'76 Highboy NEEDS HELP

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Jul 23, 2015 | 09:45 PM

kekoamaikalani

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New User

Joined: Apr 2015

Posts: 3

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From: Provo, Utah

'76 Highboy NEEDS HELP

There's probably information somewhere, but i have a few answers that ive been searching for! First off, im planning on turboing a fe 390 that i am currently rebuilding. any recommendations on turbos? Do yall like blowthrough or bypass boosting better? Im pretty sure that i have the NP-435 tranny. will that be able to handle the additional power? what u-joints/ yokes/ driveshaft/ axles should i be using so that im not worried about breaking stuff all the time? Should i get rid of the 5' blocks in the back and go to long shackels/ extra sprung leafs? What traction bars have been working for yall? SORRY FOR ALL THE NOOBISH QUESTIONS ITS MY FIRST TIME BUILDING/RESTORING A TRUCK AND I HAVE CLOSE TO ZERO HELP. THANKS.

Jul 23, 2015 | 09:57 PM

Jdeshler

Fleet Mechanic

Joined: Jun 2013

Posts: 1,895

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There aren't too many turbo'd FE's here that I have seen.. I'm sure someone here is knowledgeable about it and has one tucked away..

The only Turbo I have had experience with is the Garrett on my powerstroke and it has been an excellent 25-30 psi Turbo.

What are you're plans for the truck? Rockclimbing, mudbogging, street?

I have personally never had issues with my blocks but I have never had that much horsepower. I would recommend swapping to a good arched leafspring to get the desired lift.

We are here to help so ask away!

Jul 25, 2015 | 11:43 AM

Tank77

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Joined: Jun 2015

Posts: 91

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I agree djeshler, haven't heard of to many 390's with a turbo.. Do your homework as that can get very very expensive.. The suspension on your Highboy is bulletproof so you should be good and the NP 435 is a very strong tranny. Good luck and welcome, I'm new also and the guys on here are great so ask whatever...