Happiness is finding a 1966 289 block with less than 50,000 verified miles on it.
Jim

 

YEA!!

come on guys, who sucked all the hot rod out of you guys.... wait a minute... that came out wrong...

The chevy guys do it all the time with no problems, are you all telling me Ford guys don't bore their blocks?!?

For the record the 302 going into my 'stang is bored +.040 and I have tentative plans to make it a stroker sometime down the road.

 

A289overheats a bit on a 0.020 bore, overheats more on a 0.030 bore, and don't like 0.040 boring (am I boring you). At 0.060, you better run it in a water tank cause it will need it.
Jim
And I don't really care what the bow tie crowd does.

 

My windsor is bored .040 over. The machine shop that professionally builds race engines and all types of engines in general say that the overheating after .030 over is a myth. They bore to .060 over all the time without any problems and with full confidence. I trust people that were currently rebuilding a damaged hemi block (440 I believe)

 

ok well what is it to stroke a motor... what does that intale

 

New crank/rods/pistons, plus the money to get it balanced, strokers are more difficult to balance, and if you don't it'll vibrate itself to death. I like 302's with boost or juice myself. Spend the money on good internals and some decent heads and then slap a blower on it and drive around every day with a500hp 302

 

I think blowers are very cool, but also very expensive to implement,, I don't really care for NOS, because a simple parts failure means your engines ***, andin short order,plus, the ricer crowd is justtoo into it to want to do this,,, (for ricer applications NOS is pronounced "Knawaus")....

When I was a kid,strokingmost engineswere simply out of reach financially, nowthey arean economically viable option....If an engineis gettinga new crank and rods, it can often be stroked for abouttwo to fourhundred dollars more than going back stock.... crazy...

Kits are available including pistons, rings, rods, crank, and bearings for well under a thousand, + balancing for $200, (some kits are already balanced and include flywheel and balancer), and bam...

http://cgi.ebay.com/ebaymotors/BUDGE...spagenameZWD1V

 

eep, alot of guys bore for a bigger motor, or to clean up the cylinder walls like already stated. A big thing and a reason people do it to brand new blocks is it unshrouds the intake valve. On motors this small, when the intake opens the enters the intake valve and slams into the cylinder wall. Boring gives it a bit more room, not much, but it helps.
As far as the limit, only a good machinist can tell you for sure. It's not the size of the bore that makes a car over heat, it the remaining material left in the cylinder wall, or the lack there of that cause s it to over heat. He'll tell you if you have enough. Some block cans go .060, some can't. Aftermarket blocks are great. Got a turbo kit to build for a 900hp Maverick. He's starting out with a .125 bore, and can go more than that later if needed.

 

A good set of aftermarket heads solve a lot of the shrouding problems associated with stock heads. I prefer to keep the boring to an absolute minimum, just enough to clean the cylinder up if it's needed.

 

"Bored over 40" ........... HMMM, at first I thought I logged onto the wrong forum. It sounds kinda like a singles forum......