Stage II LS1 flow #s
Thread Starter
Joined: Aug 2004
Posts: 422
Likes: 1
From: Newport News, VA
Stage II LS1 flow #s These are FFHP Stage II LS1 (853 casting) heads with 2.02" intake and 1.60" exhaust valves. Here are the results from an SF-600 bench:
Lift / Intake / Exhaust
.050 / 34.5 / 24.9
.100 / 63.0 / 57.0
.150 / 95.2 / 86.2
.200 / 128.3 / 108.8
.250 / 159.0 / 126.8
.300 / 189.9 / 146.1
.350 / 219.2 / 162.7
.400 / 244.6 / 172.8
.450 / 264.7 / 182.0
.500 / 282.3 / 186.4
.550 / 294.0 / 191.3
.600 / 303.0 / 194.9
.650 / 290.0 / 194.6
.700 / 288.5 / 195.0
I will also be installing a Cheatr cam with the following specs:
.006 duration
Intake - 266.9
Exhaust - 290.0
Centerline - 114.8
LSA - 116
With a 68cc chamber volume, my Cheatr cam, and a stock MLS gasket, this gives me 10.25:1 static and 7.94 dynamic compression. I was hoping for a little more DCR. Will I be selling myself short with this setup? I know I could have the heads milled or use thinner gaskets instead of stock. Which one is the best choice?
Lift / Intake / Exhaust
.050 / 34.5 / 24.9
.100 / 63.0 / 57.0
.150 / 95.2 / 86.2
.200 / 128.3 / 108.8
.250 / 159.0 / 126.8
.300 / 189.9 / 146.1
.350 / 219.2 / 162.7
.400 / 244.6 / 172.8
.450 / 264.7 / 182.0
.500 / 282.3 / 186.4
.550 / 294.0 / 191.3
.600 / 303.0 / 194.9
.650 / 290.0 / 194.6
.700 / 288.5 / 195.0
I will also be installing a Cheatr cam with the following specs:
.006 duration
Intake - 266.9
Exhaust - 290.0
Centerline - 114.8
LSA - 116
With a 68cc chamber volume, my Cheatr cam, and a stock MLS gasket, this gives me 10.25:1 static and 7.94 dynamic compression. I was hoping for a little more DCR. Will I be selling myself short with this setup? I know I could have the heads milled or use thinner gaskets instead of stock. Which one is the best choice?
