NHRA 2020 Rule Amendment SS Intakes???

[Steve Stasko]

I am familiar with the port layout of the Big Mopar and the Chevrolet. I was looking at it more from a width aspect, as I know the 383/400 uses a fairly wide intake. I know to use a RB Chrysler intake on a B motor, you need .85" plates on each side of the intake, as I tried a B-1 intake vs. a Mopar M-1 a number of years ago. Bringing up the 383 Mopar/Chevy intake thing is kind of irrelevant though if they aren't even running the car anymore?

As for the Buick...that started in the late 1960's/early 1970...I believe Kennedy Bell made the plates.

[BBF67]

Everyone knows there are bogus cylinder heads out there in S/S. Looks like the Tech dept has finally found a way to rid the class of heads that have been drastically cut at a severe angle on the intake side. Those bogus heads usually used a spacer plate to make up for the difference from the OEM angle. In the 2020 racing season it will be very interesting to see who shows up to race and who does not.

[Billy Nees]

Originally Posted by BBF67

In the 2020 racing season it will be very interesting to see who shows up to race and who does not.

Real Racers will race.

[SSDiv6]

Originally Posted by Billy Nees

Real Racers will race.

What do you mean by "real racers"? Can you elaborate?

In my book, anyone that spends the money and time to race in Stock and Super Stock class, is a real racer.

[Billy Nees]

Originally Posted by SSDiv6

In my book, anyone that spends the money and time to race in Stock and Super Stock class, is a real racer.

You hold that thought if it makes you feel better.

[SSDiv6]

Originally Posted by Billy Nees

You hold that thought if it makes you feel better.

Billy,
I call it the way it is and don't need your patronizing.

[SSDiv6]

One interesting fact is that as discussed earlier, one of the first users of intake manifold adapters in the 1970's was Ed Hamburger on his Mopar 340 and 360 Super Stock engines. The adapter allowed Ed to use a SBC intake. Therefore, since the 1970's NHRA has been allowing spacers and adapters in Super Stock class.

As a matter of fact the Ed Hamburger and Bruce Bachelder (former NHRA Tech Rep) Mopar used the adapter with the SBC intake until Offenhauser came out with the SBM Port-O-Sonic intake.

[SSGT Mustang]

This is a silly rule and that's being kind.

If the concern is the intake side of the head then make changes to head rule or maybe enforce the current rules.

Prohibit spacers? You have to wonder who if anyone at NHRA has any technical knowledge.

[SSDiv6]

Originally Posted by BBF67

Everyone knows there are bogus cylinder heads out there in S/S. Looks like the Tech dept has finally found a way to rid the class of heads that have been drastically cut at a severe angle on the intake side. Those bogus heads usually used a spacer plate to make up for the difference from the OEM angle. In the 2020 racing season it will be very interesting to see who shows up to race and who does not.

Angle milling heads has been a machine shop operation since the 1960's. Nothing new.

There are even automotive machining charts that gives you the average amount of milling required on an intake manifold when you deck and square an engine block and when you mill cylinder heads for proper combustion chamber sizing.

By the way, when the runner volumes are measured, it is done without the spacer. An approach would be to weld the spacer to the intake or use a sheet metal intake. Nevertheless, after decades of allowing the use of intake spacers on intake manifolds and angle milled cylinder heads, they are suddenly illegal just months prior to the first race of 2020.