The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Robert1970C20rstbukt · 09-23-2009, 09:45 PM

The only big differences(to me) other than obvious body and grille changes in the newer trucks is in 1985 GM started using a hydraulic slave clutch instead of the mechanical linkage used on 1973-1984, and in 1987 TBI(throttle body injection) came out and replaced carburetors. I don't believe the frame itself changed, just different length wheelbases.

09-23-2009, 09:45 PM	#2
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Re: 70's 1 ton VS early 90s 1 ton trucks? The only big differences(to me) other than obvious body and grille changes in the newer trucks is in 1985 GM started using a hydraulic slave clutch instead of the mechanical linkage used on 1973-1984, and in 1987 TBI(throttle body injection) came out and replaced carburetors. I don't believe the frame itself changed, just different length wheelbases. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck Last edited by Robert1970C20rstbukt; 09-23-2009 at 09:46 PM.