want free jegs gear?

Comment on any of our posts with your expertise and we'll send you a bag of JEGS schwag.

Learn More >

Customer q:

I want to build a 400 to 450 hp motor either using my existing 326 or starting from a fresh block. What do you recommend?


engine = 326

make = Pontiac

model = Le Mans

name = Dave

trans = auto

year = 1966


What I would do to reach those numbers would be either have your heads worked and run 10-1 C/R and you will be in the ball park around 400hp. Now to get around the the 450, you will want a butler performance 380 stroker kit with same c/r with head work will put you around 450-475 hp range. The Edelbrock stuff we have will not work on 326 with the valve size. If you need further assistance we are here 24/7.

car specs

social media

exterior modifications
interior modifications

The JEGS Difference

We are dedicated to providing our customers with the very best in selection,value, same day shipping and lifetime support. Thank you for choosing JEGS!

auto car parts help
Posted on
March 26, 2018

Psst! Want a chance to win FREE SCHWAG? Comment on this post and click here for details on the JEGS Comment Contest >

You Might Also Like

Follow us on Instagram to get notified about new products and discounts

Follow Us