I just finished this 2 weeks ago and haven't had a chance ot get to a dyno, anyone wanna guess??
-LT4 heads
-LT4 intake
-LT4 extreme duty timing chain
-Comp Cams 'R' Series lifters
-Comp Cams xe 224/230 w/.536/.544 lift 112lsa
-Crane Gold 1.6 Self aligning roller rockers
-Crane dual coil .600 lift springs
-K&N CAI
-ZO6 MAF
-Trick Flow ceramic coated intake elbow
-52mm BBK throttle body
-160 thermostat
-Edelbrock shorty headers
-no catalytic converter
-flowmaster muffler
-New vented opti spark
-MSD 8.5mm superconutor wires
-AC Delco double platinum spark plugs
-New water pump
-LT4 knock module
-PCMforless

 

This is no way to treat a first time poster. Come on guys. $10 to anyone who gets it right.

 

i'd say 380 flywheel, 330 rear wheel.

 

im gonna say 355 at the wheels

 

I think you are close. With a good tune it could be a little more.

 

A4 of M6?

 

It's an M6. I was hoping for around 350rwhp.

 

I wouldn't expect that with out any porting done to the heads.

 

I am going to say 340-345hp to the wheels.

 

I've seen 4 LT1s with the LT4 conversion kit and hotcam dyno about 355rwhp with the M6 (tuned). With the XE 224/230 and 1.6s i'll step out on a limb here and say you'll get close to 365rwhp with a tune. If not 370 since there are quite a few members on here getting about 340rwhp with that cam on stock LT1 heads. The LT4 heads really are worth about 30rwhp over the stockers with a fatter torque curve in the higher rpms due to the larger ports.

 

Why spend all that money and use a flowmaster muffler?

 

The flowmaster has been on my car since I first got it. What's wrong with the flowmaster? What should I go with?

 

Too loud and doesn't flow as good as what else is out there. Get a hooker aeroflow. Great sound and not that loudness the flowmaster has.

 

It is so negligible it doesn't even matter. Go with what you like the sound of.

 

Yea I agree, its what you like and not what everyone else does. I didnt mean to enforce that the aeroflow was better or anything. I find flow masters way too loud for my taste but if he likes em .