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Lg4 TPI?

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Old 09-25-2005, 10:40 AM
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Car: 1986 Camaro Z28
Engine: 400
Transmission: T5
Axle/Gears: 10 bolt Posi 3.73
Lg4 TPI?

Can I put TPI from an 87 camaro onto my 86 LG4 motor? It's got stock heads. Also, does it matter that the 87 TPI is off a automatic car and mine is a five speed? Are there differences in the computers?
Old 09-25-2005, 11:37 AM
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Re: Lg4 TPI?

Originally posted by Codename 47
Can I put TPI from an 87 camaro onto my 86 LG4 motor? It's got stock heads.
Yes. The stock (LG4) heads are not going to be optimal with that induction system, however. Niether is the cam.

Originally posted by Codename 47
Also, does it matter that the 87 TPI is off a automatic car and mine is a five speed?
Not really. There may be some minor differences in the wire harness. You will need a PROM/CALPAK from an automatic car to operate properly, or reprogram what you have.

Originally posted by Codename 47
Are there differences in the computers?
No.
Old 09-25-2005, 12:00 PM
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Old 09-25-2005, 12:12 PM
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The angles of some of the intake mounting bolt holes on the 87 manifold are different than the 86 heads. You will have to re-drill the manifold.
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