Getting together parts - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kcabbie · 07-13-2011, 09:43 PM

Tomorrow i'm going to pick up a set of vortec heads, a performer intake manifold for the vortec heads, and a holly double pumper carb that has a new rebuild. (Has vacuum that kicks in the secondary?) I am considering putting in a cam since i'm going to have my radiator out(putting in a new 4 core) but i'm not sure it will be worth it. BTW, this is a 350 with a granny 4 speed and a dually with a welding rig on the back. HEAVY.
So i want bottom end.
What i'm hoping to get is some tips, i know i need vortec valve covers. Any info on the things i plan on getting? The intake already has a bit of a rise on it. Will the spacer plate from autozone make a difference?

Thanks ahead for any tips/advice!

kcabbie · 07-14-2011, 02:42 PM

bump..

Psycho71 · 07-14-2011, 09:16 PM

On the cam, call Comp Cam's tech line. They will consider your application, along with the specifics of your truck, and recommend a cam that will do what you want. be prepared with things like gear ratio, compression ratio, etc..

On a dual plane intake, like the performer, use a 4 hole spacer, not an open spacer. I put one on my the 350 in my burb, it seemed to help, but not enough to make a wild difference in power.

kcabbie · 07-14-2011, 10:25 PM

Thanks for the info! I'll do both of these.
This is the carb i bought. All it said is it had a recent rebuild and that it is a Holley double pumper. I think its a 650?

07-13-2011, 09:43 PM	#1
kcabbie Registered User Join Date: Jan 2011 Location: houston texas Posts: 64	Getting together parts Tomorrow i'm going to pick up a set of vortec heads, a performer intake manifold for the vortec heads, and a holly double pumper carb that has a new rebuild. (Has vacuum that kicks in the secondary?) I am considering putting in a cam since i'm going to have my radiator out(putting in a new 4 core) but i'm not sure it will be worth it. BTW, this is a 350 with a granny 4 speed and a dually with a welding rig on the back. HEAVY. So i want bottom end. What i'm hoping to get is some tips, i know i need vortec valve covers. Any info on the things i plan on getting? The intake already has a bit of a rise on it. Will the spacer plate from autozone make a difference? Thanks ahead for any tips/advice!

07-14-2011, 02:42 PM	#2
kcabbie Registered User Join Date: Jan 2011 Location: houston texas Posts: 64	Re: Getting together parts bump.. Last edited by kcabbie; 07-14-2011 at 02:53 PM.

07-14-2011, 09:16 PM	#3
Psycho71 Registered User Join Date: Jan 2006 Location: Kaufman, Tx Posts: 827	Re: Getting together parts On the cam, call Comp Cam's tech line. They will consider your application, along with the specifics of your truck, and recommend a cam that will do what you want. be prepared with things like gear ratio, compression ratio, etc.. On a dual plane intake, like the performer, use a 4 hole spacer, not an open spacer. I put one on my the 350 in my burb, it seemed to help, but not enough to make a wild difference in power. __________________ You only need two tools in life - WD-40 and Duct Tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape. If a hammer doesn't fix it, you have an electrical problem! Slot Cars, 1:24 Scale, 100MPH@100,000RPM, fastest things on wheels!

07-14-2011, 10:25 PM	#4
kcabbie Registered User Join Date: Jan 2011 Location: houston texas Posts: 64	Re: Getting together parts Thanks for the info! I'll do both of these. This is the carb i bought. All it said is it had a recent rebuild and that it is a Holley double pumper. I think its a 650? Attached Images



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