comparing 3 cams
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From: BAY AREA AND LOS ANGELES
comparing 3 cams Comp 305 220/230 .510/.510
Comp XE 224/230 .502/.510
Comp XE 230/236 .510/.520
1. how much power will these have with all bolt ons, stock heads.
2. how much power will these have with all bolt ons, and LE heads
4. where is the peak power
5. can the 305 be on a 112lope. everywhere sells it on a 114
car is a 95z 6 speed and all cams will be on a 112lope
Comp XE 224/230 .502/.510
Comp XE 230/236 .510/.520
1. how much power will these have with all bolt ons, stock heads.
2. how much power will these have with all bolt ons, and LE heads
4. where is the peak power
5. can the 305 be on a 112lope. everywhere sells it on a 114
car is a 95z 6 speed and all cams will be on a 112lope
If you're wanting an exact lobe separation angle like 112 and can't find it try http://www.cmotorsports.com/engine/l...ft-design.html. They don't have exactly 220/230 with 112 LSA, but they're close on a few cams. Seems to me that they have one of the larger listings of LT1 camshafts. They'll also custom grind a cam for you, if needed.
There are tons of variables to figure how much power these cams will produce. Let's assume that you're getting all new valvetrain as well, which you'll have to with those kind of lifts:
I'd say probably 40-50 hp gain with the 305 and XE 224/230, maybe 5-10 more with the 230/236. The 224/230 and 305 should have effective power ranges of 2000-5000 rpm, whereas the 230/236 is leaning more toward 2200-5200 rpm. Somebody will have to help me with peak power, I don't know; probably occurs somewhere 4800-5200 rpm?
There are tons of variables to figure how much power these cams will produce. Let's assume that you're getting all new valvetrain as well, which you'll have to with those kind of lifts:
I'd say probably 40-50 hp gain with the 305 and XE 224/230, maybe 5-10 more with the 230/236. The 224/230 and 305 should have effective power ranges of 2000-5000 rpm, whereas the 230/236 is leaning more toward 2200-5200 rpm. Somebody will have to help me with peak power, I don't know; probably occurs somewhere 4800-5200 rpm?
I had the XE230/236 .544/.556 (1.6 r's) 114 LSA. I had it custom ground by comp cam. I ordered it thru thunderracing.
With home ported stock heads and a mailorder tune I made 351rwhp/340rwtq with a low 11 A/F. i then added LE ported heads and LT's and made 368rwhp/336rwtq with an A/F well below 10:1. It took two full turns of the regulator to see the A/F start to come off of 10:1. After manually leaning it out to 12.4 ish, the final numbers were 383rwhp/353rwtq. That was done with the regulator to simulate an A/F change. I never got to play with timing. Attached is the graph. Pretty flat tq curve.
With home ported stock heads and a mailorder tune I made 351rwhp/340rwtq with a low 11 A/F. i then added LE ported heads and LT's and made 368rwhp/336rwtq with an A/F well below 10:1. It took two full turns of the regulator to see the A/F start to come off of 10:1. After manually leaning it out to 12.4 ish, the final numbers were 383rwhp/353rwtq. That was done with the regulator to simulate an A/F change. I never got to play with timing. Attached is the graph. Pretty flat tq curve.
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From: BAY AREA AND LOS ANGELES
y did u go with 114. what would having it on a 112 do? i like ur graph. maybe ill get this cam. for now it will be on stock heads, then later ill get the LE heads. Which ones did you go with?
Originally Posted by SSRZ28
y did u go with 114. what would having it on a 112 do? i like ur graph. maybe ill get this cam. for now it will be on stock heads, then later ill get the LE heads. Which ones did you go with?
The heads were 2 year old LE heads with 2.00/1.56 valves (comprable to his LE2 heads now).
