Decision: EFI + Better heads or EFI + Pro Charger on BBC
 

I currently have a 402 (bored 396) BBC that is practically new. It is well put together with forged crank, H beam rods, 9.5:1 JE pistons. It also has a a Comp roller cam (just under 600 lift). It is balanced, etc..

It has stock oval port heads with roller rockers with Edelbrock Performaer intake and a 780 holley.

I want to up the horsepower, reliability, etc.. My plan was to upgrade to a set of CNC ported AFR oval port heads and go with a Accel DFI setup.

Now I am wondering if I should just bite the bullet and go with a Pro Charger + EFI. If I do this, do I need to upgrade the heads. If I do this plus upgrade the heads will there be a big additional advantage. Is my compression reasonable to use the Pro-Charger in the first place? What kind of horsepower and tork could I reasonably expect to get out of this motor with these options. Would I be better off selling the 402 and going with a much larger BBC?

I would welcome any and all opinions on this loaded topic :bow:

Thanks,
-Tracy

Just my .02 cents -
I would start by going with the ProCharger unit for your present motor. The oval port BBC heads outflow most other GM division hp heads. You are also running a fairly large cam, so the blower will overcome any shortcomings you may think you have unless you plan on running the motor at high rpm. You could get a D1-SC or even an F-1 (same external dimensions) and get quite the bang for your buck. Also, you could get a blow-thru carb for now and switch to EFI later to save some up front cost. There are quite a few people on this board that have used similar combinations and been very successful.

There is a combination similar to yours on the ProCharger website that is listed at 648hp.

Bruce, you can field my tech calls on Procharging. That was the perfect answer.

Bruce,

Thanks for the excellent advice. I think I will start with the simple route you suggest.

I could not find the listing you spoke of on ProCharger. Can you give me a pointer?

Thanks,
-Tracy

Call Frank at Prodigy
 

I believe he is a dealer for them

Thanks Frank.

Tracy, Frank is a dealer for ProCharger so give him a call.

Here is the link to a similar setup:
http://procharger.com/gallery/showte...ket=3&idx=1107

my 02 cents skip any belt driven blower and go with the bigger motor alot less problems, keep it simple you will have alot less problems. unless you go with turbo"s