335 HP 396 290 Head Casting Build & Dyno Test

[HP HUNTER]

Originally Posted by Glenn Briglio

Flow test should be done with correct bore size or you could be getting incorrect data.

I will agree, but I'm just looking to see the gain, I will not buy a bore sleeve and top plate for this small bore project. I've been very impressed with your qualifying, great work!

[Dwight Southerland]

Did you pour the intake and exhaust ports for volume?

[HP HUNTER]

Originally Posted by Dwight Southerland

Did you pour the intake and exhaust ports for volume?

Not yet, but I certainly will pour them, when I'am done the intakes will pour less than they do now. I will not be doing any porting, and they were not ported previously.

[Adger Smith]

Mark,
since I'm not well informed about the stocker combinatons...
What year and body does the 335 HP 396 fit?
I found the small cam 1969 335 HP 427 in Dwights class tool section

[HP HUNTER]

Originally Posted by Adger Smith

Mark,
since I'm not well informed about the stocker combinatons...
What year and body does the 335 HP 396 fit?
I found the small cam 1969 335 HP 427 in Dwights class tool section

I believe its been factored down to 330 HP with an automatic, 1968 Nova, Camaro, Chevelle SS From GM 350 HP 396 .460/.480 lift. 335 HP 427 is .398 lift I believe.

[Adger Smith]

OK, Mark...that works.
I was looking for a GM rating of 335..& should have looked at 350 HP specs.
Yes, 335 is the rating for the 1968 350 HP 396 with stick shift.
What I think I saw is all bodies with stick in 1968 for stock are 335. (Base)
I see it has the bigger cam, too.
That Dog might hunt with a stick.
Thanks for the info...
Adger

[HP HUNTER]

Originally Posted by Adger Smith

OK, Mark...that works.
I was looking for a GM rating of 335..& should have looked at 350 HP specs.
Yes, 335 is the rating for the 1968 350 HP 396 with stick shift.
What I think I saw is all bodies with stick in 1968 for stock are 335. (Base)
I see it has the bigger cam, too.
That Dog might hunt with a stick.
Thanks for the info...
Adger

When are you coming to visit?

[Paul Precht]

I'm guessing you didn't flow with the manifold on.

[HP HUNTER]

Originally Posted by Paul Precht

I'm guessing you didn't flow with the manifold on.

You would be correct, I simply wanted a base line on the heads as they were run. The 396 was a 440 HP engine as run, I know the factory intake easily supports more than that from other builds I've done in the past. I would be interested in knowing what a worked over intake was worth? I'am pretty sure the heads can be very much improved on, we're going to see soon.

https://classracer.com/classforum/sh...ad.php?t=78477

[HP HUNTER]

Done and ready to dyno.