chevyrules85

so i have a 350 with about 9.5 to one compression that i recently built for my car (85 camaro) and i have camel hump heads with some pocket porting done with 1.94 1.5 valves with a performer cam and intake and a performer 750 carb in front of a turbo 350 trans and the stock 10 bolt rear

first question is in the current configuration what kind of power do you guys think i would lay down to the wheels?

second question is, is there a cam that would help me get more out of this combo? i know the cam now is a bit small so is there a better option out there that would work better with my set-up? thanks guys

82Five-O

I'm running the same setup with a 12-238-2 comp cam. I love it. Check it out.

chevyrules85

anyone else? i know i need a bigger cam just dont know which one to go with? any ideas anyone?

kerplunk318

iTrader: (3)

This looks like an awesome compromise and should work with your stock valvetrain

what is the car gonna be used for?

Sonix

iTrader: (1)

Ok, so the cam in question is the XE262h.

You can probably step up to the xe274h with 9.5:1 CR - if and only if you have 9.5:1 or more CR. Do you have a larger stall speed on your convertor? You'll need it to get it to run very well.

Might want to look into a cam with a shorter LSA. Get more midrange torque out of the deal. ISKY makes some, comp makes a few, I think in their drag/circle track model lineups.

F-BIRD'88

What is the trans converter stall speed? What is the rear gear ratio?

Describe the exhaust system.

chevyrules85

stall is a 2000 stall, and with 3.42 gears, and going to have hedman long tubes with either 2.5 or 3in true duals

F-BIRD'88

A moderate but aggressive "street" solid lifter cam.
Comp Extreme series mechanical #12-676-4 XS268S
Needs 9.8:1+ cr and a reworked, aggressive spark advance curve.
Set the valve lash at .016" hot.

A slightly more powerfull "268 cam" than what the rest of the pack will be running.
Can use a 1.6:1 ratio intake rocker arm. Needs a good valve spring.
Call Comp cams about a beehive spring for this cam.
Roller cam power on a flat tappet budget.
This is the biggest I'd go with a stock converter.
Lil "Dragon Slayer" with a 3000 stall and 150hp Nos, yet tame enough for daily cruising.

chevyrules85

im actually leaning more towards the xe274h, and i have about a 2000 stall, so its not a stock converter, i know i have at least 9.5 of higher, prolly close to 10 to 1 really, think that cam would work well?

Sonix

iTrader: (1)

2000RPm stall is basically stock. Not enough for an xe274h, unless you like going toe to toe with civic DX's until you get above 4000RPM. And the nice soft leave, and no tire smoke -ever.

CR very rarely is higher than you expect. Unless you've measured and know for sure, i'd say it's closer to 9.3:1.

chevyrules85

so what about going down to the xe268h? would it be about right for what i have? also a friend of mine who's a very good mechanic recommended this cam for my combo, would it work well? 12-211-2 is the number, i think its like a 270h, i know its a comp magnum cam

Confuzed1

iTrader: (4)

If you have a decent exhaust, it'll be a great cam. From mid-range to upper RPM, my 400 ran great with it. I've gone retro-roller since then.

I happen to have the cam, the lifters indexed as to which lobe they rode on, the recommended Comp springs with less than 5K on everything...

Sonix

iTrader: (1)

The magnum 270h is an older grind, straight pattern.
Typical factory heads need more duration on the exhaust for the upper RPM potential.
The xe268h is a good cam, but a 2500RPM stall is highly recommended.
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haha, actually, since confuzed has started hawking his parts, I have the xe268h as well, with lifters indexed to their lobes, waiting to find a good home.

chevyrules85

ok, pm sent to both of you, and do you think that with either of these cams i would have power brake problems? that would be the only thing im running off vacuum other than the dist. or are those cams not big enough to have problems like that?

Sonix

iTrader: (1)

No, neither one should cause any problems with power brakes.
I didn't have any with my 268 at least. Confuzed's car would have ran about the same as mine, since he had more cubes to tame the cam.

I think an upgraded stall speed would be required to make the most of either. "They" say that the xe268h is the biggest you can use with a stock stall, but I have a stick shift, so I can't comment on that. Most members on here recommend a bigger stall speed.