1970 6cyl to v8 swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

swb70 · 11-17-2006, 09:54 PM

Have a 1970 swb chevy with 6cyl/powerglide(no ps/pb) that I have restored. Want to replace the 6 with a v8. So I bought a 1972 lwb with 350/350, ps,pb. Question, will everything under the hood of the 72 bolt right in to my 70.
Mainly concerned about the steering column for ps and the 350 shift indicator and length of the drive shaft. Any other obsticles I need to know about.
Thanks

Americanrider · 11-17-2006, 11:30 PM

Drive shaft maybe, everything else will fit like a glove. The GM Gods would not have it any other way. Just a reminder to change the motor towers and move them to the forward position for a V8.

ThatOneBlue67 · 11-18-2006, 02:46 AM

The power brake booster won't work unless you convert your front end to discs. You'll also have to change the steering gear bpx to getthat power steering. Have fun, I just did what you will be doing.... MY GOD WHAT A DIFFERENCE!

Americanrider · 11-18-2006, 03:03 AM

There are trucks out there that have Power drum brake systems. 2 months ago I pulled a booster from a 68 Chevy in a wrecking yard and plan to install it on my 70 GMC. The booster will work, but you will have to keep your Drum-Drum proportioning block if you keep your drum brakes. Or just convert the whole system to 5 lug disks, front brake lines, booster, Disk/Drum P-block and all.

11-17-2006, 09:54 PM	#1
swb70 Registered User Join Date: Sep 2003 Location: Commerce Texas Posts: 36	1970 6cyl to v8 swap Have a 1970 swb chevy with 6cyl/powerglide(no ps/pb) that I have restored. Want to replace the 6 with a v8. So I bought a 1972 lwb with 350/350, ps,pb. Question, will everything under the hood of the 72 bolt right in to my 70. Mainly concerned about the steering column for ps and the 350 shift indicator and length of the drive shaft. Any other obsticles I need to know about. Thanks

11-17-2006, 11:30 PM	#2
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Re: 1970 6cyl to v8 swap Drive shaft maybe, everything else will fit like a glove. The GM Gods would not have it any other way. Just a reminder to change the motor towers and move them to the forward position for a V8.

11-18-2006, 02:46 AM	#3
ThatOneBlue67 I survived Dead Man's Curve. Join Date: Apr 2006 Location: The Nine-Five-687 Posts: 389	Re: 1970 6cyl to v8 swap The power brake booster won't work unless you convert your front end to discs. You'll also have to change the steering gear bpx to getthat power steering. Have fun, I just did what you will be doing.... MY GOD WHAT A DIFFERENCE! __________________ "The people should not be afraid of their government. The government should be afraid of it's people." "The Hurricane" 1967 Chevrolet C10 350 Eight Cylinder, 700R4 BowtieOverdrive *Cherry Bomb...* Disturbing the Peace Since 1968.

11-18-2006, 03:03 AM	#4
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Re: 1970 6cyl to v8 swap There are trucks out there that have Power drum brake systems. 2 months ago I pulled a booster from a 68 Chevy in a wrecking yard and plan to install it on my 70 GMC. The booster will work, but you will have to keep your Drum-Drum proportioning block if you keep your drum brakes. Or just convert the whole system to 5 lug disks, front brake lines, booster, Disk/Drum P-block and all.

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