Visit The Dirt Forum for More Information

Author Topic:   383 with Vortec or Pro Action heads
Dirt Newbie

Total posts: 3
posted March 22, 2003 09:10 AM
I am putting together a 383.

But I have not made my mind up what heads to use.

Vortec? (Stock with ***** in studs)

Pro Action?(230cc 64cc comb. chamber)

Both head will be used with pop up pistons
about 12/1 or 13/1

What horsepower numbers will each produce?


Dirt Maniac

Total posts: 135
posted March 22, 2003 09:29 AM
Vortec heads are good, but only when compared with other OEM GM heads. Compared with aftermarket or even Bowtie stuff, they cannot compete. I don't know if the 230cc port is the right one for your application, but if your rules allow aftermarket, then that is the way to go.

Dirt Full Roller

Total posts: 63
posted March 22, 2003 11:37 AM
you might have a problem with the dome pistons on vortec heads. i would go with the pro heads. they flow much much better than vortecs also. vortecs also tend to crack if you get them hot...this castings.


Dirt Newbie

Total posts: 3
posted March 22, 2003 05:51 PM
I run IMCA Mod!
What size runners? 200 210 220 230

Dirt Freak

Total posts: 467
posted March 22, 2003 11:16 PM
Since your going to be so low on compression ratio , I'd use the 220cc head .


Hendren Racing Engines
Rutherfordton , NC

Back to the Archives