454 vs 400 in 1995 trans am

**1bad400** · 06-23-2006, 03:08 PM

my question is I bought a 95 trans am no motor or tranny for 500.00 my budget is 6500.00 my goal is 10sec car is this possible with 6500.00 or should I be looking at 350 with gas I already have a 400 needing rebuild bad and 350 in same shape

**1bad400** · 06-24-2006, 02:24 PM

alright guys nobody out here that can help me I'm an ex import guy that finally wanted a car that has balls and sound like it does also

**Sublime35** · 06-24-2006, 06:37 PM

rebuild the 400 and supercharge it.

**1bad400** · 06-25-2006, 10:58 AM

Ifound a 455 for 600.00 what is different about 454 and 455 besides the obvious. I was thinking of building the 350 for nitrous or going with turbo'd 400 I have a old t4 but I probably need a bigger turbo

**05gtoautoX** · 06-25-2006, 12:20 PM

well is the 455 out of a pontiac, buick or oldsmobile? everyone of them are completely different, and the difference between them and the 454 is everything, (bore, stroke, block size, design, heads, intake etc.) and nothing is interchangable, personally (especially if the 455 in a poncho) I'd go with the 455, it would just be cool, nostalgic, although a little more work I think it would be worth it and it would be unique. for $6500 I'd say you'll be in the 11s, not all of that is gonna be for the engine though, you need a trans. suspension mods, wiring, motor mounts. etc. hey if you need help with locating parts for the 455 (pontiac) email me, jpo_50@hotmail.com, If I don't have it I can get it.

**my1973form** · 06-25-2006, 12:34 PM

Originally Posted by 1bad400

Ifound a 455 for 600.00 what is different about 454 and 455 besides the obvious. I was thinking of building the 350 for nitrous or going with turbo'd 400 I have a old t4 but I probably need a bigger turbo

The 454 is a Chevy engine (big block) and the 455 is a displacement for a Pontiac, Olds, or a Buick motor, otherwise BPO when refuring to the bellhousing for the transmission. The Chevy 454 motor is different that of the BPO, only-Chevy motor w/Chevy Trans will work togther (that is with an adaptor plate). You can bolt a Buick trans to a Pontiac motor 1970-1976 455, 400, 350, or even a 1977- 301. The heads on a 400 Pontiac will bolt right up to a 455 or a 350 they are all the same block 455 are drilled and tapped for 4 bolt main caps but not all have them installed. No old engine swaps will be smog legal, the rear end will never support a 10 second car >475hp; why not put a LS1 in it, then mod it, you said it's a '95 right, it can be done it would be tougher to install a 454 LS6 Chevy to a Pontiac Trans and put it into a '95 Formula but it could be done.

**Street Lethal** · 06-26-2006, 04:38 PM

Originally Posted by 1bad400

my question is I bought a 95 trans am no motor or tranny for 500.00 my budget is 6500.00 my goal is 10sec car is this possible with 6500.00.

If you know what you're doing, absolutely. Question though, what did the 95 Trans Am come with? Although there's no motor or tranny, does it at least have the stock wiring still in tact? I would seriously consider building a bored and stroked LT1 (provided the wiring is still in tact)...

**1bad400** · 06-27-2006, 03:14 PM

wiring still there I was just thinking big power big block the best thing would be going to ls1 vet motor and tranny I located set at loacl yard for 2950.00 plus 750.00 core charge I think this includes ecu

**Street Lethal** · 06-27-2006, 03:22 PM

Originally Posted by 1bad400

wiring still there...

If the wiring is still there, I'd consider going with a 406 LT1...

Originally Posted by 1bad400

the best thing would be going to ls1 vet motor and tranny I located set at loacl yard for 2950.00 plus 750.00 core charge I think this includes ecu

Pretty good deal, definitely consider it!