Flamed350

iTrader: (3)

That's right guys, got it dynoed, and it put down a whopping 322 hp and 281 tq. Those numbers are correct, and im not lying. I think its the strongest it has every been, and yet im mad, disgusted, and ready to sell the pos.

The air/fuel looked good, timing was really close. The rockers adjusted, and it just would not pull. It's got a miss from i dont know where. the graph was all over the place. the cam fell flat on its face at about 6100. the car would lose power then just all of a sudden regain it. it would basically bog down, then take off. once the car is held at a constant rpm it bogged down then regained it. i know its hard to understand but it is also hard to explain. the car since its fuel is right sounds like the hotcam. the cc306 sounded better to me, my brother thinks so to. anyway, they are going to run a compression check on all cylinders then we'll go from there. its a wonderful day to be a lt1 owner.

i changed to stage 3 heads and put in the xe236/242. it doesnt look like there's vavle float either. just dont know...any ideas.

BlkLT1WS6

322? H/C? is that a joke u should make 350 cam only!

GIZMO

iTrader: (8)

Bad ground?

aboatguy

You say it has a miss, from you don't know where. I will state the obvious, somethings not right. Troubleshoot and fix the miss, and I bet your numbers shoot up!

Mike

MattZ28

iTrader: (4)

And you shouldn't be posting here. Please show me a stalled auto making 350 cam only.

Anyways, take it to the track dude. Dyno #s in a stalled auto don't mean jack **** - I dyno'd 314rwhp and still went 12.2 @ 109.

Flamed350

iTrader: (3)

considering i dynoed 340 before, and there's an obvisous miss somewhere.

blkchevyz

yeah somethings up, that torque is way off

i would check all the normal stuff, plug wires, fuel pressure...

have you had it tuned yet?

also how's the transmission feeling

Flamed350

iTrader: (3)

tranny feels fine, has about 2000 miles on it. they were in the process of tuning it, but couldnt figure out the miss. like i said it would bog down when giving gas, then just take off and go. acts like it losing power then regaining. plug wires seemed fine. fuel looked good.

Flamed350

iTrader: (3)

here is the dyno graph guys, what you think.

MaxFubar

how's the fuel pump/filter? they in good shape? new even? sounds like you might be having fuel delivery problems.

borninatransam

iTrader: (4)

when you say you give it gas and it bogs down do you mean when you first start to mash the gas or later on? if its when you first push the gas i would check the TPS voltage and see if it fallin off for some reason. you mite as well do it anyway. you mite find your problem there.

TwoFast4Lv

iTrader: (8)

346 cam only bolt ons here

I would be checking all the basics right down to the timing chain.

Phil's stuff usually works great!

zlover129

iTrader: (10)

yea, it's possible to get around 350 with a cam, but thats a pretty big cam, also Dyno numbers with a stall are low, but just wait till you take it to the track, a 6 speed car could dyno 50 more horses with the same setup, but at the track they'll be pretty even (considering the 6 speed has a good driver). Your torque seems really low, you should normally see a little more trq then hp with these motors, thats what is bothering me the most, also that power curve doesnt look all that good, but I still don't understand the low trq levels.

Flamed350

iTrader: (3)

new walpro255 pump, with new 30injectors. fuel filter is a couple years old.

it will bog at both time, when i first give it gas, and just holding it at a rpm. just all of a sudden it will lose power and slow, then just regain it and go. i have not drove it this is just on the dyno. and when you give it gas or mash it, it almost sounds like it detonating.

borninatransam

iTrader: (4)

another thought. when was the opti cap and rotor replaced? same thing with the coil. if the coil is old then when you rev on it, it mite be trying to get more voltage than what it can actually supply. check both. but i replaced the opti on mine cause it had a crack in it and was making the opti arch off. but i kinda feel like the problem mite lie somewhere with the electrical

96SCTA

Did the car run fine before u had ur heads and cam work done.?

Flamed350

iTrader: (3)

yes the car was fine when before i changed h/c again.

TwoFast4Lv

iTrader: (8)

OK I have one for you to check that I have had issues with lately.

Hook up a scanner and check all your Temp sensors. If they are not working they will read -40*. When this happens it will pour fuel like crazy into the engine.

I have a car right now that has a bad sensor. had I not used a good Scan tool on it I would have missed the temp sensor tripping out! With 42Lph injectors the Temp Sensor reading -40 is enough to kill the engine It will buck and snort and go crazy!

I have had IAT and ECT sensors do simular things MY shop car would not even start with out the temp sensor and IAT being plugged in

Some thing to check

Flamed350

iTrader: (3)

i'll try that, thanks

Old Geezer

iTrader: (3)

2 yr old fuel filter??
The A/F on the dyno sheet looks to me that the engine is steadily losing fuel. Starts at 12:1, and steadily heads towards 14:1??
I'd suggest you install a GOOD quality fuel press gauge, and watch it, as the engine goes thru the rpm range.[loaded]