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I had hyper pistons once. Got 7 good ones, look like new, 3.94 bore. Now I have a sleeve and ross. My ross were custom order. Hard to get a 318 bore piston, 9.5-1, for 302 heads. Lol. Wiseco has always made great pistons.

I got two a year ago. Nobody buys them anymore.. Because old tech must be bad tech, even tho i'll put my money on a small port offey vs any dual plane EB, weiand DP manifold. Doesn't hurt to call.

I bet summit has a small port offenhauser dual port. Old tech, but great mpg vs power. Put a 500 edelbrock on it, a new chain, and enjoy.

If you cruise on a cloudy day with a 160f thermostat, you'll have the same problem with any piston-bore.

Turbo was an option, just not from Chrysler. Just like the 427 industriAl ford turbo. Both show up in busses. Man, old thread lol

My 390 has Ross pistons, 50,000 miles of WOT and they don't make noise. Sounds like yours were too loose to start with. It would have to be real bad to scuff tho. What temp thermostat do you run.

I don't like the idea of turning down a cast crank........... But, I guess done right....... Why not get stroker crank?

I can drill and tap the rocker feed holes, right? No special block off?

Stroker is right, my pistons were 90 each. I went with stock floater 318 rods, because they are the lightest/strongest Mopar made, IMO. I think a 360 will make the power the 390 will, but it will not be *POWER* likethe 390. Hell, my 390 is a small port motor, I'll post a vid one day of a dry...

Gotcha...... I think I'm going to dig out the sioux........ That sounds like too much work for a kids first truck!

If I had a set of good magnumheads, and a LA 318 with a couple burned valves............. What would it take to put them together.

No, they didn't. They were fine for a 273, and 318, IF they had've built a 4bbl 318, and put effort into making them build power, other than marine, the 327 would've been outpowered, with the 318 using the small port heads..(factory speaking).. You have to remember, we had 361's, and 383's in...

Posters above said use longer rods.....

Pulease....... GM heads are better? Flow? So what, the geometry is horrible, the valve angle is horrible, the combustion chamber is horrible. GM SB heads are the ultimate example as to why you CAN'T race a flow bench!

Wait, did someone say stroke it and use longer rods? How in the hell is that going to compensate anything?

I meant longer an d typed shorter....... i fogot about nothing my cylinder bores, it was no biggie. Shorter rods just takes away from the beauty of a MOPAR engine..... Use stock length rods!

And it's all American ISKY quality.

Longer stroke would be easier to drift, a more even, predictable power band.........

That sucks, ISKY LOVES to talk and grind cams.

Hey guys, you don't need shorter rods, mine are stock 68 floating 318 rods. They raise the pin height in the piston.

I have an Eagle cast crank, stock floater rods, and ROSS pistons, I had KB pistons, but they don't like WOT throttle for a few minutes at a time, but for you, you would be fine. had to cut a little on the windage tray for the 4" crank, but that's it.

Yeah, he's right, the straw part.

Don't stroke it to 344, stroke it to 396, it's cheaper! (And will knock your socks off!)

That's cuz you gots china, I mean, COMP cams in your favorites........ :sign3: I gots two right here..... One is in my solid lift 390, builds way more midrange than the 268/276 voodoo I took out, funny huh? So, I am going to cookie cut two cams I have used more than once each, on 318's, and...

Is it solid lift? Don't go cookie cutting cams for your 273.

Get a kit, cast crank, pistons, to make a 390. 4" stroke is FUN!

I did the same thing using "approved" comp springs........ Ten thousand miles later I couldn't get 5K out of her...... UGH Lunati knows their **** when it comes to what components they need, but, to most here with street toys, 10K is like 3 years.

They like you!

I forgot you were the same guy that said Hughes didn't know what they were talking about.............

Simply Without going into any overlap discussion..... IF you move your intake lobe closer to the EX, you are closing the intake valve sooner into the compression stroke. (think cam advance) This creates less compression bleed off at low RPM. Moving the lobes closer together, means the EX is...