GM Performance Heads
Thread Starter
Teching In
Joined: Jan 2008
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GM Performance Heads --------------------------------------------------------------------------------
Has anybody tried or had any experience with GM perfamance LS6 cnc
ported head P/N 88958622
How do they compare to AFR's 205,s looking for any input
Has anybody tried or had any experience with GM perfamance LS6 cnc
ported head P/N 88958622
How do they compare to AFR's 205,s looking for any input
Launching!
Joined: Apr 2008
Posts: 231
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I've looked at both of these heads and am wondering the same thing.
I think I can get a good deal on the GMPP heads . . .
I believe the GMPP LS6 heads (ported by lpe) are actually 244cc on the intake runner.
Much bigger than the AFR 205s but some here have had good results with the GMPP heads and small/medium cams so go figure . . .
I think I can get a good deal on the GMPP heads . . .
I believe the GMPP LS6 heads (ported by lpe) are actually 244cc on the intake runner.
Much bigger than the AFR 205s but some here have had good results with the GMPP heads and small/medium cams so go figure . . .
TECH Fanatic
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From: Orange Park/ Jacksonville, FL
I have some sitting @ the house waiting to go on very soon. I decided on these heads because they are supposed to be the best match for my GMPP ASA cam (226/236 .525 110lsa).
Here are the flow #'s I was given
Lift......Int.....Ex
.200....150....117
.300....225....168
.400....273....202
.450....285....210
.500....291....217
.550....304....221
.600....311....222
Here are the flow #'s I was given
Lift......Int.....Ex
.200....150....117
.300....225....168
.400....273....202
.450....285....210
.500....291....217
.550....304....221
.600....311....222
Launching!
Joined: Apr 2008
Posts: 231
Likes: 0
I have some sitting @ the house waiting to go on very soon. I decided on these heads because they are supposed to be the best match for my GMPP ASA cam (226/236 .525 110lsa).
Here are the flow #'s I was given
Lift......Int.....Ex
.200....150....117
.300....225....168
.400....273....202
.450....285....210
.500....291....217
.550....304....221
.600....311....222
Here are the flow #'s I was given
Lift......Int.....Ex
.200....150....117
.300....225....168
.400....273....202
.450....285....210
.500....291....217
.550....304....221
.600....311....222
Keep us posted on the results.
Thread Starter
Teching In
Joined: Jan 2008
Posts: 2
Likes: 0
I decided to go with the AFRs they were about the same cost as the GMPP, but have smaller cc intake runners. I already have MTI LS1 R2 heads with large intake runners
A Thunder racing cheater cam, LGM long tubes pros. I need more lower midrange power to 6000rpm. more than top end. I use the car for HPDE track days on a road race corse.
Thank you the for input
A Thunder racing cheater cam, LGM long tubes pros. I need more lower midrange power to 6000rpm. more than top end. I use the car for HPDE track days on a road race corse.
Thank you the for input
Be sure to check our newly revised LS6 heads too!
https://ls1tech.com/forums/generation-iv-internal-engine/943839-prc-ls6-ls2-heads-get-face-lift-225cc-runners.html
For the difference in cost, you can buy a FAST 92/92 combo and be well ahead in power over the GM CNC'd heads! Let us know if we can help with your combo. We'd be happy to earn your business!
https://ls1tech.com/forums/generation-iv-internal-engine/943839-prc-ls6-ls2-heads-get-face-lift-225cc-runners.html
For the difference in cost, you can buy a FAST 92/92 combo and be well ahead in power over the GM CNC'd heads! Let us know if we can help with your combo. We'd be happy to earn your business!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
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TECH Fanatic
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From: Orange Park/ Jacksonville, FL
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