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**Bob B.** · 10-21-2015, 03:22 AM

I believe there were few '58-'59 GMC's built with 4-71T's and 6-71T's. I think they were different than later turbo'ed Detroits, didn't use a bypass blower. Supposedly made a lot of power, for a little while anyway....

10-21-2015, 03:22 AM	#54
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,309	Re: Detroit Diesel Thread I believe there were few '58-'59 GMC's built with 4-71T's and 6-71T's. I think they were different than later turbo'ed Detroits, didn't use a bypass blower. Supposedly made a lot of power, for a little while anyway.... __________________ 1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.