383 lt1
.030 over 2 bolt main block
Eagle forged Crank
Scat forged 5.7 Rods
Ross dished forged pistons
Comp 224/230 cam
Trick flow 195cc heads revalved with manley valves
Ported lt1 intake
37lb/hr injectors
Holley 58mm TB
Stock water pump
New opti

Going thru a built 4l60e with 3500 stall and a 9 inch

Any ways it put down 325hp/343tq at RPM

What is holding the power back on this car, Some seem to think its the knock module. its not mine but looking to get this car so some help would be greatly appreciated
Thanks to anyone with info

 

whats the compression ration and has the car been tuned

 

Should be makin more than that. What kind of stall is it. If you were runnin a TH400 I would say that would be low. My good friend made 420 rwhp through 6 speed then he put a TH400 in the car and it put down 385 rwhp.

With your mods you should be around 400 through the auto and 9 inch,
I would look into your converter. By the way **** a dyno take it to the track and look at your mph and weight of the car.

 

With the aftermarket heads and dished pistons I would say the CR is low and the motor is just a dog. Have the heads been shaved what was the combustion chamber on them and the piston volume?

 

low compression...

 

also does the car have long tubes, exhaust and 1.6rr.

 

Yeah what's the compression? Mail-order tune or dyno tune? Was the knock sensor desensitized in the tune?

This past I summer I went to the track and ran consistent late 11's all day. I then put the car on a local dynojet for ***** and giggles and it put down only 350rwhp. I wouldn't get caught up on numbers. Keep in mind if the pulls were made with the stall unlocked then that right there is going to put out lower numbers. Also remember that 9 inch isn't helping any either. If the car is optimized meaning the compression is where it should be and the car is dyno tuned then take it to the track and see how it does and chances are it will move out good.

 

i think he said the CR is 10.85.1 it has pace setter long tubes 1.6 comp pro mag RRs i think it may still have the stock knock module and it has a TCI 3500 stall and it was dynod at RPM By ryan he said

 

It could be all three - the low compression, the TCI stall(inefficient), and the knock sensor.

You need to datalog it first to see if its pulling timing.

 

I agree. The compression isn't low but it could be alot higher. Ask the tuner if he desensitized your knock sensor in the tune because if it is then it doesn't matter whether you have an LT1 or LT4 knock module. Like said you need to datalog the car and see if it's pulling timing due to false knock.

 

the guy that ownes the car said it pulled 9* at idle and 17* at WOT I have no idea what the degree should be at

 

im betting on low compression. mine comes out to around 9.8:1 with my trick flows, gaskets, and -7cc flat tops. curious what dish the pistons are, head gasket thickness, etc. should be making way more power than that even if it was low comp though.

 

It's a poor comination, it's never going to run. Should have around 36 degrees advance above 2800 RPM. 17 degrees sounds like some false knock retard, but it still won't be fast with that fixed.

 

just got the real CR he said it was about 10.1.1.

 

Any way you can get the heads chamber size, headgaskets used and the piston dish CC?

 

also stock gaskets were used

 

There's no way that the lack of compression alone should be costing this guy 60+ HP, especially if it's only 10.1:1. There are many other factors at work here (but it goes without saying that such a low compression motor is a very poorly thought out build).

Was this on a Mustang dyno or Dynojet?

 

i dont know what ever they have at RPM

 

Yeah something wrong there man. If you were looking to buy I wouldn't unless it's an absolute steal. Lot's of guys put down more than that in a stock cubed cam only car. The CC503 cam in there has been known to throw 330rwhp+ in stock headed, stock cubed LT1's. Even through an auto with a 9 inch that's way low. Ed's right it sounds like a turd.

 

Thoses heads are 64cc chambers and if it is a dished piston with stock gaskets I'd bet you static is less than 10 to 1 and the dynamic would be way down around 9.3 to 1
What size cc is the piston? alot of those pistons are dished from -5 to -20cc's need to know the piston size.
Your dynamic is what realy matters though and it is usually lower than the static if I remember right.
First thing to check would be the rockers and pushrod size to make sure the things are sized and setup right other wise they could be holding the valves open. Pull one and check the valve stem wear. Should be centered.
To be honest it really sounds like it needs a blower to maximize the build that was done. I'd bet that thing would put down about 500+ at the wheels running a blower setup on it.