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305 carbed to 350 TPI

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Old 03-11-2013, 01:22 AM
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Car: 1986 z28 camaro
Engine: carbed 305/ soon to be swapped
Transmission: 700r4
Axle/Gears: not too sure, how do i find out
305 carbed to 350 TPI

Alright its late im searching around and just cant seem to find what it is im looking for.. :/
I own a 86 Z28 LG4 and im wanting to swap it to a 350 tpi. Okay so i know i need the tpi system, ecm, harness and not sure what else after that.
Another thing is how would i run the harness and where would i place the ecm? any awesome links on a how to or just good old advice would help me out here.
Thank you for yall's time!
Reckless_Rick

Last edited by RECKLESS_RICK; 03-11-2013 at 10:48 AM. Reason: LQ4 meant to put LG4
Old 03-11-2013, 01:48 AM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 305 carbed to 350 TPI

You will have better luck posting in the tpi forum. You can run the tpi harness through the right side kick panel access hole and mount the ecm under the passenger side under the dash in the stock ecm holder. Depending on what year harness you have you may need to make changes to c100 and c207. there is alot of information in the stickies.
Old 03-11-2013, 02:01 AM
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Car: 1986 z28 camaro
Engine: carbed 305/ soon to be swapped
Transmission: 700r4
Axle/Gears: not too sure, how do i find out
Re: 305 carbed to 350 TPI

Alright awesome ill try looking around over in those threads.! Alright, now someone was telling me that i cant just mount a tpi system on any 350 sbc? and im finding that very hard to believe. (hes a ford guy thinks he knows it all)
Old 03-11-2013, 05:51 AM
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Re: 305 carbed to 350 TPI

TPI is just an intake system, as far as bolting it to a motor is concerned. It bolts up to any SBC. You could stick it on a 350 just as easily as on a 265, 400, 307, etc.

Since you have the LG4 now (not LQ4... that's a 6.0L truck motor from around 2000 up), it's computer-controlled, just like TPI is. The ECM for TPI mounts in the same place as your existing one, and the harness will follow the same routing. After all, these cars WERE mass-produced, meaning that it had to be EASY to make one TPI, the next a LG4, the next a 6-cyl, etc., as they rolled down the production line. All the parts for all of those are interchangeable at some level.
Old 03-11-2013, 10:48 AM
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Car: 1986 z28 camaro
Engine: carbed 305/ soon to be swapped
Transmission: 700r4
Axle/Gears: not too sure, how do i find out
Re: 305 carbed to 350 TPI

opps thats what i meant LG4!! lol
ANd ooh okayy awesome well looks like imma start on this today.. wish me luck guys
Old 03-11-2013, 11:42 AM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 305 carbed to 350 TPI

You also need a high pressure fuel pump like a acdelco ep-241,and a return line to the gas tank. If you have a ecm already you can post the letters off the chip for identification but if you get one from a 89 f-body it would have vats.
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