The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What is the best cruising RPM ?? I need a good rear ratio and tranny!

RACINJASON22 · 02-07-2007, 01:00 AM

here are some #'s for ya. Hope they will help. I'm not real sure about the bigblock stuff cam seems a little big just the #'s
Ratio = (rpm x tire diameter) divided by (mph x 336)

RPM = (mph x gear ratio x 336) divided by (tire diameter)

MPH = (rpm x tire diameter) divided by (gear ratio x 336)

Tire Diameter = (mph x gear ratio x 336) divided by (rpm)

02-07-2007, 01:00 AM	#4
RACINJASON22 GEARHEAD Join Date: Jan 2007 Location: CENTRAL,PA Posts: 2,284	Re: What is the best cruising RPM ?? I need a good rear ratio and tranny! here are some #'s for ya. Hope they will help. I'm not real sure about the bigblock stuff cam seems a little big just the #'s Ratio = (rpm x tire diameter) divided by (mph x 336) RPM = (mph x gear ratio x 336) divided by (tire diameter) MPH = (rpm x tire diameter) divided by (gear ratio x 336) Tire Diameter = (mph x gear ratio x 336) divided by (rpm) __________________ 72 SWB 2WD MY PROJECT 72 LWB 4X4 FUTURE PROJECT SUBSCRIBE HEREBOARD VENDORS HERE NORWOOD MEET SURVIVOR!