Posted by RGMartin on August 15, 2013 at 18:26:05 from (173.189.139.130):
In Reply to: 770 engine question. posted by 1030 tom on August 15, 2013 at 16:08:58:
Mine is making about 85 hp as a turbo 267, limiting the boost to 10 psi(exhaust is crystal clear once it is spooled up at any load). I am sure she will do more by letting it blow more, and adding fuel, but in the interest of longevity I limited it.
The 267 block can be converted to take the 336/504 sleeves by boring it out... $$$$, but will still be a small journal crank. Heads are different too as the valves are bigger in the bigger engines, but shouldn't be a big a problem with a turbo.
Compare the cost of parts as 336/504 parts were cheaper than 267/401 last I checked. The boring option may not be as expensive as it first seems.
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