HELP! Swap in a Vortec 8.1 or build my 5.3??

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blackjack

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Just rebuild the 5.3...
SOOO MUCH STUFF YOU CAN GET
Mine is a beast with a comp .525, no AFM, bigger ThrotBody, Airraid, new waterpump, oil pump, chain, no cats-duals with balance tube and shift kit in 4LE and royal purple in G80diff. ppv wheels tires 265x60x17's and 3.73's.
Less than 1700$ parts and I would value the labor at ...maybe $1,500+- (did mine in driveway, except friend did tranny)
Guess what...still gets 14 1/2 - 15 1/2 mpg and I have a (very) heavy foot.
 
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Pilot

Pilot

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Just rebuild the 5.3...
SOOO MUCH STUFF YOU CAN GET
Mine is a beast with a comp .525, no AFM, bigger ThrotBody, Airraid, new waterpump, oil pump, chain, no cats-duals with balance tube and shift kit in 4LE and royal purple in G80diff. ppv wheels tires 265x60x17's and 3.73's.
Less than 1700$ parts and I would value the labor at ...maybe $1,500+- (did mine in driveway, except friend did tranny)
Guess what...still gets 14 1/2 - 15 1/2 mpg and I have a (very) heavy foot.


Awesome! Mind sharing your dyno results? I'm wondering what kind of low end torque/HP you can get out of a 5.3.
 

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