i was wanting to know how big of cams you guys are running in your small block chevys hyd, solid ,or roller in a street /strip cars , thanks
I ran a Comp XE262 in a 305. It was 218/224 @ .50 IIRC. It idled Mean and put the '85 camaro it was in into the high 13's. I also got 25 mpg on the freeway, but it was an EFI car so...
I had a stock L-79 grind (327CID/350 HP) hydraulic flat-tappet cam in my 350-powered '55 Chevy. Specs were 221 degrees @ 050/0.447" lift/114 degrees LSA. It was backed by a Muncie 4-speed and a 3.55:1 geared rear. With a 625 cfm Carter carb, Eddy Performer intake, Camel-hump heads and block-hugger headers, it was VERY torquey and made an excellent street package, but ran out of breath after 5500 RPM.
i run the comp 292 hydraulic. 358c.i. backed by a 4 speed. super nasty idle, and works good to 7000rpm.
got a ULTRADYNE in the 55. ( intake lift:.540 exhaust lift .556) (duration at .050 is intake 255 exhaust 263) cam has a 102 centerline and is solid lifter
ok...here goes... The S10's 350 has a L79 cam in it. Specs are listed above. The turbo motor in the Camaro has a small cam - a generic 214/224 at 50, 447/460 lift job with a 112 lobe sep, installed 5 degrees advanced. In the old 406 I was running I had the old standby, the Comp Magnum 306S and 1.6 lifters. 260 duration at 50 on a 11:1 motor, nearly .600 lift with the 1.6's. Made 600hp on pump gas.
Comp XR276HR (.500/.510 Lift ) hydraulic roller in a 383 with AFR 190 heads. Goes like hell to 5800 rpm, then dies big time BUT..getting to 5800 is QUICK!
I've used about 20 268 extreme energy Comp cams in customers and my own engines. It's slightly CONSERVATIVE by some estimations, but when you consider that two most made mistakes in car crafting is over camming and over carburating it's a GOOD thing to be a little conservative. By Comp Cams own estimation the 268 grind is their most versatile cam. That speaks volumns, or should, to the inexperienced engine builder who is about to make one of the most important decisions about his new engine. Frank
I'm Running An Engle Custom Grind .654 In. Intake .614 In. Exhaust. @ 261 .50 In. On A 350 Ci. 12 To 1 Compression. On Pump Gas.
I'll second this opinion,any day.So many people over cam,and lose the bottom end power,by bleeding off cylinder pressure,where they need it most.
I think it depends on how you drive and gearing. I have a pretty big cam (hydro roller, .510/.520 lift) in my 350, with 4.10's and M21 CR, and I love the top end pull. Mild cams and bottom end is great and all unless your racing. I shift at 7000 rpm, and even if you get me off the line my car will pull really hard in the upper end. I have beat numorous people at the strip by walking away in top gear when there big block runs out of steam. This is with a fairly matched car mind you. not saying it beats anything, mine runs low 12's at about 110mph... It really depends on a lot of things, traction, trans, weight of car and what your trying to do. But I went from a fairly mild cam (stock ZZ4 cam) directly to this lumpy one and it just made my car come alive above 3K.
Tudor - '67 stock-appearing Elky with Torquethrusts. Engine was built by DW's head engine guy when we worked together, is backed by Richmond 5-speed and 9" 3.25 posi. Good for suprising punks in 5.0 Mustangs Currently undergoing interior makeover. vic
Give me the specs on the motor your thinking of building & I'll run them through my dyno program. My suggestion is if you want big power from a sbc get good alum heads, but it come down to how much you can spend. The more info you give me I can get really close to actual power level you can expect.
The coupe has a .488 lift 292 advertised duration grind in it and 1.6 ratio rockers so whatever that comes out being sounds good and will keep about a car between my buddy's high 11second Chevelle and me from a 60 punch never have tried a dig with him!
i went old school 60s for the 406 in my galaxie the cam is a holman-moody HA-B solid lifter .526 lift and .290 duration.
Here is the cam that is going in my sbc 383... I have dish HP KB pistons with World Sportsman 2 heads that should put me at 9.3 to 1 compression. I have a weiand stealth intake port matched to the heads. I have a holley 3310 780CFM carb I have a pertronix flamethrower HEI I have a Ford 8.8 rear with 3.73 posi and 700R4 ****** with 2800 stall. I will be running headers with gl***packs. I am curious how the setup will do. Should be a torque monster but fall flat after 5k rpm if I had to guess. Should be a lot of fun though. any thoughts on how this setup will run?
I had a similar cam in my 406 sbc (Isky 270 mega-cam, .465 lift, 221 duration at .050). It had ported Sportsman II's, 10:1 compression, Edelbrock RPM intake, 3310 Holley, 1 5/8 long tube headers and an HEI. It was a great combination - loped a bit at idle and would pull to 6500 in first gear no problem. Plenty of torque as well. I had it in a couple of different cars - in a '39 Ford pickup with a 3.7 9 inch it ran 12.99 at about 105 mph. I also had it in a '61 Biscayne with 3.23 gears and it ran a 14.3 with a very soft launch to preserve the original rear end.
In my 64 skylark 2 door hard top, street/strip car I run a 383 sbc,with a .525/.525 cam,525HP,557turque,10.7:1
My Stude has a 355 SBC with a Comp XE274 hydraulic flat tappet, Has a bumpity idle and pulls great. I know lots of folks advise using small cams for great low end torque, streetability, etc., but I am traditional with my skinny bias plys. I don't want lots of low end to burn them up; a larger cam lets me get off the line without a lot of tire smoke (or going to that gawdawful pro-stock look) and then pulls hard up to the redline. I've got a better set of heads that will go on later this year and I'm thinking of a solid roller or solid flat tappet to go with them. All the cars I had when I was young in the early sixties (flatheads, y-blocks, Mopar /6's and polys) all had solids to adjust....love the sound and don't mind checking valve adjustment (which usually stays consistent if there are no valvetrain problems). just my 2 cents.
Gang - I must have the biggest one possible. The guy I bought it from told me it was a "full race" grind. (-:
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