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1981 Chevy SWB C10 2WD to get 5.3L 4L60E swap

CHIEFWAHO

Former SOA VP
Lifetime Member
SOA Member
SOA Board Member
City
Thayer
State
KS
1981 Chevy SWB C10 2WD to get 5.3L 4L60E swap

We have owned the old truck since the mid 80’s. Drove it thru high school.
Has set the last few years as the 305ci with turbo 350 just guzzles too much gas.

Picked up a 2WD, 5.3L (DBC), 4L60E combo it’s supposed to be from a 2003 Tahoe with 56K miles.
After tearing into the motor and trans I do not believe it to be a 2003.
Still researching but to many things suggest an earlier model.
Will probably have to get them ECM read to be sure.

Motor trans swap is the priority for now.
After that, probably a mild lowering kit with some 20" rims and tires.
Body and paint further down the road.



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Engine tranny combo
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Parts stock pile: gas tanks, headers, misc
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Started stripping her down
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Labeled the harness during removal
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Been slow going, lot of cleaning, painting.

CAM install. Guess I got excited and forgot pictures.
Texas Speed package (Comp) 220/220 .581/.581 LSA 112 CAM
w/ .625 beehive springs, 7.40 chromemoly pushrods


Currently working on getting heads back together.

Got lucky at a swap meet, picked up the engine lifting plate for $20
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The aluminum parts are being sand blasted and then clear coated with hi-temp. Hi-temp gloss black on the block.
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New shallow oil pan kit # 12631828
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Lapping the valves. Did not really need it but while I was in there thing.
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Last edited:
Assembled and installed the heads over the weekend.
Really like the silver and black combo.

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