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How can i tell what engine my car originally had?

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Old 02-05-2013, 11:34 PM
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Car: 88 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: Posi
How can i tell what engine my car originally had?

I need to figure out what the original engine was because i would like to sell the computer from it. VIN says its a 305 V8 but i dont know if its a TBI or TPI. Today the car has a 350 carbureted performance motor.
So there are no RPO codes. The car is a 1988 firebird formula.
Any differences in wiring or something that could give me a clue.
Old 02-05-2013, 11:42 PM
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: How can i tell what engine my car originally had?

Originally Posted by LostX
I need to figure out what the original engine was because i would like to sell the computer from it. VIN says its a 305 V8 but i dont know if its a TBI or TPI. Today the car has a 350 carbureted performance motor.
So there are no RPO codes. The car is a 1988 firebird formula.
Any differences in wiring or something that could give me a clue.
Does it still have the RPO sticker in the center console?
Old 02-06-2013, 12:10 AM
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JT
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Re: How can i tell what engine my car originally had?

Look at the 8th digit of the VIN. F is the 305TPI. 8 is 350TPI. E is the 305TBI.
Old 02-06-2013, 12:04 PM
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Car: 88 Trans Am
Engine: 350
Transmission: T5
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Re: How can i tell what engine my car originally had?

thanks its E 305TBI
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