Hey,
What Cam could i get with around 220 @ 50 and about .500'' of lift? i could use 1.6 rockers, but im looking for a cam to give me maybe 425~ HP on my 350, i just ordered some Dart Pro1 aluminum heads, 202 / 160 and max lift is .500 but i think i can change it with different valve springs, i have 10.5 or so compression
thanks a lot
Adam

Need more Info:
1. weight of vehicle
2. Trans Type:
3. Stall
4. Size tires
5. Carb
6. Intake:

10.5:1 comp is alot of comp. to run that small of a cam without detonation, you may need to bleed some of that off.

Comp 224/224 (I think its .525") on a 110LS would make 425hp in a 350 if you build the
rest of the engine right. It should be alright with aluminum heads on pump gas, because
I have a 10.8:1 - 383 with a 224/224 hyd. roller on a 114LS and runs on pump gas.

sorry for lack of info, i wanna keep the duration down cuz i dont wanna use a stall

weight is around 3200
TH350
26'' tire
750 carb
Perf RPM intake

thanks


67RS502,
what is that cam called ? thanks

You might want to look at the Isky 270 Megacam. It's a 221 @ .050 with about .480" lift, and ground on 108 LSA. I installed this cam recently in my small block, and I really like it.

Its called:
Pick a lobe in the back of their catalog, and have it ground on the LS you want. :D
Also its a hyd. roller and has .567" lift. - fast ramp.
Custom cams - beats askin some stupid tech guy what would work graemlins/clonk.gif

How about this one:

Comp Cams 12-322-4 aka 276AH-10

276/284 adv.
228/236 @.050
.474/.474 lift with 1.5 rockers
.506/.506 lift with 1.6 rockers

thanks for the replies

What do you think about these cams?

215/215 .500 110LSA
or
224/224 .525 110LSA

my combo: 750DP, Perf RPM intake, Dart 200cc aluminum heads, and about 10.5 CR, TH350, adding a 2400~stall, headers, dual 40s
thanks
adam

The 2nd one sounds good, and you can always stick some 1.6 rockers on it later too.
Comp also makes a 218/224.

If you do not want to use a higher than stock stall converter you need to use a wider lobe separation angle with your compression. the wider lobe separation causes less overlap which helps low end power. It also causes a later IVO (intake valve close) timing which bleeds more cylinder pressure with less duration to help you run a smaller cam with more compression.

The Comp 280HR has 280* advertised duration, 224* duration @ .050 lift, and .525" lift on a 110* LSA. Your Dynamic compression ratio with this cam would be 8.37:1 which is about max for a street car and 93 octane gas IMO.

How did you arrive at a static compression ratio of "10.5:1 or so" ? Do you have domed pistons? The Dart Pro 1's have 64cc chambers and with a flat top piston the engine will make 10.0:1 static compression which would be perfect for an aluminum-head street engine with a 275-280 degree cam.

If you really do have over 10.5:1 copmpression I would look and see if you can get Comp to grind this cam on a 112 LSA (vs the standard 110* LSA)to help with low end AND reduce your dynamic compression ratio.

Eric my compression in my 350 with 5cc valve reliefs, 64 cc heads, and a .040 quench put me at 10.3:1.

what would 1.6 rockers do for that cam?

224/224 .525/.525 110LSA
if i get this one i will try to get it with 112LSA
thanks a lot
Adam

Virtually nothing from a duration standpoint. Going up one ratio is only worth 1-2 degrees of duration @ .050 tops.