Dodge 203 vs GM 203 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

B. W. · 10-26-2018, 03:29 PM

What's different between a Dodge 203 T-case and a Chevy 203? I have a '79 k2500 & the t-case needs to come apart. I want to swap it out so the truck isn't down. Found a cheap Dodge case, just wondering?

sweetk30 · 10-26-2018, 04:56 PM

first off i bet the input gear is not 27 or 32 spline for the 2 gm counts they used . this would require a tear down of the t-case to swap over .

B. W. · 10-26-2018, 11:30 PM

Thanks for the input, you're spot on, I was too lazy to google it. Think I'll keep looking.

10-26-2018, 03:29 PM	#1
B. W. Registered User Join Date: Nov 2014 Location: Bigfork, Montana Posts: 1,137	Dodge 203 vs GM 203 What's different between a Dodge 203 T-case and a Chevy 203? I have a '79 k2500 & the t-case needs to come apart. I want to swap it out so the truck isn't down. Found a cheap Dodge case, just wondering?

10-26-2018, 04:56 PM	#2
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Dodge 203 vs GM 203 first off i bet the input gear is not 27 or 32 spline for the 2 gm counts they used . this would require a tear down of the t-case to swap over . __________________ 77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great.

10-26-2018, 11:30 PM	#3
B. W. Registered User Join Date: Nov 2014 Location: Bigfork, Montana Posts: 1,137	Re: Dodge 203 vs GM 203 Thanks for the input, you're spot on, I was too lazy to google it. Think I'll keep looking.



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