Charles Servedio, Dangerous Donny's 540-440 Mopar project. Trick flow 270 cnc heads, small back cut vs. Large back cut

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[PRH]

Maybe it’s just me, but I found the info presented in the last two to be pretty “scattered”.

It does reinforce my thoughts that re-porting cnc ported heads doesn’t fall into my “the most(gain) for the least(effort)” credo.

He did a nice job on that manifold.

 

[autoxcuda]

BTW those M1 RB intakes have been cloned and 440 Source is selling them. Sadly with the thermoquad carb pattern though.

Intake Manifolds & Accessories-store.440source.com

Low deck version is coming soon they say.

They will have a stock intake port

 

[PRH]

It’s a different manifold.
The one in the video is the “337”, which is RB/MW ports, 4150 carb flange.

“Sadly with the thermoquad carb pattern though.”

Universal carb pad…..fits spread bore and square bore.

 

[autoxcuda]

It’s a different manifold.
The one in the video is the “337”, which is RB/MW ports, 4150 carb flange.

“Sadly with the thermoquad carb pattern though.”

Universal carb pad…..fits spread bore and square bore.

It just would have been nice to put a little effort to make it a square bore with dual pattern. The few TQ guys could die grindered it to a proper spread bore. What it is now is a compromise of both.

But begged can’t be choosers. Very happy they are taking on these part Mopar Perf/Direct Connection is doing nothing with.

Here’s what you can do that helps air fuel mixture and make a little more HP

 

[PRH]

I had the opportunity to dyno test a Hughes modded M1 against a non-square top M1 on a 446 in the 600hp range.
It was like a 5hp difference……..way less than the owner was expecting.

 

[67Dart273]

Money, honey!!