need a tune i called pcmless he said i need to kno my compression is there anyone out there tht has this set up??

something close this is all my info






Lt1 350 bored to a 355 UNDER 8,000 MILES ON RE BUILD
Heads ported and polished (flows: intake 278, exhaust 197)
CC Cam 230/242, .510 lift,113 lobe separation
Comp Cams Pro Magnum 1.6 roller rockers w/7/16" studs
Comp Cams 987 Dual Valve Springs
SI Silverline Series Valves,(2.00" intake and 1.97 Exhaust)
Eagle H beem connecting rods
JE Forged Nitrous Pistons
Crane Hardened Push Rods

Intake.
Ported Intake Runners to match Heads
K&N Cold Air Induction
Relocated Air Intake Temp Sensor
A/F Ratio Gauge (in piller pod)

Exhaust
Hooker Headers Long tubes.
3" Custom Made Y Pipe
Borla 3" Exhaust Sounds amazing.

Electrical
Custom Tuned Computer (Lt1 edit)
MSD RPM Activation Switch (with RPM pills)
Accell Super Coil
LT1 Scanmaster%"Tach w/ shift light (light used for NOS Activation)
NOS Automatic Bottle Opener

Fuel
FMS 30lbs. Injectors
NOS Nitrous System (Adjustable from 50-150 HP)
Powershot Nitrous, Fuel and Purge Solenoids
Bottle Heater
Bottle Warmer
New fuel pump

Transmission
Rebuilt Stock Automatic Transo Shift Kit w/ 3 washers installed UNDER 10,000 MILES ON RE BUILD
Hayden 24,000 Tranny Cooler
Tranny Temp Gauge (In Piller Pod)
PI VIG 3500 Stall Converter

Suspension
GMS lower Control Arms Relocation Brackets
GMS Rear Lower Control Arms
GMS Sub Frame Connectors (welded)
GMS Strut Tower Brace
Drive shaft loop
Rear end is out of an 02 SS that the guy told me he took out about 7,000 miles and has torsion locker with 4.10s



Brakes
Hurst Line Lock
up graded 02 rear brakes

 

Flat tops ? Gasket thickness ? Heads milled? Chamber cc. You need to have all this info for an answer.

 

I would assume with the work that was done to the heads that they were milled. Was the block decked and what pistons were used will make the most difference.

 

Here's a CR calculator...not enough info provided yet.

http://www.gtsparkplugs.com/CompRatioCalc.html

 

Even if the heads were milled can't make any guesses based on that because he hasn't said and probably doesn't know if the chambers were massaged.

Frankly given the amount of useless information he posted I am going to guess he bought the car modded and just gave us everything he had which happened to be nothing useful for this question.

I see three choices, contact the old owner/builder, tear it apart and find out, orfind a tuner to tune it in person so they can play with timing and just really figure out what the thing wants.

Having someone tune it in person is probably the best bet. I am NOT talking about a WOT dyno tune I am talking detailed part throttle work as well.