Putting a 400 into a 1980 Firebird

[petereggy]

I have a 1980 firebird now with a 301 and a T350 tranny, Im wanting to put a mid 70's 400 with a T400 tranny into it. Will all of the engine mounts and tranny mounts line up? and is there anything else that I will need to do? any help is much appreciated

[bking120]

the engine will mount just fine the tranny should as well i did the same thing in a 80 ta i had it was a long process but worked great and btw u might want to update the exhaust if u have not done so

[petereggy]

yah im planning on building the engine into a half day to day and half drag car

alright so I shouldnt encounter any problems doing this?

[bking120]

u shouldn' have any problems its not even a tight squeeze u r going to need some new bypass belts well i did i took out my ac since it didn't work and i put on a new fan u might need a bigger radiator i found one at a junk yard and they gave it tp me 3 core might work i had a 2 so i put a 4 in it if u have a 2 u need a bigger one other than thateverything worked.

[petereggy]

what would i need bypass belts for?

[TheRealShiz]

more horses.

[petereggy]

how so?????

[petereggy]

would it work with my current T-350 as well?

[bking120]

your 350 t should bolt up to as well.. the less belts running = less strain on your motor= more hp.

[petereggy]

well it dosent have ac so the only other thing to bypass is the smog pump which ill take apart and then just leave the pully to spin freely

[bking120]

i would just bypass that pully all together there pretty cheep for a bypass belt i think they were like 4 dollars a piece less pullys running he better pluss smaller belts are better as well. let me know how this process works out

[petereggy]

i will

but the pump still needs to spin cause if air care inspects the engine compartment i will fail it on the spot

and i just hate aircare cause if u dont got the cats and that stuff it dosent matter what comes out the tail pipes you still fail