i am in the middle of my build but wanted to know whats a good cam to go with N/A? engine has flat top pistons and i will be going with ls3 heads( i chose these heads to leave room to grow down the road ), already has a 4c converter from circle d and 4.10 with posi behind it. any recommendations on what cams to go with ?

 

What is the truck setup and CR? What kinda rpm do you wanna spin and what stall speed is a 4C?

 

well guys my plans for my build have changed i got some flat top pistons in there but now i will be going with some milled .30 799 heads with a 228/232 cam. my question now is what will my compression be with the milled heads?

 

There are still a ton of variables on the table. Are they ported? Was the chamber opened up? What gaskets? Do you know the height of the piston in relation to the deck?

Taking a complete shot in the dark without knowing anything I would say you're approaching 11.5:1.

 

heads were not ported just milled.30 as of head gasket they are .51 (stock head gaskets)

 

Still need to know piston height in relation to the block as well as does it have valve reliefs and if so how much?

 

Your measurements listed are a little off...

Stock gaskets are .051 . What you listed would be 1/2 inch
They must have been milled .030 . What you listed would be just under 3/8 of an inch.


If they were milled .030, Does that mean there 60 CC combustion chambers now?

Just a guess using .006 to 1 CC. Factory 799's are around 65 CC

We need accurate numbers in order to properly calculate the compression ratio.

 

As far as piston height i am not sure since the machine shop did all the short block i know for a fact they are ls2 rods and pistons are flat tops no valve reliefs on them.The head gaskets that machine shop gave me were enginetech HC364-A. I googled the part number and i got .51 thickness. this is a budget build so no forged parts were installed in build.

 

build consist of
03 lq4 bored.30
799s milled.30 with valve job
flat top pistons on ls2 rods
228/232 .588 .595 112 lsa
NNBS intake with xlink

 

Thanks, that's helpful!

Do you know if they machined the deck at all???