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The Youngen · 07-15-2011, 07:24 AM

I was thinking about putting a t5 behind the n/a 6.2. It has a 2.94 1st and a .73 od. If my math is correct, with stock tires at 28.5 inches, .73 od, 70 mph, and 3.08 in the back it is roughly around 1800 rpm which is according to dieselplace.com the rpm/mpg sweet spot. Plus, it should actually get better off the line than the turbo 400 because of the 2.94 1st vs 2.54 with 3.08. Reason im asking for someone's thoughts was because everyone has said 3.08 and a 700r4 (.7) od, will kill mpg but thats for gas, it looks to be beautiful for diesel.
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07-15-2011, 07:24 AM	#53
The Youngen Registered User Join Date: Oct 2010 Location: Westbrook CT Posts: 81	Re: Questions about a Gas to Diesel conversion for a '72 I was thinking about putting a t5 behind the n/a 6.2. It has a 2.94 1st and a .73 od. If my math is correct, with stock tires at 28.5 inches, .73 od, 70 mph, and 3.08 in the back it is roughly around 1800 rpm which is according to dieselplace.com the rpm/mpg sweet spot. Plus, it should actually get better off the line than the turbo 400 because of the 2.94 1st vs 2.54 with 3.08. Reason im asking for someone's thoughts was because everyone has said 3.08 and a 700r4 (.7) od, will kill mpg but thats for gas, it looks to be beautiful for diesel. Posted via Mobile Device __________________ 71 Chevy C10 350/TH350 71 GMC C20 350 (donor truck) 82 Chevy K20 Suburban 6.2/TH400/NP 95 Chevy 4x4 1500 Tahoe 6.5T/4L80E 04 Chevy 4x4 3500 Silverado 6.6T Duramax/Allison 1000 (work truck) 09 Chevy Aveo 1.6L/5 speed manual