why so little power??

[stprorolla49]

my friend (9eightGTEE) is selling his car to buy a 90 LX hatch with a 347....the motor is a summit block, scat steel crank, forged pistons and rods, afr 185 heads, lunati cam, edelbrock performer II intake...etc etc.....and when the previous ownder to this owner dynoed it, it only made 322 rwhp, and 352 rwtq at larocca's performance or a dynojet.....this is WITH a dyno tune and chip.....i dont understand why hes not making over 400hp to the wheels at least.....he is running kinda rich, and he was gettin a slight ping on 94 octane in the 100+ degree weather, so i said why dont u back down on the timing a little, so you can also back off on the fuel pressure a little, and he was like something isnt right here......its been bothering me and its not even my car.......

 

[mackey]

Which cam.

 

[stprorolla49]

Which cam.

im not sure......its a lunati, and it seemed to run ok...i also dont think that teh cam is eating up like 60 hp or so.......ill get teh specs from him as soon as i can get ahold of him.........

 

[stprorolla49]

anyone else?

 

[bimmertech]

prolly cuz it's a 347 and not 331
everyone knows that they are poor rod ratio,oil burnin slugs.

 

[stang2004]

hey mike.... you really gotta get all the info straight before posting,,, ill fill in the stuff you neglected

she made 352 at the wheels and nearly 400lbs of torque got the dyno graphs to prove it. if you do the math thats over 400 horses at the crank.

there are still restrictions on the car,,, probably could use 205's, and a larger cam profile, and a different intake, or have this one ported or something. But afterall she is a street car, not a race car.

running on the stock tune (for the 302) she is making 328 and 382.

i could change the timing and lower the fuel pressure if i had a timing light. however right now she's running fine and i dont want to go messing with stuff, id rather have a shop tune her since they know alot more then i do

 

[stang2004]

prolly cuz it's a 347 and not 331
everyone knows that they are poor rod ratio,oil burnin slugs.

slug? want to race


oil burning? she's due for an oil change soon, and she's right where she should be on the dipstick

 

[bimmertech]

slug? want to race


oil burning? she's due for an oil change soon, and she's right where she should be on the dipstick

just jokin around here, calm down. just sayin that someone always turns these threads into a big 331vs347 debate, i'm just adding fuel to the fire
is the engine in question yours?

 

[stang2004]

just jokin around here, calm down. just sayin that someone always turns these threads into a big 331vs347 debate, i'm just adding fuel to the fire
is the engine in question yours?

haha i was just kiddin around man

yea he's talkin about my car. I sadly have to sell her, cant afford to keep her with the gas, my bills, and school. Im looking to get an explorer instead of another stang, and then once im done with college, grab a new one. im goin to miss this car. she's incredible

 

[bimmertech]

sounds like the numbers are spot on from what i've seen(i'm no where near an expert) some people just think hp grows on trees. with that kind of torque it is no doubt an enjoyable street car.

 

[stprorolla49]

hey mike.... you really gotta get all the info straight before posting,,, ill fill in the stuff you neglected

she made 352 at the wheels and nearly 400lbs of torque got the dyno graphs to prove it. if you do the math thats over 400 horses at the crank.

there are still restrictions on the car,,, probably could use 205's, and a larger cam profile, and a different intake, or have this one ported or something. But afterall she is a street car, not a race car.

running on the stock tune (for the 302) she is making 328 and 382.

i could change the timing and lower the fuel pressure if i had a timing light. however right now she's running fine and i dont want to go messing with stuff, id rather have a shop tune her since they know alot more then i do

whats up frank...didnt know u posted on here....yea sry u never mentioned to me how much the car made with the larocca chip in there.....regardless, 24lb inj are too small....you are maxing em out.........

 

[stang2004]

whats up frank...didnt know u posted on here....yea sry u never mentioned to me how much the car made with the larocca chip in there.....regardless, 24lb inj are too small....you are maxing em out.........

might be,, might not be, thats really for a tuner to determine,, and larocca tuned it fine with 24# injectors... it is a sh1tty tune, but they didnt recomend larger injectors

 

[stprorolla49]

might be,, might not be, thats really for a tuner to determine,, and larocca tuned it fine with 24# injectors... it is a sh1tty tune, but they didnt recomend larger injectors

hmmmmm......we shall soon see my friend.......

 

[stang2004]

hmmmmm......we shall soon see my friend.......

hahaha, well, its all up to alex and what he wants to do, and what his tuner recomends to him

 

[stprorolla49]

hahaha, well, its all up to alex and what he wants to do, and what his tuner recomends to him

correct...i think after he gets the car we'll go to laroccas and pick their brains for a while and see what they think abvout the injectors...if they can lean it out a lil bit, and make it work, more power too em.......im just curious to see what happens....im also curious why you dont have the larocca chip in there now.......it was in the glove box when we came to see the car.....

 

[bimmertech]

kick his ass seabass!!!

 

[stprorolla49]

kick his ass seabass!!!

HAHAHAHAHAHHAHAHA i dont know what teh hell your talkin about but its funny.....were not mad at each other just trying to figure out ****

 

[stang2004]

correct...i think after he gets the car we'll go to laroccas and pick their brains for a while and see what they think abvout the injectors...if they can lean it out a lil bit, and make it work, more power too em.......im just curious to see what happens....im also curious why you dont have the larocca chip in there now.......it was in the glove box when we came to see the car.....

i thought alex was buying this car

 

[stprorolla49]

i thought alex was buying this car

he is, im just excited to know someone with a 347...that mans i gotta build somethin now to kick his ass.........

 

[stang2004]

HAHAHAHAHAHHAHAHA i dont know what teh hell your talkin about but its funny.....were not mad at each other just trying to figure out ****

hahaha,, mike its from dumb and dumber


if alex decides to run the chip, then thats great, im just not running it