The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Big Blue 1975 C30 --> K30 Conversion and other Upgrades.

Honest Bob · 07-03-2019, 01:26 PM

The goal is to combine the best stuff from each truck onto this CUCV frame. I've never attempted any project this large before, I've done alot of research but still have alot more to go.

I'm going to start with getting the frame rolling. I'm going to make a list here to keep things organized.

1. Verify Gear ratio's on all three axles. I'm hoping I can use the rear from the 2wd so I dont have to move spring perches and I can keep the big rear brakes. Blue has 4.10's Rat has 3.21's (I guess that's why it got so much better gas mileage!)

2. See if I can use the 2wd JB8 front calipers on the 10 bolt.

3. See if I can reuse the Rat's old ubolts. Yeah right!

4. Order ORD bolt in steering brace.

07-03-2019, 01:26 PM	#3
Honest Bob Registered User Join Date: Jan 2017 Location: Easton PA Posts: 212	Re: Big Blue The goal is to combine the best stuff from each truck onto this CUCV frame. I've never attempted any project this large before, I've done alot of research but still have alot more to go. I'm going to start with getting the frame rolling. I'm going to make a list here to keep things organized. 1. Verify Gear ratio's on all three axles. I'm hoping I can use the rear from the 2wd so I dont have to move spring perches and I can keep the big rear brakes. Blue has 4.10's Rat has 3.21's (I guess that's why it got so much better gas mileage!) 2. See if I can use the 2wd JB8 front calipers on the 10 bolt. 3. See if I can reuse the Rat's old ubolts. Yeah right! 4. Order ORD bolt in steering brace. Attached Images __________________ 1975 GMC C35 - Junk yard survivor. 1986 Pampered Private - M1009 Last edited by Honest Bob; 07-03-2019 at 09:19 PM.