Building 396 lt1
 

This so far the build

3.875 crank forged
6.0 h beam forged forged
-34 pistons

Stock heads so far

Anyone know the what compression will be

can’t know without cc of your combustion chambers, head gasket thickness and deck height.

Well
 

The deck height very little is being taken. More say just even it up make it even and flat.. the heads should be 54.5 whatever stocks heads. The gasket I want keep this car around 8.8 to 9.0 as it will be running 16 pounds of boost


Sto I remember what deck height will be I know it will be hard to say

According to this calculator with a stock deck height you'd be right around 9:1 with a .040 head gasket:

http://www.wallaceracing.com/cr_test2.php

Would Happen to know what vavle size I should go with for optima power

Nnnnnnnnnnnope. I've never done a FI engine. Two blokes that have are Blackbirdws6 and ShownoMercy who are sometimes on this forum.

9.1 still little high maybe cometic has 50 inch gasket I want 8.8


The valves I. Running titiaum intake and stainless exhaust I just need to know what size I should buy to get all power possible

What your motor putting out

9.1 isnt high, I run 9.4.1 with LT4 heads and at 12lbs of boost my motor makes 806HP...

The piston I got are rated at 20 pounds they are diamond blow through pistons i got them gapped at 16 that's the reason why I want it little lower then 9.0 just for peace of mind plus it's going be street /strip car still running intercooled and stage 2 snow system oil cooler. Rated at 650 HP 160 pound injectors

I just need to know a good vavle size to go with
My t56 will probably blow up. But will worry about that when it does
500+ fuel pump

Also what what supercharger crank dampener I called ATI
they werent sure if it works with vortec super charger

Heads/cam 396. Nothing special.
Keep your quench as tight as possible. If you are wanting less CR then use a different piston or get the chambers worked over.
And yeah, this fuckin' guy knows some shit. :)

Yea I'm talking to Loyd on his trick flow heads ported for stroker blower app let him do the cam too

I have 1.7 rockers scropion hopefully Loyd can put the heads and bigger vavles where I like it

With that much boost, I would do a 383ci (maybe even a 355) before going with a 396ci.

But that's just me. :burn:

KW

I had a budget cast boosted 383 that went 137+mph in the 1/4 at 3850lb with stock (cleaned casting flash) heads with stock sized Manley valves. I was told a good 5 angle valve job was as important as valve size.
I'd just let Loyd decide. He is a master.