Wich Cam? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

r0lf- · 03-17-2003, 11:22 PM

Im really torn on wich cam to shove into my project 350.

Either the Comp cam...

260H High Energy .440 lift

or the

268H High Energy .454 lift.

This is going to be on a basically stock '80 350, it will have a Performer Intake and carb with EGR and some Edelbrock Headers. But other than that, no head work or anything. I want some really strong torque and a mean, but workable idle. The motor has 80,000 miles on it, but it wasnt abused.

**swervin ervin** · 03-17-2003, 11:47 PM

I would go with the XE line from Comp. They are specifically designed to make torque, while still providing upper rpm power. The fast ramp speeds are what does it. With stock heads and converter, I would go with something like the XE256H or XE262H. A EGR likes a cam with dual patterns. Single pattern cams will have more lope though. Their 4X4 cams are nice too for torque.

It's tough to have really strong torque and a mean, but workable ide without some good heads. For all this, the engine needs to be able to breath. Something stock heads lack real bad.

Remember, biggest thing you can do to kill torque on a stock engine is overcam it.

r0lf- · 03-18-2003, 12:01 AM

yup, I know all about overcamming. All my buds know nothing about how an engine really works and they want to put .500 lift cams on their stock engines. They think they will have a hotrod on their hands.

I was looking into some vortec heads, but I dont know of any good EGR manifolds that are cheap to use with them. Ill look into those cams though. Thanks.

r0lf- · 03-18-2003, 12:12 AM

Wow. I took a look at the XE256 and I really like the numbers on it. Power range is from 1000-5200, I really like the torque down low. I have to run a bunch of vaccum for EGR and emissions, so this might be a winner.

I could even use my stock converter with this badboy.

The only question is, Is it CA emissions legal? Well... I guess thats not the big question. They arent going to pull my cam at the smog check place, will it pass smog?

**swervin ervin** · 03-18-2003, 01:01 AM

Quote:

Originally posted by r0lf-
The only question is, Is it CA emissions legal? Well... I guess thats not the big question. They arent going to pull my cam at the smog check place, will it pass smog?

In a word, no. None of the XE series cams are smog legal, but what the hey. I have the XE268H in my truck, with Edelbrock heads, etc., and pass sniffer tests real easy. I know out here we have nowhere near the stringent tests you do, but I would think it should be easy to pass with the XE256.

You are right, I doubt they will pull your cam and mike it.

84Stepper · 03-18-2003, 03:46 AM

I have the xe268h in my truck and I love it. You will be happy with either the xe256 or the xe268h. I also agree with getting the heads for the power, because with out them your not going to have the power you want. Man it sure is nice living in Oklahoma, since we don't have to go through all of those dang inspections.

Tom · 03-18-2003, 11:57 AM

Two things. 1: the XE line of cams are not 100,000mile cams. The ramp rates are way too fast to last that long. 2: single pattern cams make more torque down low then split pattern cams. Id give ultradyne a call and talk to harold. Or shoot him a mesage on www.chevelles.com
This guy knows his stuff!

Senor_paco · 03-22-2003, 04:20 AM

I use the Crane Cams 272 Extreme energy cam, and it made a HUGE diff over stock. Of course now I have to get a looser converter and lower my 3.07 "freeway flyer" gears, but if I have to do it, so be it. I have a 4.11 locker, but that may be too much without a 700r4 tranny.

03-17-2003, 11:22 PM	#1
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	Wich Cam? Im really torn on wich cam to shove into my project 350. Either the Comp cam... 260H High Energy .440 lift or the 268H High Energy .454 lift. This is going to be on a basically stock '80 350, it will have a Performer Intake and carb with EGR and some Edelbrock Headers. But other than that, no head work or anything. I want some really strong torque and a mean, but workable idle. The motor has 80,000 miles on it, but it wasnt abused.

03-17-2003, 11:47 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	I would go with the XE line from Comp. They are specifically designed to make torque, while still providing upper rpm power. The fast ramp speeds are what does it. With stock heads and converter, I would go with something like the XE256H or XE262H. A EGR likes a cam with dual patterns. Single pattern cams will have more lope though. Their 4X4 cams are nice too for torque. It's tough to have really strong torque and a mean, but workable ide without some good heads. For all this, the engine needs to be able to breath. Something stock heads lack real bad. Remember, biggest thing you can do to kill torque on a stock engine is overcam it. __________________ Mike 1985 Chevy C-10

03-18-2003, 12:12 AM	#4
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	Wow. I took a look at the XE256 and I really like the numbers on it. Power range is from 1000-5200, I really like the torque down low. I have to run a bunch of vaccum for EGR and emissions, so this might be a winner. I could even use my stock converter with this badboy. The only question is, Is it CA emissions legal? Well... I guess thats not the big question. They arent going to pull my cam at the smog check place, will it pass smog? Last edited by r0lf-; 03-18-2003 at 12:16 AM.

03-18-2003, 03:46 AM	#6
84Stepper Registered User Join Date: Feb 2003 Location: Edmond, Oklahoma Posts: 425	I have the xe268h in my truck and I love it. You will be happy with either the xe256 or the xe268h. I also agree with getting the heads for the power, because with out them your not going to have the power you want. Man it sure is nice living in Oklahoma, since we don't have to go through all of those dang inspections. __________________ 84 Chevy Stepside, 350, TH350, 268h Comp cam, Hooker headers, MSD Pro Billet, Edelbrock Performer manifold and 1604 carb, 40 Series Flowmasters dumped, and Western Chassis 3/5 drop w/ c notch. New 3:73 Eaton Posi

03-18-2003, 11:57 AM	#7
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,712	Two things. 1: the XE line of cams are not 100,000mile cams. The ramp rates are way too fast to last that long. 2: single pattern cams make more torque down low then split pattern cams. Id give ultradyne a call and talk to harold. Or shoot him a mesage on www.chevelles.com This guy knows his stuff! __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

03-18-2003, 12:01 AM	#3
r0lf- Hotwheels? Join Date: Dec 2002 Location: Pleasant Hill, CA Posts: 1,145	yup, I know all about overcamming. All my buds know nothing about how an engine really works and they want to put .500 lift cams on their stock engines. They think they will have a hotrod on their hands. I was looking into some vortec heads, but I dont know of any good EGR manifolds that are cheap to use with them. Ill look into those cams though. Thanks.

03-22-2003, 04:20 AM	#8
Senor_paco Registered User Join Date: Mar 2003 Location: San Antonio, TX Posts: 441	I use the Crane Cams 272 Extreme energy cam, and it made a HUGE diff over stock. Of course now I have to get a looser converter and lower my 3.07 "freeway flyer" gears, but if I have to do it, so be it. I have a 4.11 locker, but that may be too much without a 700r4 tranny.



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