1nasty86

iTrader: (63)

ive decided to pull all the turbo stuff of my car and go n/a. my question is is what is my compression with the stock 5.3 pistons and 243 heads with 0.045 cometic head gaskets.

1nasty86

iTrader: (63)

bump for some info! id do it myself but i have no clue what stock deck height and piston recession is on a 5.3

1nasty86

iTrader: (63)

just bought some .040 cometic head gaskets. what would be my compression now? i really dont want to shave my heads but 9.0 compression isnt enough for me. anybody have a clue?

chrs1313

iTrader: (24)

there are calculators online if you do a search in yahoo or google, some even have free drials that will get you in the ballpark

1nasty86

iTrader: (63)

well according to that mu compression should be 9.7 does this sound about right?

00MaroonZ28

iTrader: (3)

that sounds about right. IIR the stock compression on a 5.3 is 9.5:1 with bigger combustion chambers with thinner gaskets, it's prob right around there.

1nasty86

iTrader: (63)

is it possable to make 400 rwhp with around that compression with a big cam, fast 90, 243 heads, and a vig. 3600?

1nasty86

iTrader: (63)

what if i shaved my heads .020 how much would it increase compression and would i need to worry about clearances?

1nasty86

iTrader: (63)

bump for some info! i need my compression to be around 10.2 what would i have to shave off to accomplish that?

SOMbitch

iTrader: (8)

What are your cam specs???? That will determine how much you can mill.... I assume pretty mild since it came off a turbo build????

DSRE

iTrader: (7)

You'll need a 56cc chamber with. 045 head gaskets or 57cc chambers with the lowest quench you should run. 035 with cast pistons and. 040 gaskets, my 5.3 was. 005 outa the hole with 61cc heads and a 9cc dish stock, imho id use the 5.3. 862 heads, they work very well with boost

1nasty86

iTrader: (63)

well im going to a 224\228 cam. and what would going to 60cc get me?

1nasty86

iTrader: (63)

well i need to know asap what to cut off. if .006 equals 1cc then cutting .030 would give me a 59cc chamber and with in the 10.2 range. but what proplems would i run into? like cam clearances. my cams going to be a 224\228 .581\.588 and what about intake clearance with a fast 90? and am i going to need to grind my dowel pins?