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502 Big Block

This is a discussion on 502 Big Block within the Performance forums, part of the General Discussion category; Does anybody of anyone putting a big block chevy engine in a 2000 Silverado? I'm thinking about putting a 502 ...

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    Registered User Silverado79's Avatar
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    Cool 502 Big Block


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    Does anybody of anyone putting a big block chevy engine in a 2000 Silverado? I'm thinking about putting a 502 MPI. Thanks and God Bless!!

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    Re: 502 Big Block

    being some work, one hell of a machine though. what size silverado?

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    Cool Re: 502 Big Block

    It's a 1500 series 1/2 ton LWB. Right now it has a 4.3L V6. On the 502 I'll probably get a 6-71 or 8-71 Blower with fuel injection. Also put a tilt front end.
    Last edited by Silverado79; 08-26-2006 at 12:22 AM.

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    Re: 502 Big Block






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    Re: 502 Big Block

    ummmmm you would have to cut through your firewall and the engine would be in your cab a little. theres no room.

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    Re: 502 Big Block

    A 502 in a NBS pickup is a nice mod

    Quote Originally Posted by AK-47
    ummmmm you would have to cut through your firewall and the engine would be in your cab a little. theres no room.
    They put the 8.1 in these trucks, how much different could the size be?
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    02Z
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    Re: 502 Big Block

    WOW Nick...that's awesome. Blown, injected BBC in a NBS truck. What kind of setup do you have...do you have a 4L80E? What's she running?

    Joe the size is exactly the same. A 496 is just stroked 454 and the 454 and 502 block have exactly the same external dimensions even though the 502 has .22" more bore. My dad and I drag raced...I hada 468 in my car and his was a 509...most of the parts interchange and they are the same size.

    The problem I see with the BBC is how stuffed Nick's truck is and your probably gonna have to make some mods to the floorplans and all to make a bigger tranny fit. The 4L60E isn't going to stand up behind 750 lb. ft. of torque.

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    Re: 502 Big Block

    Why would a 1500 truck need metal work to make a BBC fit when the 2500+ trucks share the same metal

    Is there more room due to the chassis on the 2500 trucks?
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    Re: 502 Big Block

    I believe there shouldn't be any kind of metal work involved, I would think! Member ZZ502 has one on is NBS silverado maybe he could chime in. Looks like there's enough room to support a BB in a 1500.

    Here's a 8.1L stuffed in a 1500!

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    Re: 502 Big Block

    @ 02Z

    I try to bring a 496 gen VII short block to run. I have bought as I did not know enough about this engine and now I think this engine was that cheap because no other engine is interchangeable with the 496. I evan have a offer for 2 further 496 for 500$ a piece (unfortuntely also without computer and harness). I wrote a threat from somebody who bought the engine for 300$!!!
    If the 454 and 502 parts fits, why are this engines are that cheap?
    What all is interchangeable

    Intakes?
    Heads and Valvecovers?
    the Pumps (water, oil, power steering)?
    Starter?
    Ingnition?
    Oilpan?

    If so I do not need to buy one of the other engines as the have no harness and computers anyway and I would like to buy all in alu what as far as possible.

    If there are a interchangeability, please tell which generation.

    Thanks and best regards

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    Re: 502 Big Block

    Yes everything you mentioned is interchangable. As long as you're working with standard deck height (9.80") parts everything will interchange. The oil pan will all depend on the clearance issue. The 454 and 502 swing a 4" stroke crank and the 496 swings a 4.25" stroke. You probably can't run a stock 502 pan on the 496 but most aftermarket pans will work with a 4.25" stroke. This may create a problem with the oil pump and pickup also, but an aftermarket pump is cheap and will definately work with the longer stroke.
    I don't know why the engines are that cheap. Have they been ran hot? Do they burn oil?

    The engine that was in my dad's car (509) was a 502 out of a Ryder style truck. At 3500 miles it started burning oil excessively, so GM replaced the engine. He bought the complete motor for $500. We used the block and crank out of it. Put a set of 13:1 forged pistons, 6.385 Eagle H-beam's, Brodix BB-2Plus heads, a .774 lift mechanical roller, and a 1050 Dominator. She made 805 hp on 110 octane. Ran 8.80's @ 153 all day long. We wound up using the stock 502 rods in the 468 that I had. We put ARP bolts in them and spun that 468 7000 RPM's. Never had a problem and it was making 650 hp.

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    Re: 502 Big Block

    Thanks that all sounds very interesting. What about the ingnition and these electronic stuff. Will a ususal distributor works and I also wrote the the vortec engines fire in a different sequence?
    I hope you know that I did not mean a stroked 454 but the Gen VII Vortec BBC from 2001 (GM 8.1 Workhorse)

    Thanks and best regards

    Hannes

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    02Z
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    Re: 502 Big Block

    I don't know if the 8.1L have distributors or not...I would think that they had coil-on-plug ignition like the 4.8L, 5.3L, 6.0L. Either way the distributors and full ignition will transfer. The firing order for all Chevy V-8's is still 1-8-4-3-6-5-7-2. No matter if your talking about a 265 V-8 in a 55 Chevy or a 5.3L in a 2007 Chevy NNBS truck.

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    Re: 502 Big Block

    It got the coil on plug ingnition but it is not true that the have the same firing order, look ant mor-tec. The Vortec changed.

    Hannes

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    Re: 502 Big Block

    Quote Originally Posted by 02Z
    I don't know if the 8.1L have distributors or not...I would think that they had coil-on-plug ignition like the 4.8L, 5.3L, 6.0L. Either way the distributors and full ignition will transfer. The firing order for all Chevy V-8's is still 1-8-4-3-6-5-7-2. No matter if your talking about a 265 V-8 in a 55 Chevy or a 5.3L in a 2007 Chevy NNBS truck.
    all gen I v8's and LT1's have the same firing order. Alot changed when they went to the LS base motors

    i think all the ls based motors use 1-8-7-2-6-5-4-3
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    Re: 502 Big Block

    Looks like I can use any Vortec harness and computer, is just must get re-programmed.
    There is a company named PCMamerica, they offers nice stand allone harness if I understood the site right and the the computer will dedicated to the engine you want to work with.
    Maybe I can make the 68 Impala SS496 project true ; )

    I still appreciate every hint for geting a 8.1 Vortec to run with the less possible electronic.


    Hannes

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    Re: 502 Big Block

    The stroked 6.0 liters make alot of HP....
    408 w good heads and cam anyone?
    Do a search, save some trouble and use a better engine design w the stroked 6.0, JMHO
    B

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    Re: 502 Big Block

    No, I really like the 8.1 with its 340HP and 455torque stock.
    I cleared the topic already with PCMamerica and they can supply me with a custom stand alone harness and an used, re-programed computer with custom program regarding tire size, rear end-ratio, cam, shiftpoints, shiftfirmnes and 1000 other things.

    Thanks and best regards

    Hannes Slanec

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    Re: 502 Big Block

    You can blow that hp and torque out of the water w a heads cam 6.0 or do even better w a 400+ cid.
    And you don't need to do any serious mods to your plugs/sensors, just plug and play w a tune and the usual complimentry engine upgrades.
    Why step back the hard way when you can get new tech and at a reasonable price, I think you can get a 400 cid for less than 4K....
    Your choice either way, but I know what I'd Do!!
    Good luck w any decision and keep us posted on the results.
    B

 

 

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