brokenbird

iTrader: (5)

Im building a 355 and im looking for around 11.5-11.8 comp ported stock heads with a cc503 or a custom grind and have a hidden nos direct port under the manifold and plan to do around 200 shot it will have 5.7 h beam eagle so any opinions are welcome on piston choice

djjab57

iTrader: (17)

I have the Mahle forged in my new 355, I went with the 6 inch though. I set the rings up for a 200 shot. I dont know much about the speed pro's but im aware there is several people on here that use them.And i guess since your spraying you are getting the forged pistons ?

djjab57

iTrader: (17)

Also for a custon grid cam i would call a person such as Lloyd Elliot talk to him about your build what kind of #'s your looking for and he will custom grid you a cam that will go great with your set up

Lloyd Elliot 972-617-5671

RamAir95TA

iTrader: (2)

Can't go wrong with Mahle, especially if GM used them on every LT1 ever made.

brokenbird

iTrader: (5)

if it makes 350-360 on the motor ill be happy its just to get me by till i finish my turbo build since my stock short block bit the big one a few weeks ago

96lt1m6

iTrader: (31)

I have had speed pro pistons in quite a few motors, N/A also the are pretty strong! However, none are strong enough to survive a lot of detonation. Ring lands break etc....its all in the tune!
Mahle pistons are lighter than the Speed Pro LW series....I would say if money is tight a set of 2256s are in order but you are lookin into BOOST so the piston i would suggest would be the L2441F dished piston which would be fine with stock Lt1 heads(compression wise)

Nothing wrong with the quality of MAHLE pistons at all!

slomarao

iTrader: (6)

speedpro's are what Ive been told for N20. Lots of guys hit big shots on them with no issues. Im putting those in my 357.

brokenbird

iTrader: (5)

yeah this motor is only seeing the bottle and a completely different motor will be seeing the boost lol

SoxXpupPeT

iTrader: (34)

I quite like my forged speed pro's! and the price was right too

slomarao

iTrader: (6)

Call Llyod for the cam, you could get something that would make 10hp more than that 503 and have the same street manners/ shift point/ etc.

I just got a custom one i picked out. 226/234 565.565 111 lsa

I dont have much work in my heads and intake but I plan to shift at 6350 with it.

brokenbird

iTrader: (5)

i plan on calling him when its long blocked but if i find a good deal on something in between then and now ill get it, im not too worried about what it makes on the motor cause the bottle will solve that with my nano

slomarao

iTrader: (6)

get a N20 grind than, one of the XE blower grinds would work well.

1993 z28 f1

iTrader: (6)

Hey:

Look at forged Wiseco or TRWs, they can be found priced right too.

Dub

96lt1m6

iTrader: (31)

Speed Pro bought TRW many years ago

1993 z28 f1

iTrader: (6)

Hey:

Yes I know that, but many new sets of 23* TRW Power Forged pistons are still out there and can be had for a very reasonable price when found for a 030 over, 5.7 rod and 3.48 stroke, @ 11.0-12.5 compression. they are on ebay and lots of circle track parts flyers all the time.

Ive seen the last version NIB before the Speed Pro buy out, in the config the OP needs sell for $200 USD for a set of 8 PF pistons with ceramic coating applied to the dome, with super forged pins, spiral clips, and flycut before coated, 11.5 comp, a few weeks ago. So they are still out there. I wanted to buy them for a good stock type rebuild, but somebody beat me to it. Heck the ceramic coating cost that. They may be a few years old but are good pistons if found new like that.

Dub

355z28

iTrader: (8)

I run the CP Bullet pistons from Carrillo. They are very similiar in price compared to mahles. They're made out of a different material that handles nitrous better.

Talk to Corey at Clayton Racing. He'll set you up.

brokenbird

iTrader: (5)

i was even looking at probe but just dont know about them

Corey @ Clayton Racing

speedpro has been having huge quality control issues. Check out the new CP bullet series pistons, or if they are a little too expensive do the Mahle's and dont look back.

*02WS6TURK*

iTrader: (13)

If you have the money then go with the Mahle's. With that said, I ran the Speedpro out of my past 94 Z28 w/ zero issues.

brokenbird

iTrader: (5)

do they have coated skirts and can you pm me a price for both set with rings