William Maybush

I'm new to this site. I need some help to figure out what I'm doing I have a 408ls with 317 heads btr stage 3 came with a blow through set up supper Vic intake and csu carb 6010 box with a eBay gt45 turbo and a 1000 fuel pump and a 2 speed power glide. I have know clue how much power I should expect cause I have no clue on how to tune it.

Doug G

I don't understand 317's and 408" unless ported.

BUT, I would have to say 550+ only due to the turbo.

Greg.H

If it's a tuned engine that you want, I can trade you my 5.3 for your un-tuned 408

Here's a good thread on tuning for mileage: https://ls1tech.com/forums/carburete...cd-tuners.html

Here's one for tuning for power:http://www.innovatemotorsports.com/r...uning-hero.php