which cam to pick? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

crm318 · 10-20-2007, 05:14 PM

i have been questioning my cam decision lately. if you look at my specs in my signature, you see what parts im using and cam: a .454/.454 218/218 268h. the motor runs great, but i think it would be more well suited for a camaro. i think that this cam might have a little too much duration for my heavy truck with 3.07 gears. at full throttle from a stop, it will roast em and shoot to 6000rpms, but from a roll, it seems a little slugish and then gets into its power band. what do you guys think of the .440/.440 212/212 cam. speed wise, do you think it would be better for my truck and gear setup or is the cam i have now just fine?

crm318 · 10-20-2007, 09:13 PM

bump

streetstar · 10-20-2007, 10:06 PM

I think a 3/4 race cam would be better-------

but seriously -- do you have enough stall speed in your converter? the 3.07's are also pretty weak for that setup. 3.73's and a 2200 rpm stall converter would be better .

If you want to change the cam instead to a milder one, maybe someone on here has some experience with the rv cams

scatesracing · 10-21-2007, 12:43 AM

what do you call a roll???? 10 20 50 mph..... with your gears you could ajust your throttle pressure so it will kick down in to first when you stand on it .... get it to tight it will not want to shift unless u lift a little... if the thing is bad about stacking shifts that might be something to look at................... (and put a holley on it) just playn )

10-20-2007, 05:14 PM	#1
crm318 Alright Alright Alright Join Date: Mar 2004 Location: Midland, Texas Posts: 1,672	which cam to pick? i have been questioning my cam decision lately. if you look at my specs in my signature, you see what parts im using and cam: a .454/.454 218/218 268h. the motor runs great, but i think it would be more well suited for a camaro. i think that this cam might have a little too much duration for my heavy truck with 3.07 gears. at full throttle from a stop, it will roast em and shoot to 6000rpms, but from a roll, it seems a little slugish and then gets into its power band. what do you guys think of the .440/.440 212/212 cam. speed wise, do you think it would be better for my truck and gear setup or is the cam i have now just fine? __________________ 1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies

10-20-2007, 09:13 PM	#2
crm318 Alright Alright Alright Join Date: Mar 2004 Location: Midland, Texas Posts: 1,672	Re: which cam to pick? bump __________________ 1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies

10-20-2007, 10:06 PM	#3
streetstar Registered User Join Date: May 2007 Location: Moore, Oklahoma Posts: 2,396	Re: which cam to pick? I think a 3/4 race cam would be better------- but seriously -- do you have enough stall speed in your converter? the 3.07's are also pretty weak for that setup. 3.73's and a 2200 rpm stall converter would be better . If you want to change the cam instead to a milder one, maybe someone on here has some experience with the rv cams Last edited by streetstar; 10-20-2007 at 10:21 PM.

10-21-2007, 12:43 AM	#4
scatesracing Machinist Join Date: Sep 2007 Location: Derby Kansas Posts: 296	Re: which cam to pick? what do you call a roll???? 10 20 50 mph..... with your gears you could ajust your throttle pressure so it will kick down in to first when you stand on it .... get it to tight it will not want to shift unless u lift a little... if the thing is bad about stacking shifts that might be something to look at................... (and put a holley on it) just playn )



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