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Re: Winging a 1971 K5 Blazer L96 6L90 Swap
Take this with a grain of salt - A few years ago, I did an L96/4L80 with a 3.73 gear in a NASCAR inspired late 70s C10 with a Fitech set up.
Set the motor and trans without the cab on the frame and had no issues with the cab clearance. I know 2WD vs 4WD and 1st vs 2nd gen - hence the "take this with a grain of salt"
The issue I had is the L96 ran hot and was a thirsty ***** with the 80 pound injectors and the tune. I had to go back and do some heat displacer matting on the firewall and the inside of the cab.
My tuner buddy swears by the 6L90 - says they handle a ton of HP/TQ in their stock form. Way past what they are rated for.
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