another question on my non stroker 400 project

[1967coronet]

I will use the KB 240 pistons so I should be near 9.1 compression.
the heads { 452s } will just get a basic valve job no porting & a set of new stock springs and push rods,

Eddy performer Intake and 750 eddy carb
pertronix ignition & headers,

My brother told me comp cams has a cam & lifters that is pretty close to the 440mag / 440 six pack cam specs I would like to use with a new chain and gear set
my goal is 350 to 375 HP with a pretty smooth idle for my stock convertor.

do you guys think that set up will make 350hp ?
Thanks for any input or advice.

 

[lewtot184]

i've used the comp cams magnum replacement, #21-305-4. good torque. the summit 6401 is a good cam too. the mopar 272-.455 would be good.

 

[1967coronet]

Thanks again for the part #s and info lewtot184.
my old 383 has a little rattle in the bottom end. its a 1965 2bbl model with the 516 heads
I have all the bolt on parts on it right now 750 eddy ect.
Im going to rebuild this 400 and switch the after market parts over to it.

 

[IQ52]

It should reach your power goals with the build you are planning. Here are low compression (7.5:1) 400 dyno results using the Summit 6400 camshaft 214/224 @ .050, .446"/.466". It did have some cylinder head work which is very helpful.

285 HP w/2bbl and 361 HP w/4bbl

http://www.forbbodiesonly.com/moparforum/showthread.php?80843-The-slug-400-on-the-dyno&highlight=400+dyno

 

[1967coronet]

Thanks IQ52, Pretty interesting link and results even with the low compression pistons.

We drive our 67 a lot of miles each year, lots of road trips ect. So my goal was a pretty stock engine with good street / in traffic manners but with enough HP Its still fun to kick it in the butt.
Our rear diff has the tried and true 3:23 sure grip so I want to keep the power more to the low end
Thanks again guys.

 

[Cranky]

As far as the ports go, the very minimum I do on any head are the bowls (valve pockets) and make sure the ports match. The factory bowls really suck. If do nothing else to the ports, at least do this.