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Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

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Old 01-18-2001, 12:09 AM   #1
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Join Date: Aug 1999
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Car: 89 Formula / 09 G8
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L98 heads for 383
Can i get away with a set of L98 heads and not kill the performance of a 383? I will probably end up getting the Sportsman-II's. Will they fit the stock TPI intake? I think i heard that the 200cc intake runners don't match the intake.. is that right?

Thanks, you lot are the best

------------------
  • 89 Formula 305 WS6
    SFC's,
    LCA's,
    Air foil
    Flowmaster cat back
    Tranny Cooler
  • 90 Eagle Talon 2.0
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Old 01-19-2001, 11:02 AM   #2
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help?
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Old 01-19-2001, 02:58 PM   #3
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You could use the L98 heads, but they would serve you better if they were ported and maybe with larger valves. At the cost of doing all that, new heads look really good pricewise. Tom Keliher has the Sportsman II heads on his car, dont recall him saying anything about the ports not lining up. You can see his car in just about any magazine, its a light blue Formula.
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Old 01-19-2001, 02:58 PM
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Reload this Page L98 heads for 383
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