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Living Large · 08-02-2010, 07:37 PM

Nice project. I finished my 1991 suburban Cummins conversion in April of this year. I did a very similar conversion, but with an automatic trans. I also used the stock GM alt and AC compressor, in their factory locations. What style of crossmember are you going to use? Have you had frame flex or twist problems in the past with other conversions?

08-02-2010, 07:37 PM	#9
Living Large Registered User Join Date: Jul 2010 Location: Madera Ranchos,CA. Posts: 2	Re: 1990 GMC Suburban ... Cummins Powered Nice project. I finished my 1991 suburban Cummins conversion in April of this year. I did a very similar conversion, but with an automatic trans. I also used the stock GM alt and AC compressor, in their factory locations. What style of crossmember are you going to use? Have you had frame flex or twist problems in the past with other conversions?