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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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | There has been a lot of talk about heads for 235's and 261's here lately, but today I was at my mechanist and he mentioned that he had installed a couple of Toyota heads on 235's.
Of course he also mentioned using expensive connecting rods to keep the bottom end together, but I thought it was very interesting. He said it was necessary to drill and tap the block for the Toyota bolt pattern, but he made it sound like it was no big deal.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
From Wikipedia on 235:
Toyota built the similar 236-cubic-inch Toyota F engine from 1955 to 1974, although it used a modified head from the previous "stovebolt" engine.
| | | | | Joined: Feb 2004 Posts: 29,825 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,825 | The early Land Cruiser engines were almost clones of the 235. I've never done a side by side comparison, but it was not uncommon for Japanese manufacturers to copy other makes. A Datsun FairLady 1500 OHV 4 cylinder back in the late 1960's was such a close copy of the MGA 1500 that the heads would interchange.
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!
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| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | I seem to recall seeing the dimensions of that Toyota engine on a site once, and I'm pretty sure that it is actually a bit longer than a 235. Almost like it's a copy of the GMC instead of the Chevrolet. Don't quote me on that, though, as I could be mistaken. If I can remember/find where I saw that, I'll post it.
Bill Burmeister
| | | | | Joined: Jan 2014 Posts: 3,689 'Bolter | | 'Bolter Joined: Jan 2014 Posts: 3,689 | Curious...
What would be the point of that? Some advantage of the Toyota head?
1951 3100
| | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | The Toyota head is a cross flow head giving better high RPM flow.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | How did he move the combustion chambers closer together? | | |
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