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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Feb 2009 Posts: 2 New Guy | | New Guy Joined: Feb 2009 Posts: 2 | I'm new in STOVEBOLT, my question is, i have a 1953, 5 window 3100 chev. truck, but the original motor is shot, can i fit a 400cc motor to replace the one that i have, and if i have to modefied any thing, trying to keep the 3 speed trany, original as much as i can, please reply.
(This is before i buy the motor)
Hector
| | | | | Joined: Mar 2007 Posts: 4,217 Moderator | | Moderator Joined: Mar 2007 Posts: 4,217 | Welcome Hector. I'm assuming your engine is a 400 ci, not cc. I think there are several types of 400's out there. Not likely an easy swap, but I'll let more experienced guys explain it. | | | | | Joined: Feb 2014 Posts: 46 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2014 Posts: 46 | welcome, the 400 motor is a good choice.chev being the smallest,size is compact and will go fairly easy, v8 crossmember is a must for motormounts.pontiac or olds will fit but needs more work,relocate stearing box ect.years ago my dad fit a 303 olds in 53 gmc 1/2 ton.he made exhaust manifold for left side to clear stearing box.best of luck with your bolt | | | | | Joined: Apr 2005 Posts: 7,441 Bolter | | Bolter Joined: Apr 2005 Posts: 7,441 | Not likely you will be able to keep any of the drive train original. Certainly not the enclosed drive shaft. With enough money and skills or a good fabricator anything can be put into your truck. Open your wallet and have at it.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
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| | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | Its not hard to put in a V8 but certain changes are needed and depending on your access to other "stuff". I despised the crossmember for motor mounts. Buy the ones from JimCarter/Chassis Engineering and make a nice neat clean job. Locate them on the chassis per instructions and that V8 will fit like a glove. ...and yes, I'd plan on moving the steering box outside the chassis and its not that hard either if you follow the instructions from a couple places. ...if you go V8 save your self some time and money by going ahead and putting in a 700R4 Tranny. Take your time and make yourself a neat smooth ride.....and yes, change out the rearend. Nothing to it  (you can check out my photobucket link for some pics) | | |
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