The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Big Block Guys.......Average MPG Questions

TP from Cntl PA · 01-22-2006, 09:14 PM

I am looking at a truck with a Big Block(K20) and was wondering what you guys that are running them average fuel mileage wise. I always wanted a K20, not to mention it will allow me to have a truck while I do all the body work to my C20 Cummins truck. This truck has had a 454 installed running through a 4 spd.

Also, anyone running an NV4500, NV5600, or 6spd ZF behind a big block?

01-22-2006, 09:14 PM	#1
TP from Cntl PA Registered User Join Date: Apr 2003 Location: Central PA....In the Berg of Nisbet Posts: 790	Big Block Guys.......Average MPG Questions I am looking at a truck with a Big Block(K20) and was wondering what you guys that are running them average fuel mileage wise. I always wanted a K20, not to mention it will allow me to have a truck while I do all the body work to my C20 Cummins truck. This truck has had a 454 installed running through a 4 spd. Also, anyone running an NV4500, NV5600, or 6spd ZF behind a big block? __________________ '72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!!