CLASS RACER FORUM - Wondering

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Jim Hanig

01-28-2017 09:03 PM

Wondering

Why the 1970 71 are allowed to run the older type intake on the 375 425 402 454, and the lower hp 365 454 and the 300 402 are stuck with the low terrible intake.?

Billy Nees

01-29-2017 08:52 AM

Re: Wondering

rectangular port heads vs. oval ports.

BBF67

01-29-2017 10:46 AM

Re: Wondering

Everyone knows that both rectangular port and oval port big blocks used the low profile intake on all models of Chevrolet for 70-71. Someone in the tech dept believed bogus data that was submitted by a non-racer "expert" and allowed the taller intake from earlier years to be accepted.

Billy Nees

01-29-2017 10:49 AM

Re: Wondering

Quote:

Originally Posted by BBF67 (Post 525349)

Someone in the tech dept believed bogus data that was submitted by a non-racer "expert" and allowed the taller intake from earlier years to be accepted.

There seems to be an awful lot of that going around lately!

Chipper Chapman

01-31-2017 08:00 PM

Re: Wondering

I'd love to be able to put a 69 high rise iron on our 71 LS5! lol

Jim Hanig

02-01-2017 06:02 PM

Re: Wondering

Quote:

Originally Posted by Chipper Chapman (Post 525579)

I'd love to be able to put a 69 high rise iron on our 71 LS5! lol

Have you ever tried one ?

Chipper Chapman

02-02-2017 05:42 PM

Re: Wondering

Quote:

Originally Posted by Jim Hanig (Post 525661)

Have you ever tried one ?

I have my own dyno now so we are trying one for giggles this winter

Jim Hanig

02-02-2017 06:53 PM

Re: Wondering

Quote:

Originally Posted by Chipper Chapman (Post 525759)

I have my own dyno now so we are trying one for giggles this winter

Thats, intresting i am going to port one and just see if its any better. On the dyno, let me know how yours works out and ill do the same.

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