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#72454 01/30/2007 6:20 AM | Joined: Feb 2004 Posts: 18 Junior Member | | Junior Member Joined: Feb 2004 Posts: 18 | I have a good GMC 261 that I would like to rebuild and put into my 1953 GMC 5 window.
Does anyone have any suggestions on which route to go on the rebuild, ie: more horsepower, bore it out....
Or is there any reason to stay away from the 261.
The 261 has some sentimental value from the farm and it has a lot of torque, sounds nice too. But I would like to have moderate power in my truck.
Confussed in Canada
az | | |
#72455 01/30/2007 6:45 AM | Joined: Dec 2004 Posts: 1,897 Shop Shark | | Shop Shark Joined: Dec 2004 Posts: 1,897 | Good engine. Lots of ways to squeeze it for more power. 270s and 302s are also great engines for a 1953, however they may be harder to find up in canada. Is your truck originally canadian? if so a 261 will be a bolt in swap. | | |
#72456 01/30/2007 5:42 PM | Joined: Feb 2004 Posts: 18 Junior Member | | Junior Member Joined: Feb 2004 Posts: 18 | yep, the 1953 gmc is a 9430 canadian truck.
az | | |
#72457 01/31/2007 5:32 AM | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy AIZ, do you know what your original engine was, if it was a GMC your front crossmember won't be correct for the Chev. 261. Canadian GMCs in the early 50s could have been powered by either type of engine, hope that helps. | | |
#72458 01/31/2007 10:27 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | What engine is in there now? That will tell you if your 261 is an exact bolt-in or not. If it has a 216 or 235 the mounts will bolt right up. If it has a 228, or 248 you will need to move the crossmember or you could bolt in a 270 or 302.
I have a stock 261 in my truck right now. It is nice but if you want a good power improvement put a hot cam and a better intake on it. If you want to go really wild you can do the Cadzilla mod at Inliners- you offset grind the crankshaft and fit Cadillac pistons to stroke it.
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A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#72459 01/31/2007 10:27 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Also, a '62 motor will need a short shaft water pump to fit in a '53.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
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