Valvetrain

[Jeffruff]

Good morning folks, I am in the process of changing a few things including installing a Pro Flo 4 fuel injection system on my Rb 440, the engine is bored 40 thousandth and has 9.5 to one flat top TRW pistons. It has a Comp Cam Hydrolic Flat Tappet 21-670-4, which is 474 in and 474 exhaust, it has Comp lifters CCA-867-16 with Crane Roller Rockers. This motor did 445 hp on the dyno, 450 trq. @ 5500rpms when it fell on it's face. I have just purchased Edelbrock Performer heads and I'm wondering if the Cam I have is going to get me the best bang for my buck and also if my lifters and rockers should be changed to address the 5500 rpm thing, it's got a 2700-3000 stall 355 gears. Any info would be great as I'm ready to rip it apart. Thanx.

 

[Chryco Psycho]

Change the cam , There are far better cams than Comp for Mopars , Try a Lunati grind .
If you can return the heads I would do that also , for similar $$ or even less $$ there are better heads
I did a head swap for a friend , we went from Ported 452 Iron heads to Eddy performers also ported & gained a Whopping 3 RWHP on the dyno , spending over $2k for 3 hp has to be about the most expensive Hp you can buy ! Look at Trick Flow instead

 

[Jeffruff]

Thanks Chryco Psycho.

 

[Chryco Psycho]

If you want a budget head the 440 Source heads are 1/2 the price of the Eddy heads & are as good .
Trick Flow are 1 of the best heads available right now .
You are welcome , Glad to help .

 

[fasjac]

Change the cam , There are far better cams than Comp for Mopars , Try a Lunati grind .
If you can return the heads I would do that also , for similar $$ or even less $$ there are better heads
I did a head swap for a friend , we went from Ported 452 Iron heads to Eddy performers also ported & gained a Whopping 3 RWHP on the dyno , spending over $2k for 3 hp has to be about the most expensive Hp you can buy ! Look at Trick Flow instead

Trickflow heads are nice, my next build will include them.

 

[fasjac]

Trickflow heads are nice, my next build will include them.

I’m just collecting my parts now. No hurry but, I feel the urge to build more than 500ci stroker. Got these last week.

 

[Jonah Hex]

I’m just collecting my parts now. No hurry but, I feel the urge to build more than 500ci stroker. Got these last week.

Wow! Nice looking heads!