Cam selection
4th Gear Member
Joined: Feb 2006
Posts: 1,538
From: So. Cal,the O.C.
RE: Cam selection
ORIGINAL: daver
ya im actually lookin at that same cam, do you think we would have to run hardened pushrods?? Ive heard yes and no.
ya im actually lookin at that same cam, do you think we would have to run hardened pushrods?? Ive heard yes and no.
Thread Starter
5th Gear Member
Joined: Dec 2005
Posts: 2,634
From: SC
RE: Cam selection
My heads from Edelbrock came with guide plates so, I'm set.
ORIGINAL: Iskwezm
you NEED hardened pushrods when you have guide plates,so so much for roller rockers. I got mine ported and had to install springs seats because the "stock" ones that come on the Edelbrocks were getting eaten but the springs.Also changed the springs because they were no where near the specs they claimed and would float way to easy.With flat top piston, 1 missed shift would end up with a few bent valves.
ORIGINAL: daver
ya im actually lookin at that same cam, do you think we would have to run hardened pushrods?? Ive heard yes and no.
ya im actually lookin at that same cam, do you think we would have to run hardened pushrods?? Ive heard yes and no.
4th Gear Member
Joined: Feb 2006
Posts: 1,538
From: So. Cal,the O.C.
RE: Cam selection
ORIGINAL: daver
What were your heads like?? im doing a 302 this winter and i wanna know some good affordable combos. Please IM me and give me some info as i am interested about your setup.
I used the RPM for a few years, it was a good cam, but remember, if your bolting on the heads, they have a 60cc chamber, so your gonna lose compression.I actually lost a bit of HP when i put them on. I was making 305 RWHP with stock heads,Comp 270 cam. I put on the RPM heads and cam and went down to about 230 HP, same manifold and carb.
prepped 750 CFM flowed to 830 cfm for blower
ported Vic Jr manifold
264*(320* adv).601 lift 108 LS Isky solid cam
stroked to 349 cid
Mahle forged pistons with 18cc reliefs
4340 rods
4340 crank
ported RPM heads with tripple springs,titanuim locks/retainers
Paxton SN2000 7-8 psi.
2nd Gear Member
Joined: Aug 2005
Posts: 385
From:
RE: Cam selection
Slickman, i may have found a cam that might be better for your application. Its from comp cams and its in their specialty cams section.
Specs
268/276 int/exh duration
.494/.494 int/exh
The kicker is that it is available in either a 108, 110, and a 114 degrees lobe seperation.
I think you would be very happy with that cam with a 114 degree lobe seperation angle. With those heads and the rest of your set up your torque curve would be flat as a board. Your car would be alot of fun on the street.
Specs
268/276 int/exh duration
.494/.494 int/exh
The kicker is that it is available in either a 108, 110, and a 114 degrees lobe seperation.
I think you would be very happy with that cam with a 114 degree lobe seperation angle. With those heads and the rest of your set up your torque curve would be flat as a board. Your car would be alot of fun on the street.
Thread Starter
5th Gear Member
Joined: Dec 2005
Posts: 2,634
From: SC
RE: Cam selection
ORIGINAL: daver
Slickman, i may have found a cam that might be better for your application. Its from comp cams and its in their specialty cams section.
Specs
268/276 int/exh duration
.494/.494 int/exh
The kicker is that it is available in either a 108, 110, and a 114 degrees lobe seperation.
I think you would be very happy with that cam with a 114 degree lobe seperation angle. With those heads and the rest of your set up your torque curve would be flat as a board. Your car would be alot of fun on the street.
Slickman, i may have found a cam that might be better for your application. Its from comp cams and its in their specialty cams section.
Specs
268/276 int/exh duration
.494/.494 int/exh
The kicker is that it is available in either a 108, 110, and a 114 degrees lobe seperation.
I think you would be very happy with that cam with a 114 degree lobe seperation angle. With those heads and the rest of your set up your torque curve would be flat as a board. Your car would be alot of fun on the street.
2nd Gear Member
Joined: Jun 2005
Posts: 419
From: Arizona
RE: Cam selection
ORIGINAL: Iskwezm
I used the RPM for a few years, it was a good cam, but remember, if your bolting on the heads, they have a 60cc chamber, so your gonna lose compression.I actually lost a bit of HP when i put them on. I was making 305 RWHP with stock heads,Comp 270 cam. I put on the RPM heads and cam and went down to about 230 HP, same manifold and carb.
I used the RPM for a few years, it was a good cam, but remember, if your bolting on the heads, they have a 60cc chamber, so your gonna lose compression.I actually lost a bit of HP when i put them on. I was making 305 RWHP with stock heads,Comp 270 cam. I put on the RPM heads and cam and went down to about 230 HP, same manifold and carb.
Thread Starter
5th Gear Member
Joined: Dec 2005
Posts: 2,634
From: SC
RE: Cam selection
Found it.. cam #31-442-4 Grind# 268AH-14 and Summit can get them.... So, you think this would give me a better TQ curve, nice lope, street friendly and about 18HG of vacuum?
ORIGINAL: daver
Slickman, i may have found a cam that might be better for your application. Its from comp cams and its in their specialty cams section.
Specs
268/276 int/exh duration
.494/.494 int/exh
The kicker is that it is available in either a 108, 110, and a 114 degrees lobe seperation.
I think you would be very happy with that cam with a 114 degree lobe seperation angle. With those heads and the rest of your set up your torque curve would be flat as a board. Your car would be alot of fun on the street.
Slickman, i may have found a cam that might be better for your application. Its from comp cams and its in their specialty cams section.
Specs
268/276 int/exh duration
.494/.494 int/exh
The kicker is that it is available in either a 108, 110, and a 114 degrees lobe seperation.
I think you would be very happy with that cam with a 114 degree lobe seperation angle. With those heads and the rest of your set up your torque curve would be flat as a board. Your car would be alot of fun on the street.
Thread Starter
5th Gear Member
Joined: Dec 2005
Posts: 2,634
From: SC
RE: Cam selection
Never heard that!! If that was the case, alum heads would not be so in demand I think..
ORIGINAL: KBunny
I have also read that the absorption rate of heat in aluminum compared to iron causes you to loose power as well... having to run at a higher comp ratio to gain that power back....
I have also read that the absorption rate of heat in aluminum compared to iron causes you to loose power as well... having to run at a higher comp ratio to gain that power back....