Mrbanados

14101128 aluminum heads(58cc)
Edelbrock rpm cam and intake
Roller tip rockers (1.6)
Flat top pistons

Right now I have the edelbrock performer cam and intake with 76cc 14079261 heads
What power will I make?

mmadden55

Ignition system? ECU?

Mrbanados

Msd streetfire dist. No ecu it's already carbed

Sorry for the quick post, I'll put up more info in a sec.

I know there are better cams, but this was free.

Mrbanados

Bump

Mrbanados

Anyone?

Mrbanados

Got the rpm cam for free, the aluminum heads for 150, and the rpm intake for 50. Just want to make sure these heads are good for the cam.

zraffz

You aren't giving us enough details. How about lift & duration of the cam and a little information about your motor.

Mrbanados

480/510 lift

234/244

skinny z

Everthing will hinge on your compression ratio.
With 58 cc heads, flat top pistons, an undecked block and a .040" head gasket you'll be up around 10.3:1. It may take a cam larger than the one you have so the engine doesn't develop too much cylinder pressure and you run into detonation issues.
If your engine has a dished piston, say 18cc, then your compression ratio will fall in around the 9.8:1 range. Then the cam you have will be a little on the large side and you'll end up with a mismatched and underperforming combination.
More details are needed.
Full cam specs including LSA and ICL.
Piston type. If you know the origin of the engine or can find out what it's from originally, then you may be able to take an educated guess at the piston type. How far the piston are below the deck will need to physically mesaured.
These items are essential is determining the compatability of the parts you've collected.

Mrbanados

The block is from an 86 truck I believe, it has already been rebuilt before I got it. Cam has 112 lobe separation, and a 107 intake centerline. Piston type I wouldn't know until I take off the heads again but from what I remember they are flat tops.

skinny z

Do you have the advertised duration numbers for that cam? They're needed to calculate you running or dynamic compression.

90camaro355rs

need more info

Mrbanados

234/244@.50

Orr89RocZ

iTrader: (20)

I'd guess 30-35 hp over what you had given comp increase and cam/heads. That cam kinda sucks tho.

skinny z

Those are duration numbers at .050". It's the advertised duration values that are needed to work through the running compresson calculations.
EDIT:
I did a search and found the cam specs on-line.
308/318 adv duration w/ 112 LSA/107 ICL.
Without all the information needed the calculations aren't gong to be the most accurate but I think you'll find the cam you have isn't going to perform very well with the rest of your combination.
The dynamic or running compression works out to 7:1. That's working with the limited information available. Considering that a strong street engine will give you satisfying results with a DCR in the 7.5 - 8.5:1 range, you'll produce very little cylinder pressure and as a consequence, very little low engine speed torque. The rest would just unravel from there. Once you build enough engine RPM, the heads probably run out of flow seeing as they're factory heads and unless they're ported (extensively) you'll never realize the full potential of the cam. Besides that, the cam grind isn't the best by some standards when compared to what's out there.
I'll qualify that by stating this is all theoretical and other factors besides DCR weigh in on the engine's potential output. That said, it appears to be a mismatch to me.
I've worked out the compression values based on the following.
Bore/stroke: 4.00 x 3.48
Head cc: 58
Gasket: .040 x 4.100
Piston/head clearence: .025
Piston volume: 6 cc
those numbers crank out a static compression ratio of 10.2:1.
The cam is question would work much better with a SCR of about 11:1. Even then the DCR only appoaches 7.5:1.
11:1 would require a decked block so as to get the piston/head clearence to .040. Then the heads milled to get the chamber volume to around 56 cc. This is assuming that there are flat top pistons with a valve releif volume of 6 cc and the rest of the block hasn't been changed too far from stock.

1gary

You got all this "stuff" and now are in a hurry for advise.Yep,Hindsight is 20/20.

Mrbanados

I didn't get it yet, the cam was free, it's brand new. The heads and intake are on craigslist and I was trying to see if it was good for the motor I have now. All I know about it is what's listed in my Sig.

I have a 350 block in my yard that's going to get a 383 stroker kit. Just wanted to see if I could get some more hp out of the motor that's already in the car to keep me happy till I start the 383. What set of heads would be good for the cam? I'll try and see what pistons I have when I take the heads off. I know the heads are 76cc truck heads. The motor in it has loads of torque but loses top end around 4800. Should be taking it to a dyno soon to see where I'm at so I'll know where I want to be.