dereknkathy

there are all these aftermarket heads with largish oval-smallish rect ports. does anybody make an intake that falls about halfway between the 2 standard port sizes?

Black Baja

iTrader: (2)

You can buy cnc'd intakes from Brodix

SB

iTrader: (1)

I believe GM has a CNC dual plane oval port intake for the GMPP aluminum oval heads, which are the same as the Edelbrock heads..
Part #12363421 for spreadbore carbs and #12363407 for squarebore.

I believe this to be true, but never bought them.....so do your homework before buying.

getrdunn

iTrader: (7)

What heads you have? The old torker ll intake is what I used with dart 265cc oval ports and was a good fit.

getrdunn

iTrader: (7)

Very similar if not the same 049's size port

KRAUSMOTORSPORTS

iTrader: (2)

My Team-G intake matched my ported 049's very well. But i'll be switching intakes next go around.

dereknkathy

a pair of 7215s fell ion my lap. 101 cc chambers. 2.19 undercut intakes 1.88 exhausts. but in the old days apparently people thought it was a good idea to open the top of the port up to rectangle height. these were opened up about half way there. you can see the top of port just above a standard oval intake. apparently weiand team G and stealth have enough meat to seal a rectangle port with the oval intake. and it looks like the whole top of the runner is thick enough to enlarge the runner a ways in. though the more I think about it, I am considering epoxying in the top of the port and running an oval intake.

SB

iTrader: (1)

Dart oval single plane has enough meat to cover a rectangular opening. And, it's a good intake.

Most flow in a port is usually on the top of the port, thus why people raise the roof.

dereknkathy

But when you open up an oval, you can only really make the ledge into a rounded ledge. There is no meat a half inch in from the face. You would have a very high flow pcv vent. Best bet i guess would be just run a rectangle intake.

getrdunn

iTrader: (7)

if it's a budget build and or you don't want to hassle with trying to match just put the rectangle port on and and run it. It's not uncommon and I doubt you'll see any power loss. We expermitted with this some years ago and was surprising.