The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Whats the most miles youve ever gotten out of a chevy 400 before a rebuild?

86c20 · 06-22-2015, 08:35 PM

its all in care yes but it is in the way its made too. we all no that some years they changed things to save money and thats when heads crack or the rods go or what ever.

no with that said i have seen some of the mexican gm crates that are said to be junk (most are i have 4) go over 250k all the way to 375 but it was low hp the guy took grat care and used it light plus all highway driving a 70. it all plays in.

i think that a real number for miles on a avage motor would be around the 150-200 make before it really should be looked at hard for a driver. if you are plaining hard work or high hp rebuild it anyway.

06-22-2015, 08:35 PM	#11
86c20 Registered User Join Date: Mar 2012 Location: edgartown mass Posts: 852	Re: Whats the most miles youve ever gotten out of a chevy 400 before a rebuild? its all in care yes but it is in the way its made too. we all no that some years they changed things to save money and thats when heads crack or the rods go or what ever. no with that said i have seen some of the mexican gm crates that are said to be junk (most are i have 4) go over 250k all the way to 375 but it was low hp the guy took grat care and used it light plus all highway driving a 70. it all plays in. i think that a real number for miles on a avage motor would be around the 150-200 make before it really should be looked at hard for a driver. if you are plaining hard work or high hp rebuild it anyway. __________________ 1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car