LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

What kind of rear wheel are we seeing in 383's?

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Old 02-13-2003, 02:07 PM
  #16  
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Originally posted by a_z28_vance
Good for you! I've seen several Completely STOCK LS1's at Gateway run my same mph, yet they are in the 13's...... MPH doesn't win the drag race...
Let me introduce you to a new idea since you havent grasped this one... i'll talk slow for you dont worry.

MPH IS THE BIGGEST INDICATOR OF HP
E.T. Is almost all traction and vehichle, and btw your mph is more consistant with a car that has 310-320 rwhp (i'm being generous). if you were actually turning out that kind of rwhp you should be doing over 112 easy.

Originally posted by a_z28_vance
If you knew the answer to your own question then why ask it? If you build race engines, then you know that there is too many variables to determine rwhp. I wasn't being a jerk, just trying to be informative.
He didnt know the answer to his question(didnt do very good on reading for comprehension in school did you). how is he supposed to know what other people are turning out rwhp wise from their ltx 383's. you weren't being informative you were trying to make an *** of him by putting on that he should just know you cant guess what rwhp a car will put down. yes theres a lot of variables, but guess what he didnt want a guess or your opinion or what you imagine that your engine would do if it was hand assembled by jesus. he wanted actual hard facts from people who have built a 383 and dyno'ed it.

Originally posted by a_z28_vance
My guess is that a 383 will make between 390rwhp and 475rwhp, depending on CAM, Heads, headers, and CR.
your guess isnt a bad one and i'm sure these numbers can be had. depending on cam, heads, headers, and cr huh. for a guy that knows that theres so many variables you left out a couple but.. why should i educate you.

I usually try not to be such a jerk, and yes bret is what i would consider a friend of mine. He was in the last engine masters challenge (that should mean something to an auto rag jockey like yourself). So please unless you can show me where you have spent near the time learning engine theory and doing real world testing dont try to talk down to him.
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Old 02-13-2003, 02:23 PM
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This is SStrokerAce, I'm using Old Strokers account at the shop.


a_z28_vance,

Your right I did call you a jerk. The sarcastic comment is why. If you doubt that I know what I'm doing, beat me by building something better than I can. Seems like the Engine Masters contest is open to anyone, and you can still apply in 2003. Not that you have to. Call me out on something, and I'll just ask you to come play. (done with being a ****)

I guess my point on the 108.5mph comment is that you do that with 344rwhp, HP to the pavement is directly related to mph. I don't think my SS is going to put down 340rwhp though.

Being a engine builder I look at MPH, because there is more car and tire in E/T but a MPH is HP and weight. A high MPH means that there is alot of power getting to the pavement.

The reason I asked the question is because I would like to see what people have done, and how one of my engines will fair. "Market Research."

Using Injuneer's 12.8% driveline loss for a 10 bolt M6 I have a feeling that a 450+rwhp pull might happen after some tuning.

NightTrain,

Yeah with LT4's I expect more, most likely 30-40more HP than the LT1's we were orginally looking at. 215cc runners, With 11:1 290-295cfm heads, a medium cam (mild for most with a 383, but with 215cc I can go a little mild) I think we can hit our goal.

Alex,

Yeah SAE is the only way to talk, I'm not sure how much cash will be in this engine as of yet, but to me it's a budget engine done right. This thing will make a heathly 383 and right up there with some LS1 stuff I've seen. I'm getting worried about the rear end now. Good thing it's not my car, with some good DR's it's not going to have a long life.

96-speed,

If you do a HR right a SR is not needed, unless you are going over 240deg of duration @ .050. If you need more duration than that, go to a SR, if not stay with a HR.

Bret Bauer
Bauer Racing Engines
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Old 02-13-2003, 03:08 PM
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Originally posted by NightTrain66
Alex,
Who made 420 with a Hot Cam?

"Oh, and I personally don't think 420+rwhp can be done with the HOT cam."

I have NOT seen an LT1 make 420rwhp with a HOT cam. I don't know why, but I thought someone mentioned a HOT cam in a stoker going me make 420+rwhp. I claim stupidity.

Fred - what cam was in the 381 and what kind of heads?

-Alex
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Old 02-13-2003, 03:19 PM
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CNC Cylinder Heads, Inc. LT4 heads and intake, 230/242 114 0.590/0.590 solid roller
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Old 02-13-2003, 04:19 PM
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Originally posted by Injuneer
CNC Cylinder Heads, Inc. LT4 heads and intake, 230/242 114 0.590/0.590 solid roller
Welp, that's why you made 425rwhp. That's basically a CC306 on a 114 with additional lift. I think most people would run a hyrdaulic cam.

The most I've seen from a N/A LT1 stroker with a hydraulic cam is 432rwhp with aformentioned Crane cam.

