Can I put a 350 TPI engine into my Firebird Coupe without too much troubles?
Thread Starter
Supreme Member
Joined: May 2002
Posts: 1,014
Likes: 3
From: Quebec, Canada
Car: 1988 Pontiac Firebird Formula 350
Engine: 5.7L
Transmission: Automatic 4 speeds
Axle/Gears: 2.77
Can I put a 350 TPI engine into my Firebird Coupe without too much troubles?
Hello all, I'm not new but I don't post very much (been working hard). I wan't to know if I can put a 350 TPI engine in my 1989 Pontiac Firebird Coupe that have a 2.8L engine and automatic transmission? Do I need to modify my suspensuion? My hood, brakes etc etc? I'm not a pro in mechanics so please explain it the simpliest possible if you can
And I talk french so I'm not too good in english.
See ya!
And I talk french so I'm not too good in english.
See ya! Thread Starter
Supreme Member
Joined: May 2002
Posts: 1,014
Likes: 3
From: Quebec, Canada
Car: 1988 Pontiac Firebird Formula 350
Engine: 5.7L
Transmission: Automatic 4 speeds
Axle/Gears: 2.77
I'm not very good in english but I still understand, don't be shy and reply
Supreme Member
Joined: Aug 2001
Posts: 1,228
Likes: 1
From: Caldwell, NJ
Car: 88 IROC Convertible
Engine: 305 TPI
Transmission: Raptor 700
yes you could swap the engine but you'd need the engine, wiring harness, ecm and all that unless you're going carbed. as for suspension i'm not sure if you'd have to change them but you'll def have to change the motor mounts for the 350. i'm not to sure about the specifics as i'm sure someone else can help you out with that. check the engine swap board on this website you'll get better info there. But to answer your general question, yes it is possible to swap in a 350 in place of your v6
This is from the FAQ section of the site:
Hope that helps.
Q: Does it pay to swap my 4 or 6 cylinder engine for an 8 cylinder?
A: First of all, you have to decide if you are going to keep the computer system. It's a bigger hassle if you do. Your best bet is to go to a junkyard or find someone who is parting out a V8 Camaro/Firebird, and pull as many parts as possible off the same car. You will need brackets (i.e. alternator, AC, smog pump, and power steering pump - save the bolts too), AC hoses, and Pulleys. You will also need new rubber motor mounts (about $20 at local parts store) and the engine side brackets that these mounts bolt to. Make sure you get the engine side motor mount brackets from a Camaro or Firebird as they are a little shallower and are needed to get the engine to sit low enough in the bay. The holes for the motor mounts are already in your crossmember. You will also need to get the engine fan and fan shroud (junkyard or new - your choice). You will need to buy a starter, water pump, and probably a power steering pump (get thses from a junkyard as they're almost always still good). You'll need a V8 HEI distributor. An ACCEL rebuilt HEI works great and costs less than $150.00. And of course plugs and wires. Assuming an automatic tranny, you will need a new tranny since the bellhousing bolt pattern is different on the V8 car from the 4 and 6 cylinders. A Turbo 350 will bolt right in with B&M's $75.00 conversion kit. It just lets you hook up the torque arm, but you'll lose overdrive. Take a polaroid camera to the junkyard, and you should be able to figure all this stuff out. Finally, you will probably have to change the front coil springs. I know this sounds like a ton of work (especially since it doesn't even include what you have to buy to assemble the engine), but this swap is really a piece of cake - everything drops in like it was supposed to be there. At the very least, assemble all the components you'll need (build the motor on an engine stand over a few months with all accessories and brackets), and have someone drop it in for you. A shop would charge you an arm and a leg if they had to scrounge all this stuff up themselves. For further info, send an e-mail to Chris (cblandin0@aol.com).
A: First of all, you have to decide if you are going to keep the computer system. It's a bigger hassle if you do. Your best bet is to go to a junkyard or find someone who is parting out a V8 Camaro/Firebird, and pull as many parts as possible off the same car. You will need brackets (i.e. alternator, AC, smog pump, and power steering pump - save the bolts too), AC hoses, and Pulleys. You will also need new rubber motor mounts (about $20 at local parts store) and the engine side brackets that these mounts bolt to. Make sure you get the engine side motor mount brackets from a Camaro or Firebird as they are a little shallower and are needed to get the engine to sit low enough in the bay. The holes for the motor mounts are already in your crossmember. You will also need to get the engine fan and fan shroud (junkyard or new - your choice). You will need to buy a starter, water pump, and probably a power steering pump (get thses from a junkyard as they're almost always still good). You'll need a V8 HEI distributor. An ACCEL rebuilt HEI works great and costs less than $150.00. And of course plugs and wires. Assuming an automatic tranny, you will need a new tranny since the bellhousing bolt pattern is different on the V8 car from the 4 and 6 cylinders. A Turbo 350 will bolt right in with B&M's $75.00 conversion kit. It just lets you hook up the torque arm, but you'll lose overdrive. Take a polaroid camera to the junkyard, and you should be able to figure all this stuff out. Finally, you will probably have to change the front coil springs. I know this sounds like a ton of work (especially since it doesn't even include what you have to buy to assemble the engine), but this swap is really a piece of cake - everything drops in like it was supposed to be there. At the very least, assemble all the components you'll need (build the motor on an engine stand over a few months with all accessories and brackets), and have someone drop it in for you. A shop would charge you an arm and a leg if they had to scrounge all this stuff up themselves. For further info, send an e-mail to Chris (cblandin0@aol.com).
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