that's not factory piston. thats a TRW piston.Took this picture from another thread. Why do some factory big block pistons have this hole in the top?
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pistons are not cut on a lathe, are they? I thought they were slightly oval for expansion?
AJ some times your a douf.
Well I'm glad only some times
You guys got it all wrong, that hole is a starter hole for pre-ignition. I would put some 2-part epoxy in there to prevent that hole from exploding thru the bottom,cuz then you have to take everything apart to properly weld it it all up.
If yur not willing to do that then make sure the compression ratio is down below 8/1 and put the 2bbl back on.And stuff a big cam in there with a very-late closing intake.
Pre-ignition is usually immediately followed by detonation; and once it starts, it sets off a chain reaction, often ending in divorce and homelessness. Pretty soon you will be contemplating death because you hate chitting on the street and eating out of dumpsters.Not to mention your azz is on fire cuz you haven't had a bath in six months.
I'm telling ya, that hole is gonna be the death of ya.
For definitions and detailed explanations ; refer to page 101; where it clearly says ; lol.
my trw hemi pistons didn`t , but were heavy as heck.Don’t all TRW pistons have that hole?!?!
Probably a mistake (fat fingers on his phone)For whoever gave me the red X, go run the numbers, L2350 is the old TRW slugs. I have a set in my 67 383
For whoever gave me the red X, go run the numbers, L2350 is the old TRW slugs. I have a set in my 67 383
my trw hemi pistons didn`t , but were heavy as heck.
LOL Lon is a great guy. A hell of a transmission rebuilder too.Likopasta is the guilty bastard. Time for a 'net beat-down!
It's a Karman vortex ebb! That will promote vortices and distortion to the incoming air charge.
Says the frying pan....It's WAY more than that.
Are you guys saying if I drill a small hole in each piston I'll gain horsepower?..