Brian P Posted September 21, 2004 Report Share Posted September 21, 2004 The opening to the Vin M manifold TB opening is approx 58-60mm. When my friend put on his 62mm FDP throttle body, he didnt have to open it up much, took maybe 30 seconds with a big sander flapper wheel. Quote Link to comment Share on other sites More sharing options...
OldsmoBeast Posted September 21, 2004 Author Report Share Posted September 21, 2004 Okay...I have like $0....if you count my credit card, I have -$300 or something.... but the j/y I go to has an Alero with a 3400, guy says I can have the upper/lower manifolds with the fuel rail (even though I don't think I need it) for $100 Canadian....lets say that gets me 5hp...thats $20/hp....thats a pretty good deal right? the problem is how the fuck I would justify that....i guess I have to start selling some of my stuff...like this Motorola V70 I have lying around...anyone know how to unlock these bastards? YK Quote Link to comment Share on other sites More sharing options...
manitcor Posted September 21, 2004 Report Share Posted September 21, 2004 nahh if you do the uppers and lowers with the TB youll see better than 5hp I would wager. Further with a much better flowing top end the engine will respond better to other mods you do down the line. If you do the lower intake though you will need to replace the lower intake gasket as well. I dont think you need 3400 heads to put on the 3400 lower but Im not sure. Quote Link to comment Share on other sites More sharing options...
OldsmoBeast Posted September 21, 2004 Author Report Share Posted September 21, 2004 nahh if you do the uppers and lowers with the TB youll see better than 5hp I would wager. Further with a much better flowing top end the engine will respond better to other mods you do down the line. If you do the lower intake though you will need to replace the lower intake gasket as well. I dont think you need 3400 heads to put on the 3400 lower but Im not sure. IIRC, the '97+ 3100 got the 3400 heads and roller rockers too...so i think the heads would be the same. Quote Link to comment Share on other sites More sharing options...
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