View Full Version : 340whp unlocked?


white99ta!!
08-15-2012, 08:03 PM
I have slp lid, delphi maf, slp bellow, 80mm bbk tb, bbk ssi intake, 232/236 .579 112lsa, comp springs, slp long tubes slp ory, slp lm1, built 4l60 tci ssf 3600, moser 12 w/ 373s. I got my car dyno tuned the other day and had to drive an hour there and it was pretty hot but i ended up putting down 340whp and 315wtq unlocked. I was gonna have the tuner do a run locked but i was afraid the converter wouldnt take the abuse.That seems like very low numbers to be putting down for the mods ive done. what do you think? I know my 853s are hurting me but im in the process of looking for some ported 243s.

GA95DCMSS
08-15-2012, 08:53 PM
Those are beyond low. I've seen cars with cam's ALOT smaller than that make more than that on a bad day. Who tuned the car if I may ask? Intake leaks? Exhaust leaks? Last time plugs and wires were replaced? Got a coil unplugged? I don't see pushrods on that list. Are you still running stock PRs?

s346k
08-15-2012, 09:13 PM
something is up with the dyno (reading very low) or the car is hurting.

i've watched bolt-on cars make higher numbers.

have you been to the track yet? what's it trap?

white99ta!!
08-15-2012, 09:54 PM
when the car was hooked up the guy said it was running great. Im running stock pr's. I havent been to the track yet with this set up. It was hot but nothing crazy. I replace the wires and plugs about 2000 miles ago it was on a fresh oil change. The car runs good and no codes have popped up.Jaime over at hhp carolina in North Charleston tuned it. any ideas would could be wrong? Ive seen cars with less put out way more power too. when i had 273's 10 bolt, full intake and exhaust, stock suspension and a hurt trans i ran a 12.9 at 108 at atco raceway in NJ.

white99ta!!
08-15-2012, 10:00 PM
something is up with the dyno (reading very low) or the car is hurting.

i've watched bolt-on cars make higher numbers.

have you been to the track yet? what's it trap?
My buddy about a month before me with his car similar setup except hes got a bigger cam and milled 243s and through an m6 he put down 392 when it was 100 out. South Carolina is very humid too. but shit i know i should be a lot higher than 340

GA95DCMSS
08-15-2012, 10:24 PM
when the car was hooked up the guy said it was running great. Im running stock pr's. I havent been to the track yet with this set up. It was hot but nothing crazy. I replace the wires and plugs about 2000 miles ago it was on a fresh oil change. The car runs good and no codes have popped up.Jaime over at hhp carolina in North Charleston tuned it. any ideas would could be wrong? Ive seen cars with less put out way more power too. when i had 273's 10 bolt, full intake and exhaust, stock suspension and a hurt trans i ran a 12.9 at 108 at atco raceway in NJ.

Mistake #1: Stock pushrods with that aggressive of a camshaft and aftermarket springs.

Mistake #2: Not measuring pushrod length to get the proper preload. Are your heads stock?

Pull your pushrods and check to see if you have a bent one...then get some hardened ones.

white99ta!!
08-15-2012, 10:29 PM
Mistake #1: Stock pushrods with that aggressive of a camshaft and aftermarket springs.

Mistake #2: Not measuring pushrod length to get the proper preload. Are your heads stock?

Pull your pushrods and check to see if you have a bent one...then get some hardened ones.

I do have stock heads. What size pushrods should i get? Thanks for the help. Could that be the problem? or just one of a few

Mazzenger
08-15-2012, 10:40 PM
Aside from the stock pushrods, you are losing power through the Moser.
I have seen locked converters push numbers up anywhere from 5-40 rwhp.

So who knows. Take it back to the track. See what it traps.

GA95DCMSS
08-15-2012, 10:43 PM
I do have stock heads. What size pushrods should i get? Thanks for the help. Could that be the problem? or just one of a few

If you didn't change the heads, I'd say get the stock length, which is 7.400. Some cams are cut on a smaller base circle IIRC, so you may need something slightly longer. Pushrods usually run ~100 a set, which is pretty reasonable. If you can, borrow a pushrod length checker, or hell, buy one, measure, and then order. There are many threads about how to check pushrod length. I think I have some bookmarked, I'll have to look again.

To see if you have a bent one, pull them out of the engine, one cylinder at a time, and try to roll them across a SOLID, SMOOTH, FLAT surface. If you have one that won't roll, then there's your culprit.

