View Poll Results: Which Camshaft for Supercharging
226/234-117lsa 0.598"/0.599" lift Good idle, more streetable
9
52.94%
248/256-114lsa 0.600"/0.610" lift Lopey idle, more power
4
23.53%
A different camshaft that might be better
4
23.53%
Voters: 17. You may not vote on this poll
Camshaft for Supercharging Poll
03-19-2006, 11:56 AM
#1
Camshaft for Supercharging Poll I have a CompCams 226/234-117 0.598"/0.599" lift camshaft now for my F1-R supercharged 402 buildup. I am thinking getting more radical by going with a CompCams 248/256-114 0.600"/0.610" lift camshaft. With the first cam, the idle will be decent while the second will be lopey. This is going in an M6 car. So I would like to see some votes on which camshaft and if you feel like it say why you picked it. If you chose other, please state what camshaft you recommend and why.
03-19-2006, 12:43 PM
#4
LS1Tech Co-Founder
iTrader: (34)
Hmmm...
Well I made 735rwhp with my YSi, 230/236 cam, and 17 psi thru a T400. I currently have made 754rwhp with YSi, 236/246, and 21.5 psi. I made peak at like 6600.
That 2nd cam sounds pretty big.
Chris Mays at Comp once suggested a 240/248 and I was thinking it was too big, but it's similar to the 236/246 that I ended up doing.
I don't think you need to go into 250 duration to make 700rwhp with an M6.
Well I made 735rwhp with my YSi, 230/236 cam, and 17 psi thru a T400. I currently have made 754rwhp with YSi, 236/246, and 21.5 psi. I made peak at like 6600.
That 2nd cam sounds pretty big.
Chris Mays at Comp once suggested a 240/248 and I was thinking it was too big, but it's similar to the 236/246 that I ended up doing.
I don't think you need to go into 250 duration to make 700rwhp with an M6.
03-19-2006, 01:02 PM
#5
700 is the minimum I would like to see. 800 would be nice. 900 would be cool. 1000WHP will be F****ING AWESOME. Mind you that would be on race gas, but 800whp on pump again would be nice. Do you think the small cam I already have can hit the 800 mark?
03-20-2006, 12:49 PM
#7
ok, someone a while ago gave me some pulley sizes on 400+cid engines. I am looking at a 3.7" supercharger pulley with a 7.25" crank pulley. They said that combo should get me about 15psi of boost. My engine will run about 9.25:1 CR with Patriot Stage 2 LS6 heads. Do you think I can hit my goal of 800whp with this combo and streetable camshaft, or should I go alittle bigger?
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03-20-2006, 05:48 PM
#8
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Originally Posted by Pro Stock John
Hmmm...
Well I made 735rwhp with my YSi, 230/236 cam, and 17 psi thru a T400. I currently have made 754rwhp with YSi, 236/246, and 21.5 psi. I made peak at like 6600.
.
Well I made 735rwhp with my YSi, 230/236 cam, and 17 psi thru a T400. I currently have made 754rwhp with YSi, 236/246, and 21.5 psi. I made peak at like 6600.
.
03-20-2006, 10:26 PM
#10
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I voted for a different cam. The cam u listed with 226/234 117 has a -4 overlap. I would go with 230/236 same lift on 116-117LSA which will bring u down to a -1 to 1 overlap. That should be enough to eliminate any boost lost and also still keep a wider powerband and driveablility on the 402.
03-21-2006, 12:11 PM
#11
Originally Posted by LSs1Power
I voted for a different cam. The cam u listed with 226/234 117 has a -4 overlap. I would go with 230/236 same lift on 116-117LSA which will bring u down to a -1 to 1 overlap. That should be enough to eliminate any boost lost and also still keep a wider powerband and driveablility on the 402.
03-21-2006, 04:34 PM
#14
LS1Tech Co-Founder
iTrader: (34)
If the logic that pervades this section was always true, then folks would run zo6 cams in race cars because they make the most peak power. And that is not the case. In fact with race cars they will run a ton more duration than we even get to... A ton of overlap is not ideal, but they are trying to make so much power that the loss from the additional overlap is less than the increase in power from the added duration.
