will an Olds 455 bolt to a 4L80E?

[JadXtreme]

I plan on either stroking my 350 to a 383 and getting a wynjammer supercharger on it, or building a full blown race engine Oldsmobile 455 big block. However, I want to be able to bolt it to my 4L80E transmission. I'm aware of the electronics getting the tranny to function properly with the carbed engine, but is there an adapter plate to bolt a Buick/Olds/Pontiac engine to the Chevy trans?

[454cid]

......is there an adapter plate to bolt a Buick/Olds/Pontiac engine to the Chevy trans?

I've seen them advertised, but I don't know anything about them.

[TheBigMortboski]

There must be, there's been about 15 trillion swaps done in old GM stuff. And it might be cheaper and easier than finding a BOP TH400, too.

[JadXtreme]

Well the engine has a TH400 with it as well, but I really want to keep the overdrive. Plus I wouldn't want to use the tranny till it's been gone thru. My 4L80E essentially has only about 30K miles on it.

[TheBigMortboski]

Would selling the 4L80E get you enough cash to build the TH400 up and buy a Gear Vendors overdrive?

[454cid]

Would selling the 4L80E get you enough cash to build the TH400 up and buy a Gear Vendors overdrive?

Aren't the Gear Vendors ODs quite expensive? I can't see how a 4L80e would sell for enough to buy a TH400 and the OD.

[TheBigMortboski]

Aren't the Gear Vendors ODs quite expensive? I can't see how a 4L80e would sell for enough to buy a TH400 and the OD.

That's why there's a question mark on there.

[BlacK20]

Would selling the 4L80E get you enough cash to build the TH400 up and buy a Gear Vendors overdrive?
not even close

[BlacK20]

they do make adapter plates, they arent that great.

[JadXtreme]

Who would make the adapter plate?

[Nasty-Z]

http://www.tciauto.com/tc/bop-engine-adapter-to-chevy-transmission.html

This is the adapter I use in my Oldsmobile with a 700R4 Chevy trans , car has seen probably 30,000 miles with this combo and never a problem.

TCI # 230001

HTH

TOM

[JadXtreme]

That's pretty a reasonable price. What did you do about the starter being that it is on the wrong side of the engine compared to the Chevy tranny?

[2500ak]

455 and a 4l80e would be one badass combination.

[Nasty-Z]

That's pretty a reasonable price. What did you do about the starter being that it is on the wrong side of the engine compared to the Chevy tranny?

Left it where it was :cool:

The engine part dosent change , starter still works the same , its still bolted to the engine , just on the other side

TOM

[1998454]

What is the engine going into?

[Busted Knuckles]

Make sure you check out oiling mods needed to get an Olds to 6 grand and above! Oil volume is low compared to a BBC, mains are HUGE and it's not easy to get enough oil to 'em. I can't tell you how many big Olds engines I've seen spin main bearings because of this.
They're great tow truck engines, though, with their small bore/long stroke.

[Nasty-Z]

Make sure you check out oiling mods needed to get an Olds to 6 grand and above! Oil volume is low compared to a BBC, mains are HUGE and it's not easy to get enough oil to 'em. I can't tell you how many big Olds engines I've seen spin main bearings because of this.
They're great tow truck engines, though, with their small bore/long stroke.

Gary is dead on on this ,

Be sure to do your homework before building an Olds that will see any kind of substantial RPM , the oiling system will need much attention , as well as attention to the rotating assembly .

Put a bunch of $$ in mine just in the oiling system .

TOM

[JadXtreme]

I would like to put it in my 2000 GMC C3500.

I have the book that come out last year about building a performance Olds engine. It addresses the oilling issues associated wtih the heads puddling up with oil and the large mains. I will probably keep the shift points the same as it is now in my GMC, around 5K rpm.

The engine is a Olds 455 out of a 72 Olds 98. Factory rated at 340 hp and 500 torque. I'm getting the engine for free and it has already had the cylinders honed out and the block painted. I'm just going to open up the oil system, do some substaintial head work (or get some aluminum heads), roller cam, high rise intake, Holly double pumper carb. I would like to get it to around 500 hp or so and if I put a cradle in the bottom end, I may be able to squeez more out of it with more rpms.

[Busted Knuckles]

"Full blown race Oldsmobile" and "shift points at around 5K rpm" don't match.
Find someone that needs the block, sell it and buy a good 454 core. Much less headaches, much better support, will make more power.
Plus, when you sell it (in spite of the fact that you now plan to have it forever, most of us sell 'em after a while), you'll have a tough time getting a decent price out of it.
There's a reason that you see more SBC and BBC engines at drag races - they're easy to to work on, parts are cheap and they have a bulletproof oiling system.
Screwball engine swaps are for the guys with a lot of fabrication and mechanical skills. If you want to be different, paint your truck pink. Leave the oddball combos to the folks with a lot of time and money, IMHO.

[1998454]

X2 on what Busted knuckles said. I completely understand doing swaps to be different. If that is your goal then go for it, but don't build the olds for it's power potential. If hp and torque numbers are what your after you should be looking at a bbc or large cube sbc.

[JadXtreme]

I see what your talking about as far as a race engine shifting at 5K rpms. That already is somewhat of a higher rpm shift point being that the stock shift point is 4K or 4500 rpms. I would like the potential of higher shifts, but for all intensive purposes leave the shift points farely low in comparison just for longevity. I haven't started anything yet and am mainly just contemplating what direction that I might go. There wouldn't really need to be much fab work involved. I would really just have to fab up motor mounts and fab a few of the sensors onto the engine and carb for the pcm to run the 4L80E.