GT40 3bar heads

Yes. Welcome.

Thank you. My stock heads must be rebuilt so for the money I guess GT40's make sense. I also need a new can and to bore .030 over. Any suggestions on cam?

Linky:

Heads

Hotrod Mag Test

brentdekeyser wrote: I also need a new cam Any suggestions on cam?

Brent,
What happened to the original cam? Was it by chance run on oil without ZDDP?

I too would like to welcome you to CCfan. Fill us in on the new to you 83. Are the stringers ok? We'd love to see pictures as well.

brentdekeyser wrote: Thank you. My stock heads must be rebuilt so for the money I guess GT40's make sense. I also need a new can and to bore .030 over. Any suggestions on cam?

Here's some info from Duane in Indy copied from a post he made today so it's fresh info

The subject came up on CC site a week or so ago about RR camshaft availability . I just spoke with Comp Cams tech staff and they have reverse rotation blanks in stock for firing order 1,8,4,5,6,2,7,3. Flat tappet hydraulic cam can be custom ground to your needed specs. They quoted me $247 delivered price. 3-5 day service

Are you in Lakewood Colorado?

OK-- failed at link. Sorry!

http://www.hotrod.com/how-to/engine/hrdp-9812-ford-351w-small-block-with-efi/

you're really racking up the forum points today Mr. Eader.

you're really racking up the forum points today Mr. Eader.

Yes, online auctions from a big customer today== lots of sitting, waiting, furious bidding, sitting waiting.... I hate this stuff. At least CC keeps me company!

Dang. I copied and pasted the hyperlink between the two sets of parenthesis. What am I doing wrong?

Thanks for the right link Seb. It worked for me this time.

tryathlete wrote: You folks know a lot more about these things than I do, but I remember reading about a stroker 351W, that developed 400HP on 87 octane at 5000 RPM-- and immediately thought-- well-- why not apply this to our increased power cravings. [http://www.hotrod.com/how-to/engine/hrdp-9812-ford-351w-small-block-with-efi/] note: first attempt at linking properly--

Interesting read but unfortunately, apples and oranges to a marine GT40.
1) Lack of O2 sensors cause closed loop programming (or is it open loop??? I always get that confused)
2) Flat tappet cam, vs. hydraulic roller
3) Wet exhaust manifolds vs. dry headers
4) No aftermarket chip upgrade available

Moral of the story is simple. The marine GT40 is about as good as you're going to get in factory trim. They did a good job getting what they could out of it. You take the afore mentioned restrictions into consideration and that engine in the article will be doing damn good to get the 315-320HP that PCM gets out of it.
The biggest issue is that with no aftermarket chips to tune it, you're pretty much screwed. Some here have experimented with completely new aftermarket programmable EFI systems like Megasquirt but its an expensive option and not for the faint of heart. You better know what you're doing or be prepared to keep throwing pistons into it until you get it right.

So you want more HP????? Get rid of your vaunted GT40 and build a motor the old fashioned way. Put a carb on top of it so it looks like a real motor and you 'll run circles around that GT40.
Of course you could always upgrade to a new 409, 450 or even a 550 if you have the income to do so. While I'm not that familiar with any of them I do know that it's already been proven by more than one person here that a carbed motor can be built that would challenge any of those engines. While certainly not a cheap endeavor in itself, I'm sure it would still be a fraction of what you'll spend on one of them.