what kind of gains could be expected from porting stock LT1 heads?
03-12-2005, 03:15 AM
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what kind of gains could be expected from porting stock LT1 heads? a friend of mine has a 96 Z28 with longtubes, true duals, throttle body and a cai. a local shop quoted him 500 bucks to port his stock heads and we have heard the guy does badass head work. with a decent cam and his current mods, what kind of gains could be had with ported heads? thanks for any info.
03-12-2005, 08:18 AM
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Originally Posted by mulletwearingtadrive
a friend of mine has a 96 Z28 with longtubes, true duals, throttle body and a cai. a local shop quoted him 500 bucks to port his stock heads and we have heard the guy does badass head work. with a decent cam and his current mods, what kind of gains could be had with ported heads? thanks for any info.
03-13-2005, 03:50 AM
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Well, I gained exactly 41 RWhp with a set of GTP Stage 2 heads, I already had a HOT cam installed. BUT, I increased my compression about 1 full point at the same time. The compression increase was probably good for 10-15 HP, so the ported heads were worth 25-30 rwwhp.
03-14-2005, 05:11 AM
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Originally Posted by mulletwearingtadrive
what kind of gains could be had with ported heads?
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03-14-2005, 01:31 PM
#8
Get your heads ported, and the intake ported. Get LE3 heads and a LE2 cam and you'll be at 400 hp no doubt. Also get your intake ported to match the flow and you'll be all set. The heads/cam will work better with:
30 or 36# injectors
3.73 or higher gears
3200+ stall
LT's
no cats
GOOD tuning
30 or 36# injectors
3.73 or higher gears
3200+ stall
LT's
no cats
GOOD tuning
03-14-2005, 02:52 PM
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What about valve increase? I have a friend at a local performance shop who is a machinist. I can get all the work done for close to nothing so I planned on a port/polish 2.02 int./1.60 exh. 
