GMC 302
Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=82426
Printed Date: 18 Aug 2025 at 10:40pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: GMC 302
Posted By: bmartin55
Subject: GMC 302
Date Posted: 29 Dec 2013 at 8:01pm
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Can git a GMC 303 in line 6.... Will it bolt up to a WD.. Thout it would make a pulling motor.. it lugs down good.. 4 in bore & 5 in stroke.. THANKS FOR THE HELP...BOB
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Replies:
Posted By: Coke-in-MN
Date Posted: 30 Dec 2013 at 12:29pm
they were a good old truck engine - lot of lugging power - also seen them used in stock care racing when reworked back in the old days when i raced turned up RPM and sounded like model airplane engine .
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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.
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Posted By: blue924.9
Date Posted: 30 Dec 2013 at 8:27pm
are you sure its 303? with a 4 by 5 bore/stroke it would be more than 300 cubes, my truck has a 3.98 by 4 stroke and is 300 cubes
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hi my names dan, I am a young guy. i have a problem, i prefer my tractors orange and my clutches mechanical, thanks for letting me share
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Posted By: bmartin55
Date Posted: 30 Dec 2013 at 10:51pm
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It is 1955 GMC 302 in line 6 cyl.. Used in trucks...bus ..& miletary trucks... Do aney one know if it will bolt up to allis trans WD or WC.. its same patern as chevey....THANKS BOB
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Posted By: BennyLumpkin
Date Posted: 31 Dec 2013 at 6:47am
There is a guy on Youtube with one. Its definetly not a direct bolt up but it can be done.
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Central PA Allis Express
1934 WC254
1945 WF
1945 WC135755
1951 WD68085
1953 WD45-150217
1957 WD45D-230744D
B110
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Posted By: L Hud
Date Posted: 09 Jan 2014 at 4:54pm
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It is very doable. I did a 292. Adapter plate for the tranny and probably a spacer of flywheel. There are pics of mine somewhere on this board. Hud
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