Repower 1990 c7500 TopKick - The 1947 - Present Chevrolet & GMC Truck Message Board Network

restoreit66 · 11-25-2018, 11:54 AM

Question for you all,
I have a 1990 c7500 Topkick ex firetruck, has air brakes and a 427 gas engine with less than 13000 miles. The gas engine is a gas hog and no power and I'd like to change it. I have a 1984 Topkick with a cat 3208 that runs really good with low miles and the rest of the truck is shot, my question is: can this cat engine be put into this 1990's style Topkick?
Thanks for your help.

sweetk30 · 11-25-2018, 01:39 PM

what do you want for the 427 ?

i have a super clean dump truck that needs a new engine . my 366 was cooked beyond repair before i got it . i to have air brakes so this would be a bolt in for me .

**Bob B.** · 11-25-2018, 11:58 PM

I think sticking a 3208 in a 90's Topkick/Kodiak is going to be tough. The 3208 really didn't fit in the '73-'89 medium duty trucks, those so equipped had a raised cab mounting and a taller hood and you still had to lift the cab up to get the valve covers off. Not saying it can't be done, but it sure wouldn't be 'bolt in'.

11-25-2018, 11:54 AM	#1
restoreit66 Registered User Join Date: Feb 2016 Location: augusta maine Posts: 4	Repower 1990 c7500 TopKick Question for you all, I have a 1990 c7500 Topkick ex firetruck, has air brakes and a 427 gas engine with less than 13000 miles. The gas engine is a gas hog and no power and I'd like to change it. I have a 1984 Topkick with a cat 3208 that runs really good with low miles and the rest of the truck is shot, my question is: can this cat engine be put into this 1990's style Topkick? Thanks for your help.

11-25-2018, 01:39 PM	#2
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Repower 1990 c7500 TopKick what do you want for the 427 ? i have a super clean dump truck that needs a new engine . my 366 was cooked beyond repair before i got it . i to have air brakes so this would be a bolt in for me . __________________ 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.

11-25-2018, 11:58 PM	#3
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,369	Re: Repower 1990 c7500 TopKick I think sticking a 3208 in a 90's Topkick/Kodiak is going to be tough. The 3208 really didn't fit in the '73-'89 medium duty trucks, those so equipped had a raised cab mounting and a taller hood and you still had to lift the cab up to get the valve covers off. Not saying it can't be done, but it sure wouldn't be 'bolt in'. __________________ 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.



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