jw33

iTrader: (8)

Sounds like you crossed a few spark plug wires up....

lt4malibu

iTrader: (39)

some more updates:

took the car to get a dyno-tune, was very disappointed in the performance, only made 343hp at the wheels and the car is actually .3 SLOWER with the cam(i think its too big for a stock displacement motor and makes all its power in the 5000-6800 range - contrary to what TSP claims...)

i will say if you're in the NJ tri-state area and need a tune, CARTEK in garwood is the place to go. super informative and took the time to explain everything, Max even bought me a soda

it does sound nasty on the dyno though :
http://s154.photobucket.com/albums/s...tchcartek2.flv

jw33

iTrader: (8)

Huh... That does seem low? Is that a MS3 or even bigger? Did you get a stall converter of some kind also?

lt4malibu

iTrader: (39)

MS4 cam, and 4000 stall converter. the second pull it made 375 but that was with no air filter and the intake pointing at the fan(my air intake was taking hot air from the radiator)

jw33

iTrader: (8)

375 is closer to where it should be, but I'm kind surprised that the et didn't improve just because of the stall? I've heard that auto cars sometimes act weird on the dyno so maybe you just need to play with it at the track....

97'-lt1

That does seem really low..I have always seen the Ms4 doing pretty good in stock motors..Strange for sure..How was the weather the night you went back with the cam? Car looks good and sounds great too..Can't wait to get my junk finished should be a couple weeks..I really need to update my thread..Haha

lt4malibu

iTrader: (39)

the air was ****, and it was pretty hot so in good air itd be a 12.0 car with the cam(it went 12.15 stock) - i was expecting to pick up a full second in the ET and go 118-120mph with the cam and converter.

the few people ive talked to think it has too much duration for a small motor, i guess thats why its only making 150hp and 190tq @ 3000 rpm lol... it definatley sounds intimidating, but id rather it sound like a dud and be a killer then the other way around.

udlose99ta

iTrader: (18)

i had the ms4 in my stock 99 ls1 m6, and trapped 121... so it did fine in my lil 346. with that light stang and a stall it should be low 11's i would think

lt4malibu

iTrader: (39)

the car does only have 373 gears's, i think more gear would help the cause but i dont wanna kill the streetability either.

udlose99ta

iTrader: (18)

what kinda 60' times are you getting with the stall? should be in the low 1.6's at least

lt4malibu

iTrader: (39)

1.92 60's, went 1.78 with the stock converter...

NavyBlue99SS

You either have no traction or something is wrong with the car. You should be in the low 11's with that setup even with the 3.73 gears and you should be 60'ing in the 1.50's. Dont shrug it off as a cam thats to big because that cam has proven to work well in stock engines.

mulletnotch

iTrader: (2)

I agree. My cam is pretty large and in a 5.3 motor and I don't have any complaints. Car made good horsepower with a decent graph as well, made 356hp and 333tq in the Phoenix heat. I do agree the converter does some weird things to dyno numbers/graph....

What are the specs for that cam? I'm not familiar with it. Mine is 232/236dur 590/601lift @112 I think. LOL Been a while since I pulled the cam card. Is your trans slipping by any chance? Also that jump in power with the intake tube off seems HUGE!! I would think maybe you have another culprit somewhere.

lt4malibu

iTrader: (39)

heres the specs off the cam card i got from TSP

grind - MS4
duration @ .050 - 239/242
advertised duration - 289/291
lobe lift - .383/.358
gross valve lift - 649/609
lobe separation - 111
advance ground in - 1
valve timing@ .050:
intake OPEN - 8 BTDC
intake CLOSE - 51 ABDC
exhaust OPEN - 52 BBDC
exhaust close - 10 ATDC

the trans was just rebuilt, the only other 2 conclusions i can come to is either the tune is off or the converter isnt flashing to 4000, which is hard to check without a manual valvebody or a trans brake. i also considered the fact that the converter possibly locked up in 3rd gear...

check the video for yourselves - no tire spin and you can hear it go flat upstairs...
http://s154.photobucket.com/albums/s...after_tune.flv

i also agree the jump in power just from moving the intake is huge, but it cooled the incoming air by about 30 degrees...

jw33

iTrader: (8)

It looks like guys are making right around 400rwhp with that cam and minor supporting mods so yeah even 375 is on the low side and the track doesn't lie. Did you pick up any MPH? Did you get a graph from the dyno? I wonder if you might need to pull the cam out and have it checked out to make sure it is what the card says it is? Did you install it how they like to say "dot-to-dot"? Maybe the timing chain is shot and is throwing the cam timing off by quite a bit? Are you getting WOT when you mash the gas to the floor? Sometimes it simple stuff like that?

mulletnotch

iTrader: (2)

Really sounds like your converter is freakin things out a bit..... With that cam if you're getting power thru the trans and to the rear tires you should of at the very least gained a few mile an hour as well as gained HUGE in your 60ft from the converter. I haven't taken mine to the track yet so call this "bench racing" if you will but....... My car makes 356 is down on torque compared to your setup and I have played with a few cars and bikes that I know run in the 11's and I do quite well against them if not beat them.

I really think you have a converter problem. What kind of converter is it? Sounds like it's never really "locking up" or getting thru your stall speed.... I know when my car was tuned the tuner "locked" the trans (4l60E) into 3rd for the pulls and it would still unlock up high at WOT but when it didn't man was the graph funny and power was for crap.

Good luck with it.... At least once it's done you know it'll be layin some serious mid to low 11second passes on the unit.

mulletnotch

iTrader: (2)

Good point JW33 - My car when I first fired it and drove it the TPS was not reading 100% which made the trans do some very weird things! I adjusted my cable(used a factory 5.0 cable) and it was night and day difference.

lt4malibu

iTrader: (39)

i actually lost MPH, went 112 friday night as opposed to the 115 it went a few months back. the reason i chose this cam is because of the fact so many guys were making big power for a cam-only motor. my first thought friday night was converter, maybe i should stick to my gut...

97'-lt1

I would have to agree..The Ms4 has been proven to make power in stock motors..I think its something to do with the converter..

Darracq

iTrader: (1)

from the vid the converter is way to tight, and it does sound like the it is locking up in 3rd, what are you shifting at, that cam needs converter, gears and rpm.