4.1 buick block

blackv6

Member
Joined
Nov 1, 2011
r the 4.1 buick blocks worth anything. Came across one wondering if its worth the effort
 
Yes and no. It's limited to about 500 HP but it will produce more torque. Just remember that cubic inches will make more power but the block will limit you.:)
 
I have built a few 4.1 engines for customers, and a couple for my personal use, and absolutely love their awesome low end torque! :)

Before the alum block that I now run in my race car, I had a built 4.1 that ran consistent low 10's and was very reliable. With the car weight and build at the time, the HP at the flywheel approached 700 HP with a stock crank.

I am ready to build a production 4.1 again to run high 9's which it should do with a forged stroker crank and well ported TA alum heads fitted with a HPQ 70BB turbo, which will put the power needed slightly over 700 HP.

For a street build, I always prefer a 4.1 over a 3.8. :D
 
Love my 4.1 block. Run low tens very easily with my sig setup. Awesome on the street too. Lag was like night and day compared to my 3.8.
 
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