badasschevy123

Im fixing to do a heads cam package. Im getting dart platinums 195cc and i want to run a h292 comp magnum cam. now the question is...

1) How much will this effect my power disc brakes? ( i have a vacuum reserve canister)
2) should i go with a different cc on the heads

The stunningman

iTrader: (47)

depends on how much vacuum your engine makes in the end. A lower compression motor with that cam would have very little vacuum. A stout higher compression engine would have more to work with.

badasschevy123

With the 65cc heads im getting i should be around 9.5:1 would this be alright?

The stunningman

iTrader: (47)

You are going to have very little vacuum with that camshaft and a lopey idle. Do you already have that cam or are you open to suggestions for better cams?

To answer your question though... yes it will work with the canister.

badasschevy123

i dont have the cam yet and im open to suggestions ( heads and cam)

badasschevy123

but if i wanted to the vaccum canister will help out right? but how much will it be effective?

ajensen383

If you are open to suggestions, may I ask what size engine you are using? What it is intended for (street, strip etc..)..What you want out of it as far as performance/streetability etc.. To answer your original question alot would depend on size of engine for vacuum. A 406 with the comp 292 cam will provide more vacuum than a 327 will, simply because the larger displacement will "absorb" alot of the overlap.. In my '70 Nova w a 383 11.25:1, I am running a soild Crower 244/250 @.050 with a 105 LSA. I have not had alot of power brake issues at all and I do not have a canister. If i really started jamming on the brakes alot, you could tell that i was running low on vacuum , but for everyday normal driving, i have not had a problem.

For what its worth, I would not use the comp 292, or any of the other Magnum grinds, as they are a 20 year old design. You can get a Comp XE cam or a Voodoo cam from Lunati, and make alot more power...If you want to run a large duration cam, and do more racing I would go with a solid lifter version hands down..Hydraulic lifter cams don't make as much power in an engine spinning 6500rpm.

Good luck with whatever you chose to do.

badasschevy123

Im running a sbc 350 with edelbrock air gap intake, 750 holley dp, dart platinum heads 65cc, 3000 stall 700r tranny with a transgo shift kit, and 4.10 eaton posi carrier. it a 67 camaro not sure of the weight. but its gonna be a street strip car.

ajensen383

Ok knowing that, i would recommend using Comp XE-268 or XE-274...the 268 specs out at 224/230 @.050 .477"/.480", while the 274 specs out at 230/236 @.050 and .490/.490 lift...

Or Lunati Voodoo 60103- 227/233 .489/.504 or 60104 233/241 .504/.525

In my 74 Nova with the 350(similiar to yours) i am using a cam similar to the XE 268...It is a great streep/strip cam that has a nice lopey idle without being too aggressive and works great with power brakes. It pulls hard to 6200 or so and is ablast to drive... great for everyday driving and will pull high 12's in the 1/4 with a th350 and 4.10's

If it was my engine i was building i would probably go with the Voodoo 60103..slightly bigger than the comp and has more lift...


Jeff

cncbird

iTrader: (3)

i would probably use the comp xe-268 for a 350 or a 274 for a 383 stroker

Ryan02SS

iTrader: (3)

If your staying flat tappet I would go with the Lunati Voodoo 60103- 227/233 .489/.504, it should provide everything your looking for.

The stunningman

iTrader: (47)

I would go with an xtreme274 for this set-up. You have way to much 1st gear 3.08 trans 1st.... 3000 converter and 4.10's are gonna be swinging sideways out the gate IMO.

SG94Z

he is not shitin you that thing is going to go through first gear faster than you can shift it