Exhaust casting numbers needed

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Dec 1, 2005 | 02:28 PM

kaptinkafeen

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From: Erin, Ont

Exhaust casting numbers needed

I am looking for 1991 305cid exhaust manifold casting numbers. Can anyone pass this along?
I don't think there is a difference between the TPI and TBI cars, but please correct me if I'm wrong.
Thanks
Andrew

Dec 1, 2005 | 06:15 PM

five7kid

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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

https://www.thirdgen.org/techbb2/sho...hreadid=333621

Dec 2, 2005 | 12:09 AM

mnorton

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From: Northern California, Redding

Car: Red 1987 IROC Convertible

Engine: 305 LB9 TPI

Transmission: T5 5-Speed

Axle/Gears: 9-Bolt 3.45

I have an 87 LB9 with G92 and a single CAT. The stock manifolds are part numbers 14094063 & 14094064 and measure 2.19 inches inside diameter of the outputs. I'm not sure if they are what you are looking for....

Dec 2, 2005 | 07:56 AM

kaptinkafeen

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From: Erin, Ont

Thanks mnorton and five7...

If there is no difference between TBI and TPI cars, then your part number would be what I am looking for, but after reading throuhg five7kids thread-link I am confused... G92 TPI cars 305cid with the dual cats, did they have different exhaust manifolds? They did have a different exhaust set up, and this is how they gain the added hp#... but was this just based on the two cats under the car, or where the exhausta manifolds indeed different?
ANyone else have any info