tims86vette

Building a 383 block with comp cam 266hr-14. anyone know for sure what afr heads will work for this motor. Have motor built and want to order heads just want to make sure. any suggestions would be appreciated using it for street and the occasional strip runs.

steven mack

The 195 cc port seems to be the right size from what builds I have seen on this site and others.

tims86vette

need part number that will fit . are they 90 degree or 72 degree heads . may not make a difference with superram.

rklessdriver

What pistons do you have? How far in the hole are they? Which head gaskets do you have? And what Static Compression Ratio do you intend to end up with?

It'll make a difference in what combustion chamber size you need.

With that small cam and a Super Ram the 195 will work well. It will make for near stock driveability and lots of mid range power.

I want to caution you that the short seat timing of that cam and early intake closing point will not stand a lot of compression on 93 octane.... I would keep it around 10.5 SCR.
Will

vader86

I'm using X1040F AFR 195cc Elims

tpi 421 vette

You would probably want the #1040. It has angle spark plug with 65cc chamber. The #1038 gives you a angle spark plug and 75cc chamber. The #1041 has the 72 degree intake manifold angle, that is for using a stock tpi base on the earlier years that used it. Most aftermarket bases are slotted on the middle intake bolts, so either heads will work.The #1041 also uses a 65cc chamber. There are upgrades on the heads for 7/16 rockers studs, ti retainers, or you can have a option to have the heads drilled for a centerbolt valve cover pattern. the heads come standard with the perimeter style valve cover bolt pattern.