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BobS · 08-30-2005, 10:06 PM

For on-vehicle service information you need the manual that vortexofpain has listed. There is a separate overhaul manual if you want rebuild information. The one that I have is X-6A-01, printed July of 1967 and it covers the 305C, 305E, 351C, 351E, 351M, 401M and 478M V-6s. It also covers the 637 V-8.

Bob

08-30-2005, 10:06 PM	#4
BobS Senior Member Join Date: May 2001 Location: West Central Minnesota Posts: 569	For on-vehicle service information you need the manual that vortexofpain has listed. There is a separate overhaul manual if you want rebuild information. The one that I have is X-6A-01, printed July of 1967 and it covers the 305C, 305E, 351C, 351E, 351M, 401M and 478M V-6s. It also covers the 637 V-8. Bob __________________ V-6....only GMC Trucks have it! 62 GMC W5000 NAPCO-V6 65 GMC 2500 NAPCO Panel-V6 66 GMC 1000-V6 66 GMC 1500-V6 67 GMC K1500-SBC (originally a KM-V6) 68 GMC C1500-V6 68 GMC C1500-V6 68 GMC Suburban C2500 70 Chevy K20-SBC 71 Chevy C30 Longhorn-SBC 72 GMC Suburban C1500-BBC 72 Chevy C10-SBC 72 GMC C5500-ToroFlow Diesel