401m performance upgrades. - 6066 (1960-1966) GMC Truck Club

Charon · #1 June 26th, 2016, 05:08 AM

Looking for recipies for the 401 engines. Or ideas. I have the baseline data for the 305 -351 engines. And a lot of modification data. I run these on my engine performance software. The hard part was the initial data. But now that's done. So any real mods on the 401. I have some things cooked up. And am going to apply it to a 401. Just wondering. Soon as the 401 data is done I am going to post 305-351-401. All hp and torque curves. Plus all modifications I have seen.

bobdylan · #2 June 26th, 2016, 03:13 PM

That will be awesome, would love to see the data.

beerman · #3 June 26th, 2016, 03:31 PM

I've seen the bore and stroke info but what is the rod length on these motors.

beerman · #4 July 6th, 2016, 02:19 AM

Can anyone verify these specs
Rod length is 7.185"
Deck Height is 11.600"

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