GA95DCMSS
08-15-2012, 10:51 PM
Aside from the stock pushrods, you are losing power through the Moser.
I have seen locked converters push numbers up anywhere from 5-40 rwhp.

So who knows. Take it back to the track. See what it traps.

I've seen a car lose ~20rwhp through an M9, but for him to only dyno @ 340rwhp, I feel thats a MAJOR discrepancy. I'd be PISSED if my Impala SS Dyno'd anything less than 380hp in it's current state, and my cam is WAYYY smaller than his. I definitely feel something isn't right, if the dyno was set up properly.

OutrunNAScaR14
08-15-2012, 11:21 PM
Man I have almost a identical setup as your car, cam and all, 3500 stall, everything. And I only made 350hp 360 tq. I thought my numbers were low too.

I have 853's also but I just bought a set of 243's to put on.

white99ta!!
08-15-2012, 11:25 PM
Thank you guys for the advice. Im gonna get on those harden pushrods, ive been wanting to do it for a little bit now. Ill let you know and if something is bent ill put up some pics. Im gonna bring it to the track and see how i do. The numbers are discouraging but if i some how pull a 1.60 60' i think i can pull a high 11 but then again i thought i wouldve been 380whp so well see how it goes either way i gotta get some drag radials and some harden pushrods.

GA95DCMSS
08-15-2012, 11:29 PM
Thank you guys for the advice. Im gonna get on those harden pushrods, ive been wanting to do it for a little bit now. Ill let you know and if something is bent ill put up some pics. Im gonna bring it to the track and see how i do. The numbers are discouraging but if i some how pull a 1.60 60' i think i can pull a high 11 but then again i thought i wouldve been 380whp so well see how it goes either way i gotta get some drag radials and some harden pushrods.

Yea, take it to the track, see what it runs. If it runs a good number, then its must be one HELL of a stingy dyno.

djfury05
08-16-2012, 11:21 AM
I have an extra set of 7.400 hardened cromoly pushrods here. PM me for my number.

stumprrp
08-16-2012, 11:29 AM
I wouldnt worry. My old 98Z with factory LS1 intake (i know), stock heads, 230/236 cam and a good exhaust put down 348 unlocked. This was through a 10 bolt. It trapped 114-115 on a regular basis @ 3500 lbs.

thunderstruck507
08-16-2012, 11:50 AM
The last time I was on the dyno I had:

230/224 revers split cam
stock 853 heads
Fast 90/90
1 3/4 longtubes
3" duals, no crossover
25% underdrive pulley
Yank SS 3600
GM 12 bolt, 3.42 gears, upgrade axles and Eaton posi

http://img.photobucket.com/albums/v477/thunderstruck507/20110915081713_00001.jpg

Unlocked autos on dynos are not going to make happy numbers. On a different day without the pulley it made 368rwhp but the trans grenaded after the driveshaft did this:

http://img.photobucket.com/albums/v477/thunderstruck507/transfailure014.jpg

http://img.photobucket.com/albums/v477/thunderstruck507/transfailure011.jpg

http://img.photobucket.com/albums/v477/thunderstruck507/transfailure013.jpg



Car ran 7.78@90mph with a 1.78 60ft the next day in some serious heat/humidity (3000+ DA). Weighs somewhere over 3700#s. Ran 12.2@110mph with a 1.78 60ft on that setup before the spings went weak and ate the cam. Nothing stellar but for a heavy car I think it wasn't bad. IIRC the math indicated RWHP closer to 380+rwhp.

white99ta!!
08-16-2012, 07:26 PM
The last time I was on the dyno I had:

230/224 revers split cam
stock 853 heads
Fast 90/90
1 3/4 longtubes
3" duals, no crossover
25% underdrive pulley
Yank SS 3600
GM 12 bolt, 3.42 gears, upgrade axles and Eaton posi

http://img.photobucket.com/albums/v477/thunderstruck507/20110915081713_00001.jpg

Unlocked autos on dynos are not going to make happy numbers. On a different day without the pulley it made 368rwhp but the trans grenaded after the driveshaft did this:

http://img.photobucket.com/albums/v477/thunderstruck507/transfailure014.jpg

http://img.photobucket.com/albums/v477/thunderstruck507/transfailure011.jpg

http://img.photobucket.com/albums/v477/thunderstruck507/transfailure013.jpg



Car ran 7.78@90mph with a 1.78 60ft the next day in some serious heat/humidity (3000+ DA). Weighs somewhere over 3700#s. Ran 12.2@110mph with a 1.78 60ft on that setup before the spings went weak and ate the cam. Nothing stellar but for a heavy car I think it wasn't bad. IIRC the math indicated RWHP closer to 380+rwhp.

