
7463.......454...forged
336782.....454...cast
353039.....454...cast
353638.....454...
359730.....454...
3962523....454...forged
3963523....454...
3963524....454...forged
3967416....454...forged
3967463....454...forged
3975945....454
3963521....454...forged, cross drilled, 5140 steel
3965753..........semi finished, forged, 5140 steel
3975495....454
3993878....454...forged
10051169...454...forged raw casting


ONE PIECE REAR MAIN OIL SEAL
4.00" STROKE used on '91-up Gen.V and VI 454 or 502


10114188...454......cast
14097044...454,502..forged, 1053 steel


CHEVY 348-409 "W" MOTOR V-8 Crankshaft Casting Numbers


3732692...348...forged...3.25" stroke
3733223...348...forged...3.25" stroke
3733226...348...forged...3.25" stroke
3741640...348...forged...3.25" stroke
3741642...348...forged...3.25" stroke
3788072...409...forged...3.50" stroke
3795589...409...forged...3.50" stroke
3824553...348...forged...3.25" stroke
3829027...409...forged...3.50" stroke
3837466...409,427 "Z11"...forged...3.65" stroke
3838416...409...forged...3.50" stroke

[K Berg]

CHEVY BIG BLOCK V-8 BORE AND STROKE



366T = 3.935" x 3.76"
396 = 4.096" x 3.76"
402 = 4.125" x 3.76"
427 = 4.250" x 3.76"
427T = 4.250" x 3.76"
454 = 4.250" x 4.00"
496 = 4.250" x 4.37" (2001 Vortec 8100, 8.1 liter)
502 = 4.466" x 4.00"
572T = 4.560" x 4.375" (2003 "ZZ572" crate motors)

T = Tall Deck

ALL production big blocks used a 6.135" length rod.



CHEVY 348-409 V-8 BORE AND STROKE


348 = 4.125" x 3.25" (6.125" rod)
409 = 4.312" x 3.50" (6.010" rod)
427 = 4.312" x 3.65" (6.135" rod) 1963 "Z11" SHP drag race

[someotherguy]

K BERG - thanks for posting the info but can you please make a separate thread for it? We have a whole forum to post threads dedicated to each individual subject on big blocks, if we post it all in this one thread then it'll end up just like the old 467 page one which is impossible to find anything in. Thanks. :D

Richard

[K Berg]

I would if I knew what the hell I were doing with a computer. I think it will be one of those things where I'll have to delete them and make a general casting numbers thread for GM small and big blocks. Then the rest of these guys could add the LS stuff to it if they feel the need to. Maybe one of you more computer-literate guys could help out?

[someotherguy]

No biggie, just instead of clicking the red button at the top/bottom of a message that says "Reply to Thread", when you're looking at the list of messages in this section, you'll see a similar red button that says "Post New Thread" - that's the one you want. Check it out...circled in green:

http://www.someotherplace.com/temp/postnew.jpg

Richard

[COONDOG 96]

i have looked everywere for long tube headers for my 97 k3500 dully 7.4. were is everyone finding them. banks only makes the kit for the campers anymore.

[1998454]

Buy them for a 95 back tbi truck. You will have to extend the o2 wires and make an extension for the egr and install a fitting for it in the collector.
i have looked everywere for long tube headers for my 97 k3500 dully 7.4. were is everyone finding them. banks only makes the kit for the campers anymore.

[PonyKiller87]

Buy them for a 95 back tbi truck. You will have to extend the o2 wires and make an extension for the egr and install a fitting for it in the collector.

You will also need a completely custom exhaust from the headers back. The reason I haven't installed mine yet is I don't see a good way to get the drivers side pipe back over to the pass side without having a pipe hanging low or right under the tranny pan.

What I plan on doing is taking the stock gas tank out and replacing it with a suburban tank, then running the exhaust straight back on each side.

[Honey Bear]

How about instead of posting questions in the thread telling about the new sub forum- you actually click on the big red NEW POST button on top of the page and post a new thread where it can be found. I realize how hard it can be to figure it out but give it a try.

[1998454]

The truck I seen them on had about two inches of the collector cut off and a mandrel bent 90 welded on. It didn't hang down bad at all. He ran 3 inch over and merged to a single 4 inch system. I thought about a 3 inch body lift, that would allow the pipe to cross over the top in front of the transfer case. I just don't think i would like the frame hanging down like ours does with the body lift.
You will also need a completely custom exhaust from the headers back. The reason I haven't installed mine yet is I don't see a good way to get the drivers side pipe back over to the pass side without having a pipe hanging low or right under the tranny pan.

What I plan on doing is taking the stock gas tank out and replacing it with a suburban tank, then running the exhaust straight back on each side.

[someotherguy]

How about instead of posting questions in the thread telling about the new sub forum- you actually click on the big red NEW POST button on top of the page and post a new thread where it can be found. I realize how hard it can be to figure it out but give it a try.
The funny thing is the reply is right under my post showing a nice big pretty picture of the POST NEW THREAD button. :D

Richard