305 - 350 swap
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Joined: Jun 2006
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From: Sac, CA
Car: Chevy IROC - Z 86'
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.73
305 - 350 swap
Hey guys i had a couple of questions for a 350 swap.
I have a 1986 Camaro 305 TPI and I wanted to swap the motor for a 350, but the 350 is out of a 69 Camaro, will the 350 fit right it in? IM only going to use the block, not the heads.Im planning on putting on some new heads from GM Performance Parts Fast Burn Cylinder Heads. Can I still use my tpi on the motor? And i was wondering if a just got a hypertech chip for the car, would it handle the 350? What other common things would i have to change to get it to work right? Thanks
I have a 1986 Camaro 305 TPI and I wanted to swap the motor for a 350, but the 350 is out of a 69 Camaro, will the 350 fit right it in? IM only going to use the block, not the heads.Im planning on putting on some new heads from GM Performance Parts Fast Burn Cylinder Heads. Can I still use my tpi on the motor? And i was wondering if a just got a hypertech chip for the car, would it handle the 350? What other common things would i have to change to get it to work right? Thanks
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org. Sacramento? I'll be there next week.
The Fast Burns use the Vortec port arrangement. Although they are drilled to accept the old "standard" bolt pattern, the ports are raised and a stock TPI base will not cover the top of the ports. A Vortec base would be better.
They are also pretty big heads. A TPI system would basically need all new parts to be able to flow adequately to feed them. A Miniram is a good option to consider. TPIS makes one specifically for the Fast Burns.
The MAF system will probably be overwhelmed by the flow capability of the heads and any induction system you put on it to feed them. Converting to speed density would be a good way to go there, I'd think.
Oh, the '69 block will be fine. It will have a 2-piece rear main seal, meaning you'll need a different flexplate/flywheel; and the dipstick will be on the driver's side, which won't be a problem if you have headers (which you should if you expect any performance out of those heads). You may also need to drill and tap another starter mount bolt hole.
The Fast Burns use the Vortec port arrangement. Although they are drilled to accept the old "standard" bolt pattern, the ports are raised and a stock TPI base will not cover the top of the ports. A Vortec base would be better.
They are also pretty big heads. A TPI system would basically need all new parts to be able to flow adequately to feed them. A Miniram is a good option to consider. TPIS makes one specifically for the Fast Burns.
The MAF system will probably be overwhelmed by the flow capability of the heads and any induction system you put on it to feed them. Converting to speed density would be a good way to go there, I'd think.
Oh, the '69 block will be fine. It will have a 2-piece rear main seal, meaning you'll need a different flexplate/flywheel; and the dipstick will be on the driver's side, which won't be a problem if you have headers (which you should if you expect any performance out of those heads). You may also need to drill and tap another starter mount bolt hole.
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