horsepower question
Thread Starter
Teching In
Joined: Jan 2004
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horsepower question hey ive got a 355 LT4 in my formula M6 and ive got the following mods:
bored .030" over ,ported intake manifold,comp cams lt1 306 cam,1.6rr,port and polished heads,sealed power pistons,tuning from pcmforless.com,mid length headers,y-pipe,cut-out,flowmaster 2-chamber,lt4 knock module,k&n intake,MAF, tbody bypass, air foil,crank and alternator pulleys,resonator delete, almost all the free mods there are.
i was just wondering if anyone has an idea of how much power i might be lookin at. i talked to a racing company near me and was told 360rwhp at the most yet im seeing guys here with a lot of the same stuff are getting over 400rwhp. so if anyone has an idea thanks.
bored .030" over ,ported intake manifold,comp cams lt1 306 cam,1.6rr,port and polished heads,sealed power pistons,tuning from pcmforless.com,mid length headers,y-pipe,cut-out,flowmaster 2-chamber,lt4 knock module,k&n intake,MAF, tbody bypass, air foil,crank and alternator pulleys,resonator delete, almost all the free mods there are.
i was just wondering if anyone has an idea of how much power i might be lookin at. i talked to a racing company near me and was told 360rwhp at the most yet im seeing guys here with a lot of the same stuff are getting over 400rwhp. so if anyone has an idea thanks.
Last edited by 94355LT4; Jan 18, 2004 at 03:39 PM.
Depending on how well your heads flow, the port velocity you have in the heads and your compression is what's gonna determine most of that. If the heads are ported real good you could see about 400 (with a gooood tune). If they are stock then prolly about 360 or so. That's just an educated guess.
I agree with Super Mario, take it and get it dynoed and you will know for sure. That way you can see exactly what the car is doing and make adjustments from there to get more power.
I agree with Super Mario, take it and get it dynoed and you will know for sure. That way you can see exactly what the car is doing and make adjustments from there to get more power.
Thread Starter
Teching In
Joined: Jan 2004
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the heads were put on the cnc machine at my machinists, i dont know what the specs are on them, all i know is they were bigger the intake ports matched my intake manifold and they were polished smooth as glass.
Originally Posted by 94355LT4
the heads were put on the cnc machine at my machinists, i dont know what the specs are on them, all i know is they were bigger the intake ports matched my intake manifold and they were polished smooth as glass.
Scott
TECH Resident
Joined: Jun 2002
Posts: 943
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From: Houston
should put out more than 360. i have a 96 6-spd, ported heads and intake, 224/230 cam, midlengths, y-pipe, cutout(after the cat),etc, and put down 360 after both collector gaskets blew on the dyno and a plug wire melted on the header.
