Has anyone used the Gm Hot cam in there small block. I'm concerned about reversion with stock exhaust manifolds. It has Corsa captians call with side exhaust in a 1987 Wellcraft 222 Elite.
Cam specs;
Hot Camshaft (P/N 24502586 Specifications
Intake Exhaust
Lobe Lift 0.328” 0.328”

Valve Lift
@ 1.5 ratio
@ 1.6 ratio 0.492”
0.535” 0.492”
0.525”

Duration
@0.006 cam lift 272° 281°
@0.050 cam lift 210° 228°

Lobe Centerline 109° 115°

Lobe Separation 112°
Thanks, Jeff

I'm thinking some of the specs you listed are wrong. The GM Hyd Roller SBC Hot Cam is 218/228 @ .050" not 210/228.

As to reversion on stock manifolds? More than likely you will have a little. There are alot of factors that contribute to reversion. The CC might hurt or it might help having the longer side exhaust vs straight out the back.

I ran a modified Comp XM276HR a few years back in a 355 SBC. It was a 226/230 .537/.511 112+2. I had a very small amount of reversion in the center runners of the exhaust manifolds. I am running FastGlass Stainless risers. I had to weld on 16" inner extensions to prevent reversion.

Now on my 385ci with a 234/240 .580/.568 112+4 I have 22" extensions where the water does not mix until in the tip.

You are correct about the specs. I got them from Gilbert Chevrolet web site. Thinking of going with Comp 08-416-8 marine cam. 212/218 .488/.495. Or getting a set of revolution marine manifolds.
Thanks for the reply

Take a look at the Comp XM270HR 218/224 .495/.503? 112+2LSA Comp says it's the largest you can run with stock ex manifolds. It should run a little better than what you have listed above.