Hello im thinking of buying a nice 454 engine but it is on a .060 bore and was wondering if i will need to add something to cool engine more than a stock bore and if i need to rebore in future what would i need to do so i can keep this engine because i was looking for something of a .030 bore max so i could rebore down the road if needed. I will be driving on street about 2500 miles a year and hate the thoughts of last bore on engine but ???? Thanks

I run a 468 (454 + .060) in my car, and run nothing special as far as cooling. I run a stock type radiator (non-aluminum), two electric fans that are always on, and a 160* thermostat. Car never goes about 180* in summer traffic. Even when I'm beating on it, the car will never go about maybe 190*.

As far as having another overbore, the block should be checked to be certain, but I have heard of guys going further then .060. Isn't a 505 a 454 bored .125 if my math is correct (which it usually isn't)?

Chris

A good 454 could be bored out past .100 over if the block checks out. My BBC ran just fine with an 8" converter and 4.10 gears. Keep in mind this was in Texas with an aluminum radiator and electric fans. There weren't many long rides but I drove and never trailered it to or from the track. No cooling problems.

I want to thank you guys for the info and i think i will buy this and go on, my main concern was the bore thanks alot Tom

I am running a 468 as my engine when I got it was already .040 over and had smog pistons (yuch) in it. Punched it out to .060. Reworked the heads put a nice cam in it AND some 10.5:1 pistons (yea!!) in it. Runs great. I am running a stock 4 core brass radiator (without a fan shroud) no over heating or even coolant puking problems. I have no gauges at this time so I can't tell you temps. 180 deg t-stat.

Thanks for info

As always good info! :)

If possible, have the block "sonic tested". I did on my 396/402. It checks the cylinder walls for their ability to handle the heat, before you spend the money!

One block can test different from another with the same bore. Mine is now a 396 .70 over (or 402 .40 over) and runs at 180 degrees all the time.

A machine shop should be able to do it for about $50 bucks