Re: 67-72 BigBlock 4x4s! Pos pics info here.
I used the DIY crossmember and it did not fit well...when I bolted it to the frame, it pulled the frame rails in...moving the engine mounts in by a 1/4"...I actually had to get the hot-wrench out and heat up the center of the crossmember, then use a porta-power to "spread" the frame rails back out to where they should be...stretching the crossmember at the same time.
I also installed a 2" body lift. I had to "clearance" the firewall for the HEI and tall valvecovers...as it is, I have about a 1/4" of clearance between the valvecovers and the firewall...I figure they will "self-clearance" when I get on the 468. I had to notch the frame a lot to clear the Corvette manifolds...so much so on the pass side, that I had to box it in with 1/4" plate to stiifen that part of the frame..(really wanted run those manifolds, lol).
Note: I did not move the drivetrain forward. I should have. Would have given more clearance all the way around.
Here are some pics
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'68 CST SWB factory 396/T400
buddy buckets, a/c, ps, pb
'72 Corvette convertible 454/4spd/ac, ps, pb
'73 GMC Sierra Grande short wide 454/T400 ps, pb, ac
'77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original
'78 GMC Sierra Classic short wide 454/T400 ps, pb, ac
'72 GMC Sprint SP454. 1 of 38 built.
'73 GMC Sprint SP454. 1 of 71 built.
'75 GMC Sprint SP454. 1 of 25 built.
SOLD! '72 GMC K25 4x4 468/4L80e/NP205
build thread
http://67-72chevytrucks.com/vboard/s...23#post4324423
SOLD!'55 Chevy gasser 496/4spd
build thread
http://67-72chevytrucks.com/vboard/s...96#post4324396
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