Thats hell of a mess you have there. I am very disappointed in the numbers but im really only worried about the track. After i get some dr's im gonna go and ill post my numbers but im not sure when ill make it. Every track around here is very far away. Well far enough that i dont wanna drive my car then race and come back.

white99ta!!
08-16-2012, 07:27 PM
I have an extra set of 7.400 hardened cromoly pushrods here. PM me for my number.

PM sent

TORK?
08-17-2012, 09:50 AM
For what it's worth, I had an a4 99 trans am with bolt ons and unlocked ss3800 that only put down 303rwhp on a mustang dyno. But it ran 1.58 60' and 7.82 in the 1/8th. I wouldn't worry too much about it as long as it's tuned right.

white99ta!!
08-17-2012, 12:15 PM
Ya I trust the guy that tuned it. These numbers were depressing but hopefully the numbers at the track make it rite. Haha

Blk98Vert
08-19-2012, 02:11 AM
I don't see a problem. Assuming you are losing 10/10 with the rear and your heads You would be at 360 unlocked with a 10 bolt and 241s. Sounds on par with me.

white99ta!!
08-19-2012, 03:44 PM
Ive seen people put down a lot more power with the same setup.

white99ta!!
08-23-2012, 01:50 PM
Mistake #1: Stock pushrods with that aggressive of a camshaft and aftermarket springs.

Mistake #2: Not measuring pushrod length to get the proper preload. Are your heads stock?

Pull your pushrods and check to see if you have a bent one...then get some hardened ones.

I replaced the pushrods for comp cams chromoly 7.4s and not one of the stock pushrods were bent. while i was in there i replaced the rockers with other stock rockers with the trunion upgrade.Thanks to djfury05 for the hook up on all of the parts needed.

GA95DCMSS
08-23-2012, 02:01 PM
I've done a bit of research over the past week or so into that cam, and I see numerous people that seem to dyno like a bolt on car with it. I know, yea "the dyno's a tuning tool, take it to the track" and I'm a firm believer in that myself. I still don't think it should be making only 340rwhp. Take it to the track and see what she does man. If she disappoints you there, then there is something really wrong.

thunderstruck507
08-23-2012, 02:32 PM
For what it's worth I never hear anything good about those TCI converters. If you locked it for a pull and picked up 40+ rwhp I wouldn't even bat an eye about it.

white99ta!!
08-23-2012, 06:46 PM
As soon as I can get some runs In I'll post my times. If I'm still disappointed then I'll go with a different cam.

white99ta!!
08-23-2012, 07:00 PM
Or heads

Slowhawk
08-23-2012, 07:23 PM
You can't complain about the number when your on the dyno with an unlocked TCI converter. Go back to the dyno and lock the converter. I bet you'll be happy with your numbers after that.

WTR's camaro
08-23-2012, 08:27 PM
my camaro made 342 rwhp and 351 ft tq at 5500 with tsp 1 7/8 headers and full exhaust...

GA95DCMSS
08-23-2012, 08:52 PM
my camaro made 342 rwhp and 351 ft tq at 5500 with tsp 1 7/8 headers and full exhaust...

Nice to know but that doesn't help solve the OPs problem at all.

thunderstruck507
08-24-2012, 09:45 AM
As soon as I can get some runs In I'll post my times. If I'm still disappointed then I'll go with a different cam.

And you won't be any better off.

If you're going to blow money on something, get a quality converter from Yank, Circle D, etc. But if you're not going to lock it, you're still going to show "low" numbers.

WTR's camaro
08-24-2012, 09:55 AM
Nice to know but that doesn't help solve the OPs problem at all.
10-4 on that i only ment it in the way that is mine is making that with what i have... then something is wrong

thunderstruck507
08-24-2012, 10:03 AM
10-4 on that i only ment it in the way that is mine is making that with what i have... then something is wrong

Unless your car is a large stalled auto that was on the same dyno the same day as the OP, the numbers do not mean anything.

