cam ideas guys???

[mainermikeyd]

Just bought a all original 86 350 with 66k original miles for my Big 10 project truck, still has all the original emmissions hoses an pumps, going to tear all that stuff off this weekend, put some headers on it, I'm looking for what you guys are running on similar trucks?? Has a 700r4 with a 208, an I'm gonna be running 35's on not sure on gears yet but I'm guessin either 3.42 or 3.73's

[camshaftgsxr]

it would be best to post this in the engines and drivetrain forum, also some more specs on your motor would help others recommend good parts.

[von guido]

look into comp cams high energy line. They are great for offroad,towing and general daily drivers. They have a tight lobe seperation and not as much duration. They give you ALOT of low down torque so if ya off idle power, than this is the setup for ya

[68GMCCustom]

the 383 I just sold has an old Melling MTC-1 cam and makes great power down low and continues to make power on up to 5k plus.
Its a 278/288 cam with 204/214 @ .050 dur, .420/.443 lift, 107/117 C/L.

[thirdstreettito]

Personally I'd put in a mutha thumpr, the sound is just awesome.

YouTube- Chevy 350 with Mutha Thumpr cam

[nbpro]

summitracing has the Melling MTC-1 Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 278/288, Lift .420/.443, Chevy, Small Block, Kit 129.95

[68GMCCustom]

Thats a steal...but the MTC-1 is no "Thumper"...just a better then stock, torquey, cam. It makes good power, even tho the lift is a little small.

[von guido]

Originally Posted by 68GMCCustom

Thats a steal...but the MTC-1 is no "Thumper"...just a better then stock, torquey, cam. It makes good power, even tho the lift is a little small.

thumpr cams are for posers..I have taken at least 10 of them out for customers. Lunati's voodoo cams and Ultradyne are the best off the shelf grinds out there. I run a voodoo 60204 in my 454 and have better idle response,vaccum and power curve than the big mutha thumpr that was in it. Not to mention an extra 21hp and 19 ft lbs of torque at the fly. Granted my gains are partially due to my engine setup.

[jasonroman]

more info on cams please.
im interested, but dont know enuff about em...
i have a 85 with a 350
nothing else done....yet.
want to change intake and carb.
thought might be a good time to have cam thrown in too......
im no mechanic, so i will have to pay for labor...how much should i expect to pay

no trying to jack tread, just looking for info also.

[von guido]

Originally Posted by jasonroman

more info on cams please.
im interested, but dont know enuff about em...
i have a 85 with a 350
nothing else done....yet.
want to change intake and carb.
thought might be a good time to have cam thrown in too......
im no mechanic, so i will have to pay for labor...how much should i expect to pay

no trying to jack tread, just looking for info also.

it all depends on what you want to do with your truck and what gears, converter and compression. On a stock/semi stock motor always go conservative with your cam choice and dont get suckered in to believing that bigger means more power.

[nbpro]

engines and drivetrain forum
http://67-72chevytrucks.com/vboard/f...splay.php?f=24

[jrcaprai]

For what you are doing... 3.73 Gears with 35" Tires, your going to want a torquey Cam
Comp Cams has their XE 4x4 Cams made for 4x4's... Can't get much more specific than that

http://www.summitracing.com/parts/CCA-12-239-3/
http://www.summitracing.com/parts/CCA-12-243-3/

[LiveAnimals]

I recommend the Comp 268H, its a mild cam for a mild set-up. If you're not going to do much to the engine this will work just fine for you. Please don't over cam it.

[olblue81]

Agree on checking out the engine forum here.

But I'll throw my $0.02 in here. With stock heads definitely go on the conservative side. Stock heads typically don't flow much more from .500" lift and above so avoid a cam with more lift than that. Larger duration will make the cam sound better at idle, but you have to rev it higher for the cam to work. From my experience a larger cam will make more power than a smaller one, but it's gets boring waiting for the motor to "come up on the cam". For example, the 350/327 cam I have doesn't really start to pull till 27-2800 rpm. With the stock heads it is wound out by 5200- that's a pretty small window really. I'd prefer something that started pulling about 500 lower and I have a 2wd so no 35s to try and spin.

Newer cam designs are much better than what I have, but it does reference my point. Comp Cams do make a neat FREE engine simulator that will help you select your cam.

[von guido]

Originally Posted by olblue81

Agree on checking out the engine forum here.

But I'll throw my $0.02 in here. With stock heads definitely go on the conservative side. Stock heads typically don't flow much more from .500" lift and above so avoid a cam with more lift than that. Larger duration will make the cam sound better at idle, but you have to rev it higher for the cam to work. From my experience a larger cam will make more power than a smaller one, but it's gets boring waiting for the motor to "come up on the cam". For example, the 350/327 cam I have doesn't really start to pull till 27-2800 rpm. With the stock heads it is wound out by 5200- that's a pretty small window really. I'd prefer something that started pulling about 500 lower and I have a 2wd so no 35s to try and spin.

Newer cam designs are much better than what I have, but it does reference my point. Comp Cams do make a neat FREE engine simulator that will help you select your cam.

you have the right idea.... stock sbc valvesprings will only handle up to .480 lift. Go bigger and you have to worry about breaking a spring,piston to valve clearance alongside a sluggish motor. I would not put a "268" cam in a 4x4 because the rpm band. I would recommend like someone else said, a 4x4 specific cam or a comp high energy cam.

[68GMCCustom]

that 268H is even a little bigger cam then the one I mentioned.