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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: Apr 2012 Posts: 27 New Guy | | New Guy Joined: Apr 2012 Posts: 27 | I've got a 235 in my 49. Which Iline 6 will give me the most hp, while still being a direct bolt in?
It's not the weight of the load, that breaks your back. It's how you carry it.
| | | | | Joined: Feb 2004 Posts: 29,783 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,783 | The 261 engine, which was used in midsize and larger Chevy trucks from 54-61 will be the closest thing to a direct bolt-in you will find. The GMC 270 and 302 engines will be close, but they will require front motor mount modifications to accomodate the 2" of extra length and a relocation of the radiator forward a little if possible. The GMC engine is a direct bolt-up to the Chevy bellhousing, however.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Apr 2012 Posts: 27 New Guy | | New Guy Joined: Apr 2012 Posts: 27 | What about 292? I was looking at the below link. Certainly like the idea of hyd. lifters. http://rebuilt.net/Chevrolet_6_Cylinder_Engines.htm
It's not the weight of the load, that breaks your back. It's how you carry it.
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | The 292 would not be a direct bolt up. It would require a different bellhousing and motor mount would have to be fabricated.
Bill Burmeister
| | | | | Joined: Jan 2013 Posts: 603 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 603 | The GMC 270 and 302 are great engines. In the old days, all the round dirt track racers loved them.
57 GMC LCF 370 55 John Deere 40-W 59 John Deere 430-W 2000 GMC 4x4 56 John Deere 420-W Pix on Photobucket | | |
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