Grovedawg



I just went through all this with my 272. My engine rebuilder, whom I trust, sonic tested my block and suggest we only go 30 over...about to a 283. Yes, we could have gone bigger but he said he could give me more hp. by doing things to the engine...porting, better cam, improving rockers, improving oiling..improving valves and seats etc.



He suggested it was not economical to go to bigger pistons, larger bore etc. He had no problems getting all the parts he needed shipped next day for my 272.



Good luck.



Gt




Gordie T           Long Point, Ontario

I'm definitely not opposed to using a 292, but I kind of like the idea of using the engine it was born with. Maybe that's a little wierd, but, I think it's kinda cool.



But, back to the point. There is a differnce in the two blocks then?

Heber City, UT (15 mins outside of Park City- basically it's in the mountains)

55 Effie

My first impression is why not start out with a 292 block in the first place. There are plenty of them around and then you will have plenty of wall thickness in case you want to get more radical with cam and carburetion.

Kenneth

Fredricksburg, Texas

A little history about what I have and want to do: I've got a 272 that I'd like to bore out at least to .030 or .060 over the size of a 292, add a ground 312 crank with new rods and pistons. Final bore is going to be close to 3.810.



Now I know that the bores are different between the 272 and 292. The 272 is bored to 3.62 and the 292 has a larger bore of 3.75. Otherwise the stroke is the same- so, same crank, journals and what not. Is there any difference between the two blocks other than bore? I'd like to know if the 272 is the same block as the 292, and can handle the same over bore work that a 292 gets when it's bored and stroked out.



I've got a machine shop that's going to sonic the walls, to determine if it was offset ground from the factory and can handle the .130 to .140 over a stock 272 bore. I'm sure all of the supreme beings have seen this question before, but I'm still a small little pleb. Thanks for the help guys.

Heber City, UT (15 mins outside of Park City- basically it's in the mountains)

55 Effie