Need help matching cam to these heads............Cam guru's please come inside
11-30-2006, 04:55 PM
#1
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Need help matching cam to these heads............Cam guru's please come inside These are my cuurent heads and cam specs. I'm making around 400-410rwhp with this setup and bolton's. I want a bigger cam, because I'm spraying and when I got this setup there weren't near the cams available that there are today.
LS1 Heads:
Manley stainless steel 2.020" intake/1.575" exhaust valves feature a high-performance multi-angle valve job.
Milled 63.5cc combustion chambers raise compression ratio to 10.7:1.
Heads are assembled with all new hardware, including:
SLP Titanium Valve-Spring Retainers
SLP High-Performance Valve Springs
GM valve seals and keepers
Cam:
228/228 Duration
.571/.571 Lift
112 degree lobe seperation
I want to put a bigger cam in the car, but I'm worried about the cam making the valves hit the pistons. I've tossed around the idea of flycutting, but would rather not deal with it.
Can you guys recommend a good powerful cam for me with the information I provided?
BTW, I don't care about drivability or anything. My car is strictly a toy and all I do is drag race it with the occasional drive to work!
LS1 Heads:
Manley stainless steel 2.020" intake/1.575" exhaust valves feature a high-performance multi-angle valve job.
Milled 63.5cc combustion chambers raise compression ratio to 10.7:1.
Heads are assembled with all new hardware, including:
SLP Titanium Valve-Spring Retainers
SLP High-Performance Valve Springs
GM valve seals and keepers
Cam:
228/228 Duration
.571/.571 Lift
112 degree lobe seperation
I want to put a bigger cam in the car, but I'm worried about the cam making the valves hit the pistons. I've tossed around the idea of flycutting, but would rather not deal with it.
Can you guys recommend a good powerful cam for me with the information I provided?
BTW, I don't care about drivability or anything. My car is strictly a toy and all I do is drag race it with the occasional drive to work!
12-01-2006, 12:09 PM
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Originally Posted by Sigforty
Futral f13 or f14 should work without issuses. I with am running the f14 on 2.02 valves with around 11.3 cr.
12-01-2006, 01:07 PM
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I have a custom grind cam that is working very well in my cousin's 'vette'. It has so far made 458 rwhp NA on a stock bottom end 346.
Adv. duration is 302/302
@0.050 is 234/234
.578" lift int/exh
112* LSA
108* Int centerline
We are running this cam with a 2.08" intake valve without haveing to flycut the piston's. The cost is $300 plus shipping for the cam.
Adv. duration is 302/302
@0.050 is 234/234
.578" lift int/exh
112* LSA
108* Int centerline
We are running this cam with a 2.08" intake valve without haveing to flycut the piston's. The cost is $300 plus shipping for the cam.
12-01-2006, 01:15 PM
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Originally Posted by 1997bird
I have a custom grind cam that is working very well in my cousin's 'vette'. It has so far made 458 rwhp NA on a stock bottom end 346.
Adv. duration is 302/302
@0.050 is 234/234
.578" lift int/exh
112* LSA
108* Int centerline
We are running this cam with a 2.08" intake valve without haveing to flycut the piston's. The cost is $300 plus shipping for the cam.
Adv. duration is 302/302
@0.050 is 234/234
.578" lift int/exh
112* LSA
108* Int centerline
We are running this cam with a 2.08" intake valve without haveing to flycut the piston's. The cost is $300 plus shipping for the cam.
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12-01-2006, 01:56 PM
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Originally Posted by 1997bird
They are a set of RHS 225 cc int runner heads with a 62 cc combution chamber. You should be able to a .600" lift cam before clearanceing is maditory.
12-01-2006, 02:18 PM
#10
Lift has nothing to do with piston-to-valve clearance.
I'd recommend the F13 as well, but if you need to flycut, it takes about 20 mins. Not a big deal. If you need to flycut, might as well go for something like a G5X3 or maybe even bigger like the MS4.
I'd recommend the F13 as well, but if you need to flycut, it takes about 20 mins. Not a big deal. If you need to flycut, might as well go for something like a G5X3 or maybe even bigger like the MS4.
12-01-2006, 02:33 PM
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Originally Posted by JakeFusion™
Lift has nothing to do with piston-to-valve clearance.
12-01-2006, 03:08 PM
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Originally Posted by JakeFusion™
Lift has nothing to do with piston-to-valve clearance.
I'd recommend the F13 as well, but if you need to flycut, it takes about 20 mins. Not a big deal. If you need to flycut, might as well go for something like a G5X3 or maybe even bigger like the MS4.
I'd recommend the F13 as well, but if you need to flycut, it takes about 20 mins. Not a big deal. If you need to flycut, might as well go for something like a G5X3 or maybe even bigger like the MS4.
About 20 minutes?
I think that's WAY to optimistic of a time estimate.Ben T.
12-01-2006, 03:09 PM
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Originally Posted by 1997bird
You are right there is more to clearanceing than just lift, but lift is still a factor. With the cam that I gave for an example, there is pleanty of clearance even with the cam 4* advanced. Sorry if I gave the wrong impression to those out there in this thread.
Ben T.
12-01-2006, 05:04 PM
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how about something like the t3=lsk lobes on the intake,xer on exhaust.i think duration is around 231/234 and lift around .64x/.598. may not even have to flycut.a set of good dual springs and you should be good to go.or the t2 which is 232/234 on xer lobes. i agree with above f13 or f14 are sweet proven cams also.
12-01-2006, 05:30 PM
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Originally Posted by Studytime
What many thousandths on the intake/exhaust sides?
Ben T.
Ben T.
