07-15-2009, 01:58 PM
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#7
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Senior Member
Join Date: Nov 2005
Location: AL
Posts: 2,519
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Re: !!!!5.3 Vortec Swap Started!!!!
Quote:
Originally Posted by sick454
I don't plan on drag racing the truck but I want to do some bolt on performances later(supercharger/turbo's). So, with that in mind I want a tranny that will hold up to Horsepower. Maybe a 4L80-E?? Not sure, any suggestions? Gas milage is the reason for this conversion to begin with. Also the 5.3 Engine is a Flexfuel vehicle.
I will be needing some economical suggestions for headers, fuel tank/pump, tranny cooler, motor mounts, cam, and electric fans. So, If anyone has made this swap and has some suggestions please let me know.
Thanks,
Sick454
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A 4L80E is going to kill your gas mileage even with the overdrive. Get a built 4L60E if you want to still get in the 18-20mpg range.
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