joker_01z28

iTrader: (14)

planning on building a turboed 408, with trick flow 225cc heads what pistons should be used? also what kind of head gaskets should I get? thanks.

mark21742

Definately go forged pistons and I'd spend the money on a great set of rods too.

I'm running Mahle forged pistons in my 408

Sales4@Texas-Speed

iTrader: (4)

I would recommend looking into either Diamond or Wiseco forged pistons. They both have a very tough forging that can handle a lot of power. Set up with a steel top ring set and you can't go wrong.

joker_01z28

iTrader: (14)

was thinkin bout weisco pistion but dont know what "kind" like flat top ot dished and to what size. rods will be Callies CompStar LS 6.125" HD I-Beam Forged Connecting Rods

bww3588

iTrader: (49)

well, answer these questions and see if someone can direct you toward a piston

what cam?
what compression ratio are you shooting for?
nitrous?
blown?
power goals?
whats the cc on the heads?

joker_01z28

iTrader: (14)

[QUOTE=bww3588;13326911]well, answer these questions and see if someone can direct you toward a piston

what cam?234/242, .598"/.610", 115 LSA
what compression ratio are you shooting for? 9 to 1
nitrous?no
blown? twin turbo
power goals?decent on the street and be deep 9s in the 1/4
whats the cc on the heads?trick flow 225cc

Sales4@Texas-Speed

iTrader: (4)

We need to know what size the combustion chamber is on the heads in order to figure out what size dish you need. 225cc is the intake runner size.

rich5368

iTrader: (2)

70cc heads with a .040 gasket and ~4cc dish should put him about 9:1 right?

bww3588

iTrader: (49)

no, 11.5

bww3588

iTrader: (49)

with 70cc heads, .040 gasket, .005 negative deck he would need a 26cc dish to hav 9:1

KCS

iTrader: (20)

With Wiseco's K456X3 pistons (20cc dish), 0 deck, a 70cc chamber and a .051" MLS gasket, you would hit ~9.3:1.

rich5368

iTrader: (2)

Ahh. I'm learning

bww3588

iTrader: (49)

you wont get zero deck with thoes pistons. they will be .005 out of the hole.

KCS

iTrader: (20)

Contrary to what Wiseco has on their catalog, I personally have not run into a 6.0L block with a 9.230" deck height. I'm pretty confident I've set up several blocks to 9.23x" decks in some cases for a 0 deck.

If he does have one of these 9.230" deck blocks, he can always shave .005" off of the piston, or use a 6.098" rod. You can get a zero deck.

joker_01z28

iTrader: (14)

heads Max valve lift: .600"
Combustion Chamber: 65cc
Intake Valve Diameter: 2.055 in.
Exhaust Valve Diameter: 1.575 in.
Valve Angle: 13.5°, im new to some of this stuff, whats with the zero deck height stuff?

joker_01z28

iTrader: (14)

with those heads, what kida pistons on Callies I-Beam Connecting Rods 6.125, and what head gaskets? is there a good better best as far as gaskets?

KCS

iTrader: (20)

Zero deck means the piston top is even with the deck when it's all the way up, or TDC. If it's "out of the hole", it's above the deck, and "in the hole" is below the deck.

joker_01z28

iTrader: (14)

with those heads what would be recommended? how dou you figure out comp ratio?

bww3588

iTrader: (49)

all of the truck blocks (6.0 5.3/4.8) that i have run into have all had 9.23 deck heights. this was measured on a CNC machine here at school. i machined 1 6.0 block and 2 5.3 blocks as well as 1 LS1 block and the only one that had a 9.24 deck height was the LS1 block....i have also heard that a lot of the truck blocks have the 9.24 height as well. i guess the only way is to measure.

KCS

iTrader: (20)

The ones I saw were new unseasoned blocks from GM/Scoggin Dickey, maybe the ones that make it into vehicles are cut to 9.230"?