-Alex
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Old 02-13-2003, 04:54 PM
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Didn't Jordan Musser's 383 roll nearly 500rwhp with AFR's and a solid roller? I know he trapped 130 mph on motor....
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Old 02-13-2003, 05:01 PM
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i thought he had a 396 or a 403 or something like that maybe its his new setup. I think the reason that he did better than most people power wise is because he does a little custom intake tuning on his own and i think he ported on his own heads some after he got them and wasnt happy with em, and we all know porting is an art form more than a science.
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Old 02-13-2003, 06:42 PM
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Yeah, Bret and I were talking about this earlier yesterday.

I would say 435+ would be excellent considering the budget we are working with here. Just as a comparison I made 349 rwhp through an A4 with 2800 stall, smaller cam, 33 less cubes and heads with flow numbers that were 40cfm less across the board. As an M6 my car would have done 375 ish as it was.

The exhaust cant be anymore free flowing since it is LT's with a cutout now, but may end up being duals with an x pipe before it goes on the dyno for tuning and numbers. All other possible mods are already there...

Id kill for 450 though.
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Old 02-13-2003, 07:48 PM
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My last 383 made 451rwhp and 416rwtq.

It was 11.7 to 1 compression, .036 quench distance, scat cast crank, eagle 5.7 h-beams, diamond forged pistons, low tension oil rings.

250/251 @.050 solid roller, .590 lift.

LT1 heads with a "stage 4" port job by GTP. He said they flowed 297cfm @.600 on the intake with a 2.055 valve and a 197cc intake runner.

Hooker longtubes, dual exhaust w/x-pipe all the way out the back, SS airbox, 6-speed, 12-bolt w/4.10's.
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Old 02-13-2003, 08:20 PM
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Originally posted by INTMD8
My last 383 made 451rwhp and 416rwtq.

It was 11.7 to 1 compression, .036 quench distance, scat cast crank, eagle 5.7 h-beams, diamond forged pistons, low tension oil rings.

250/251 @.050 solid roller, .590 lift.

LT1 heads with a "stage 4" port job by GTP. He said they flowed 297cfm @.600 on the intake with a 2.055 valve and a 197cc intake runner.

Hooker longtubes, dual exhaust w/x-pipe all the way out the back, SS airbox, 6-speed, 12-bolt w/4.10's.
INTMD8...very nice numbers.
Any track times with that set up??
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Old 02-13-2003, 08:32 PM
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Sorry, No numbers yet Lloyd Still waiting on my canton oil pan to arrive..It shoulda shipped today or tomorrow and it will go in on my next off weekend..Oil pump was cavitating so Im not taking a chance right now and driving my daily driver instead till the pan gets put on..


Cody
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Old 02-13-2003, 08:34 PM
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Originally posted by INTMD8
My last 383 made 451rwhp and 416rwtq.

It was 11.7 to 1 compression, .036 quench distance, scat cast crank, eagle 5.7 h-beams, diamond forged pistons, low tension oil rings.

250/251 @.050 solid roller, .590 lift.

LT1 heads with a "stage 4" port job by GTP. He said they flowed 297cfm @.600 on the intake with a 2.055 valve and a 197cc intake runner.

Hooker longtubes, dual exhaust w/x-pipe all the way out the back, SS airbox, 6-speed, 12-bolt w/4.10's.
Just out of curiosity, do you have a dyno graph online of that NA run? Also, I think Jordons numbers were made with hogged out heads (like 210+cc runners) with a large solid roller. His definition of streetable may be different from yours and mine.

-Alex
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Old 02-13-2003, 08:41 PM
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AHARTZ28 in San Antonio, Texas pulled 397 RWHP/464 RWTQ on a 383 he built. Thats with a Solid Cam, Hooker LT's, GTP Heads ( I believe). Also that was done with a 3800 Vigilante Converter so the horsepower numbers will seem a bit low. LT1 Edit is the program he uses.

Side note: On a 96Z that he did has CC306 cam, LT1 castings that he ported himself (they even have the stock size valves), Hooker LT's, K & N C.A.I., 58 MM TB. The rest of the engine is bone stock with 80,000+ miles. Pulled 415 RWHP/379 RWTQ. The engine was tuned using LT1 Edit.

Both cars have the potential of much more. Those were first time pulls on the dyno. Once the cars get more track time they will be running better.
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Old 02-13-2003, 08:42 PM
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I do have a dyno graph and a scanner but I'm not sure how to post it.

Maybe I could email it to someone?


Never got a track time on that setup. The previous 383, made 416rwhp and 383rwtq and ran 11.8 @120 on radials and full weight car. It was 12.7 to 1 and I cracked a piston due to detonation on pump gas.

When I rebuilt the engine, and lowered the compression, I re-used the crank (never had it magnafluxed).

I can only assume the detonation from the previous engine had damaged it, because it cracked shortly after being installed in the "new" motor.

I'm confident I could build a 500rwhp naturally aspirated LT1. I'm just after more horsepower and driveability now so I've switched to forced induction.
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Old 02-13-2003, 09:04 PM
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Matt,
Looking at some of these rwhp figures is getting me excited! I have been looking into a solid roller set-up. How far along are you on the motor? I will be in Buffalo this weekend give me a call if you have a chance.
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