later year crossmember not the same ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fnoblitt · 11-11-2007, 09:58 PM

i was trying to lower the cab onto my frame today and the floor is sitting on the transmission (700r4) and there is a 1" gap from bottom of front of cab to top of front body cushion. the truck was a 3 speed originally. the x member i found in the junk yard is from a 76 truck. it bolted right up but i think it is not the same as the 70 automatic x member. does anyone know the differance ?

Blazer1970 · 11-12-2007, 07:34 AM

Even in the '67 - '72 era the crossmembers for different trannies have different amounts of drop to keep the tranny (and t-case on 4WD) away from the floor pan.

**special-K** · 11-12-2007, 11:08 AM

I`m not sure.But,it does sound like the later crossmember put`s the trans up higher.the`73-ups all had a high hump(right?),so it didn`t matter.

11-11-2007, 09:58 PM	#1
fnoblitt Registered User Join Date: Mar 2002 Location: southern calif.,usa Posts: 200	later year crossmember not the same ? i was trying to lower the cab onto my frame today and the floor is sitting on the transmission (700r4) and there is a 1" gap from bottom of front of cab to top of front body cushion. the truck was a 3 speed originally. the x member i found in the junk yard is from a 76 truck. it bolted right up but i think it is not the same as the 70 automatic x member. does anyone know the differance ? __________________ 70 c10 stepside ,350v8, m-20 4 speed

11-12-2007, 07:34 AM	#2
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: later year crossmember not the same ? Even in the '67 - '72 era the crossmembers for different trannies have different amounts of drop to keep the tranny (and t-case on 4WD) away from the floor pan. __________________ Tim

11-12-2007, 11:08 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: later year crossmember not the same ? I`m not sure.But,it does sound like the later crossmember put`s the trans up higher.the`73-ups all had a high hump(right?),so it didn`t matter. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~



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