5.3 in a 71 Chevy truck??
#1
5.3 in a 71 Chevy truck??
Im putting a 5.3 and 4L60 in a 71 chevy truck. Just wanted to know some details and what kind of problems anybody has had, like clearance issues, tranny Xmember, AC box, motor mounts etc.. any help would be great.
#2
TECH Veteran
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You can check out my build thread, it's a 6.0 but basically the same. I built a 68 with a 5.3 a couple of years ago, but I do't have a build thread on it.https://ls1tech.com/forums/conversio...6-0-4l80e.html
#3
You can check out my build thread, it's a 6.0 but basically the same. I built a 68 with a 5.3 a couple of years ago, but I do't have a build thread on it.https://ls1tech.com/forums/conversio...6-0-4l80e.html
#4
TECH Veteran
iTrader: (4)
I used the factory automatic transmission crossmember, just slid it back and drilled new holes in the frame. Unless you take the cab off, or are real good with an angle drill, you won't be able to use the upper frame bolts, but it's never been a problem.
Also, I used the 72 rubber mount so the holes in the crossmember would work.
Also, I used the 72 rubber mount so the holes in the crossmember would work.
#5
I used the factory automatic transmission crossmember, just slid it back and drilled new holes in the frame. Unless you take the cab off, or are real good with an angle drill, you won't be able to use the upper frame bolts, but it's never been a problem.
Also, I used the 72 rubber mount so the holes in the crossmember would work.
Also, I used the 72 rubber mount so the holes in the crossmember would work.
#6
TECH Veteran
iTrader: (4)
Yes that's what I did, I took the frame stands off of the 2003 truck (they unbolt) and fabbed some pieces to them so that they would bolt to my frame. Not having to use the '72 frame stands also allows the F-body exhaust manifolds to be used without hacking a piece out of the frame stand. But I did still have to notch the frame a little.