Dynos are tools that are calibrated differently and things like loose stall converters drastically skew numbers.

stumprrp
08-24-2012, 10:07 AM
Slowhawk is the one who spec'd and dyno'd the 348whp setup i said in my previous post and the track times backed it up 114-115 every single pass almost 116 on street tires in sub 60 degree weather. Take it to the track and rip.

white99ta!!
08-27-2012, 09:25 PM
Stumprrp- what was your time in the 1/4 and 1/8th? What was your 60ft? I'm getting some et street 2s this weekend and possibly going to the track. I only have 1/8th around me(Beaufort, sc) but I'm trying to go to Darlington this weekend. Hopefully It rips hard at through track.

stumprrp
08-28-2012, 08:30 AM
It'll rip. It was bone stock 100k mile suspension with 255 ET streets, 3600 converter and 3.73 gears. 1/4 was always 11.90-11.97 and the 1/8 was around 7.6x. MPH was consistantly 114-115 and 90-91.

Race weight was 3460 so that helped a bit.

thunderstruck507
08-28-2012, 09:34 AM
With the setup I posted above the day after that dyno sheet my car ran 7.8@89mph with a 1.78 60ft in 2500+ft DA. Race weight was around 3750#.

stumprrp
08-28-2012, 10:09 AM
Yeah man. Dont worry about that dyno nymber. Itll be good.

white99ta!!
09-02-2012, 01:33 AM
Thanks for your input guys.

kinglt-1
09-02-2012, 05:27 PM
You can't complain about the number when your on the dyno with an unlocked TCI converter. Go back to the dyno and lock the converter. I bet you'll be happy with your numbers after that.

best post in this thread so far...op listen to slowhawk!!

white99ta!!
09-09-2012, 05:30 PM
The reason i didnt lock the converter before was i heard TCI was shit and i didnt wanna risk messing up the clutches. Im working on getting a set of 243s then ill get back to the dyno and lock it. Im taking leave to go back home and ill be running my car at atco raceway in NJ. So ill post my times and videos. I will do the head swap before going to the track. I was supposed to get heads but 3 people backed out on this forum. If you dont wanna sell anything dont post it. Most guys think they have gold. People selling non ls6 243s for 700? Ill be going home in Oct. so ill post everything around that time. Thanks for the help guys. I appreciate it

thunderstruck507
09-10-2012, 10:09 AM
Most guys think they have gold. People selling non ls6 243s for 700?

That's insane. I wouldn't even pay the high "normal" price of $500 for ls6 243s.

I lucked out and got some 799s on here for $250 because 1 chamber had some minor damage I fixed when I did the hand porting.

white99ta!!
10-17-2012, 01:30 PM
So i went to the track yesterday went 12.2 at 110 with a 1.7 60ft. I started at 12.3 thrn dropped to 12.2 i hooked up everytime but couldnt figure out the best way to launch. I held it around 1300 and flashed it the rest if the way. Any ideas? I wanna go back and get a better time. But still impressive for 340whp. I drug a supercharged mustang down the track. Haha.

thunderstruck507
10-17-2012, 02:34 PM
Can you post up the whole slip? Any idea what the DA was? Weight of the car?

s346k
10-17-2012, 04:04 PM
Can you post up the whole slip? Any idea what the DA was? Weight of the car?answering these questions is helpful.

however, it seems there is a problem with the power output and/or delivery to the tires. that car should run a lot harder. my bolt-on 00 car went 12.0s @ 111 with a da of ~2000' and a raceweight around 3600 lbs. i even had an el cheapo fuddle converter. 4k stall. it wasn't efficient at all. guy who bought the car swapped it for a 4k yank and went quicker and faster than i did.

white99ta!!
10-17-2012, 05:16 PM
I'm not sure to find out the da. It was at Atco raceway in new jersey and I'm not sure the weight either. I took out my rear seats and spare tire plus all of my toola but i put in a moser 12, midwest chassis torque arm and subframe connectors, I'm guessing arou d 3700 maybe less. What's the best way to launch with a 3600 stall converter? I'm gonna try to post the slip rite after this post. Traction wasn't an issue. I brake stalled to 1300 and flashed it the rest of the way.

white99ta!!
10-17-2012, 07:43 PM
It won't let me upload the picture from my phone and i don't have access to a computer but ill list everything from the slip.
R/t- .386
60'- 1.730
330- 5.043
1/8- 7.819
Mph- 87.81
1000- 10.246
E.t- 12.296
Mph- 110.72

white99ta!!
10-18-2012, 02:25 PM
I'm running a tci super street fighter 3600 stall. What is the best way to launch?