Looking for a magnum manifold

[HOTRODJOHN]

I am going to put an EFI unit on my 64 and am looking for a 1966 Magnum Manifold to convert to a 4BBL and use an aftermarket EFI fuel injection unit. I will be doing a follow along on this project. Thanks, John

[Ed Snyder]

I am going to put an EFI unit on my 64 and am looking for a 1966 Magnum Manifold to convert to a 4BBL and use an aftermarket EFI fuel injection unit. I will be doing a follow along on this project. Thanks, John

To take full advantage of the magnum intake manifold, John, you really need the magnum heads and magnum exhaust manifolds to go along with it. They all have larger ports than the non-magnum components.

We'd love to follow along on your EFI project! Good luck with it.

[TJ's GMC]

You going with the Holley Fi tech?

What size engine?

[HOTRODJOHN]

I am going to use a FiTech unit. I became a dealer for them and have installed several units and they are very simple to install and get running.I really need to get a manifold now. John

[bigblockv6]

John, when you get the injection going let us all know how it works out, I will most likely be interested in a FiTech for my 478. Which unit would you recommend for my 478 which presently has ported and polished heads and a performance grind cam:helpsign:

[HOTRODJOHN]

The one we would use is the go street style. You feed in your information into the programmer start it up and let it idle for a while and then drive it for about 40 miles to set the computer and your done, You do need to have about 40 to 55 lbs of fuel pressure and that's it. If you know anyone who has a manifold please let me know. Also, what type of cam did you use and did it make a big difference. Rhanks

[bigblockv6]

The cam is a custom grind specific for the larger cubic inch V6 engines with bigger heads. As far as difference the 478M was fully rebuilt with the cam and I used it to replace the 305E in my 68 pickup, it should have a considerable power increase over a stock 478M. If I can dig up the cam specs from my computer files I will send them to you.

[HOTRODJOHN]

Thanks I appreciate it, do you know the approx. horsepower now. Also, do you know who re-ground the cam.

[bigblockv6]

The Cam was ground by a local cam grinder in Hayward California who is no longer in business, I have the specs so you can have just about any cam grinder do it for you. There are several other members I've given the specs to that are running this grind in their bigger V6 engines.

[atomman]

As an FYI, I had 3 cams ground for the V-12's by Oregon Cam Grinding, http://www.oregoncamshaft.com/. Does superior work. Infact, found a 702 cam on the shelf there.
Atomman
Dan

[HOTRODJOHN]

Thanks, I will give him a call. John

[Firepower]

The cam is a custom grind specific for the larger cubic inch V6 engines with bigger heads. As far as difference the 478M was fully rebuilt with the cam and I used it to replace the 305E in my 68 pickup, it should have a considerable power increase over a stock 478M. If I can dig up the cam specs from my computer files I will send them to you.

Would you be willing to share the specs? I was planning to send mine to Delta, when I do my RD450 (532ci) inline. Much worse paired intakes and way undersquare. It'll be fun to see how they compare.

Did you happen to measure/degree it before the regrind?

Did you measure combustion chamber volume?

How about pin to top of piston?

Piston to deck of block?

I'm a big believer in squish, and it seems a lost opportunity with the dished pistons.

Thanks!

[bigblockv6]

[QUOTE=Firepower;68036]Would you be willing to share the specs? I was planning to send mine to Delta, when I do my RD450 (532ci) inline. Much worse paired intakes and way undersquare. It'll be fun to see how they compare.

Did you happen to measure/degree it before the regrind?

Did you measure combustion chamber volume?

How about pin to top of piston?

Piston to deck of block?

I'm a big believer in squish, and it seems a lost opportunity with the dished pistons.

These questions that you're asking me were pretty much between the machine shop that did all the machine work on my engine and the custom cam grinder, I did assemble the short block though. Longer valve springs were used since the cam has considerably more lift. The valve springs actually are for a 390 Ford. Since the cam sets on the same centerline it's not necessary to degree it. I'll get the specs out this weekend along with the part number for the valve springs.