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73 vette

This is a discussion on 73 vette within the Internal Engine forums, part of the LSx Technical Help Section category; Hi I have 1973 stingray with 92 tpi 350 out of 92 z28 tremec 3550 5 spd 355 rear gear. ...

  1. #1
    Junior Member
    Join Date
    Mar 2008

    73 Corvette

    73 vette

    Hi I have 1973 stingray with 92 tpi 350 out of 92 z28 tremec 3550 5 spd 355 rear gear. It's my daily driver(96 miles each way to work 3 times a week). It's time to refresh the motor. I would like to know what heads to look for. I would like to use aluminum ones. Help?
    Last edited by freightdog; 03-14-2008 at 01:00 PM. Reason: spelling

  2. #2
    Join Date
    Nov 2006

    2001 formula

    Freightdog go over to and post your question in the C-3 tech performance section. Lots of guys over there have corvettes with either the LT-1 and the LS-1 engines. Good folks over there also.

  3. #3
    JUISSED Midnight02's Avatar
    Join Date
    Feb 2007

    Navy Blue Metallic
    2002 Camaro SS

    I concur....the Corvette Forum (website posted in the post above) is a great place to start. Since you have a TPI motor, check out the C4 section......if I recall correctly the TPI motors were in the Corvettes from 1986 - 1990.

    I have an '89 Corvette and did a good bit of research on this. If you're looking for little bump in performance, porting the stock L98 heads has proven to be effective. Provided you're still running a stock TPI intake setup, you'll definitely need to start modding the intake (ported base, ported plenum, better runners, etc.) to give it air to breathe.....otherwise, it will simply die off around 4,500 rpm. Couple ported stock L98 heads with an effectively ported intake setup and a set of LT headers and you'll definitely pick up a nice seat of the pants gain!

    If you're actually looking to replace the stock heads, check out AFR eliminators.....great product, great price!
    2002 Camaro SS M6, 2.5 PRC 5.3L heads, TFS 228/230 cam, FAST 92, bolt ons + a 10 lb bottle in the back.

    1989 Corvette L98, A4, Full bolt ons, etc.

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