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383 Horsepower Estimates

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Old 12-27-2003, 08:05 PM
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Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: GM T56
383 Horsepower Estimates

Alright guys, the engine is totally figured out. After debating 355/383, I'm going 383. Might be a daily driver but I'll take the MPG hit and enjoy the torque

-2-bolt Block
-Scat 9000
-Scat 5.7" I-Beams
-TRW Hyperuetic Pistons (.030" Over)
-AFR 195's
-10:1 Compression
-Ported TPI Base/Plenum
-SLP Runners
-52MM Throttlebody
-XR276HR (224/230 @ .050, .535/.544 with 1.6 rockers)
-Proper Tune
-SLP Shorties

Any ideas of hp/tq? With the 6-speed and 3.73's, track times?

I'm ordering the rotating assembly ($539) in 2 weeks and porting the base/plenum in 1 week. The rest should come by next fall. I should add that I will be upgrading to a "ram" within the next 2 years.

-Corey
Old 12-28-2003, 11:39 PM
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Car: 92Z28
Engine: L98
Transmission: A4
300-320ish with the TPI. More with an intake though.
Old 12-29-2003, 11:11 AM
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Car: 1992 Camaro RS
Engine: 305 TBI
Transmission: GM T56
Originally posted by Insomniac92z28
300-320ish with the TPI. More with an intake though.
That's what most people are saying...

How about with a Superram (Gotta stay emissions legal)?
Old 12-30-2003, 06:44 AM
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Car: '88 Pontiac Trans Am GTA
Engine: 383
Transmission: 700R4
Re: 383 Horsepower Estimates

Originally posted by Rippin92RS
Alright guys, the engine is totally figured out. After debating 355/383, I'm going 383. Might be a daily driver but I'll take the MPG hit and enjoy the torque

-2-bolt Block
-Scat 9000
-Scat 5.7" I-Beams
-TRW Hyperuetic Pistons (.030" Over)
-AFR 195's
-10:1 Compression
-Ported TPI Base/Plenum
-SLP Runners
-52MM Throttlebody
-XR276HR (224/230 @ .050, .535/.544 with 1.6 rockers)
-Proper Tune
-SLP Shorties

I have almost the same build up except for forged rotating assy. with forged TRW flat top pistons, 4 bolt main block, Trickflow 23 degress twisted wedge heads and MSD ignition. I ran my numbers through Desk Top Dyno and came out with 420 hp and 478 ft torque. Now that is at the fly wheel. You never realy know what you have until you run it on a real dyno.
Old 12-30-2003, 07:31 AM
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My engine came out with 540HP & 620TQ@Flywheel...........

thats NO desk top dyno...........
But my engine is a TBI injected 406........

Midwest engine has there angine's ran@MATC's engine dyno....

I Think M.A.T.C has a wheel Dyno now for the madison area people........
I think they"ll run your car For a cheap price......

Last edited by 91 GTA Ramair2; 12-30-2003 at 07:34 AM.
Old 12-30-2003, 08:40 AM
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Car: 86 IROC
Engine: 6.2
Transmission: 700r4
Axle/Gears: 10 Bolt 4.10
Ramair2, what do you have that 406 in? That's not the motor in your 91, is it?
Old 12-30-2003, 08:41 AM
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it's going to be yea why??? it had an L-98 witch died so it got tempary 350tbi with lasted a summer and half of fall the blew up.

350TBI: 14.86@95.78mph

406TBI: low12 mid11's from what i hear it should turn but it might be summer 2005 before it's ready to rumble....

yeah the 540Hp &620RQ@Flywheel 406TBI is going in the 91GTA why???

If it's the 14secind run that's puzzleing Don't let it that was a tempary 350TBI i threw iin it ta get around for a summer.

Last edited by 91 GTA Ramair2; 12-30-2003 at 08:47 AM.
Old 12-30-2003, 09:11 AM
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Car: 86 IROC
Engine: 6.2
Transmission: 700r4
Axle/Gears: 10 Bolt 4.10
And, are you talking about Midwest engine on Milwaukee st? Your numbers just seem to be a little optomistic, and I'm curious because I know a few people from Midwest and I normally hear about the hot motors moving through there.
Old 12-30-2003, 12:38 PM
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Milwaikee street no no this place is in osio wisconsin Guy north of high way 8.......

the Print out was kind vag so I Don't Believe the torque reading is right if you ask me........

620TQ from only 10.5:1???? don't seem likely to me........

Eric from mid west designed it oh back in 2001 he might remeber me.

I'm mike...

he should remember scott,kevin, and charlie..........

Last edited by 91 GTA Ramair2; 12-30-2003 at 12:47 PM.
Old 12-30-2003, 12:41 PM
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I got a sheet with my spec's .

Dyno:
540HP@6500rpm.

620ftlb Torque@5,000rpm.



thats how it read's kinda vag if you ask me but i'll find out when it go's in the car........
MATC has a wheel Dyno they siad they would run it for me when it's done then we can fine out what it really is.......

I was told MATC Dyno's car's do they still??

Last edited by 91 GTA Ramair2; 12-30-2003 at 12:49 PM.
Old 12-30-2003, 12:45 PM
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No i'm not talking about that mid wesy engine but i have been there
you know ERIC???? he used to build the Tow truck engine's for my uncle and i think he did the 406 for the s-10.........

Larry Baakie Built my AMX's engine back in the day to bad he died.
last week......



But anywho i'll have jodie build my 390...........
Old 12-31-2003, 08:05 AM
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Car: 86 IROC
Engine: 6.2
Transmission: 700r4
Axle/Gears: 10 Bolt 4.10
I wasn't aware that MATC had a chassis dyno... I know they have a transmission dyno, though. There is a chassis dyno in Madison, it's out on hwy CV north of Packer's Ave. I believe you get three WBO2 pulls for $65 or so.
Old 12-31-2003, 07:50 PM
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Yea last i heard MARC has a chassie dyno..... I could be mistakeen but I was told they do...

CV Tradesman has one,...
Old 01-01-2004, 01:43 AM
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Originally posted by 91 GTA Ramair2
I got a sheet with my spec's .

Dyno:
540HP@6500rpm.

620ftlb Torque@5,000rpm.



thats how it read's kinda vag if you ask me but i'll find out when it go's in the car........
MATC has a wheel Dyno they siad they would run it for me when it's done then we can fine out what it really is.......

I was told MATC Dyno's car's do they still??
Yep,,, 620 TQ @ 5000 means you would have a 590 horse engine @ 5000 rpm. 520 ft/lb @ 5000 might be more like it,,, that would be around 495 horses,,, which generally speaking is about what a 540 horse 406 engine @ 6500 rpm could be making at 5000.

Good luck with the install,,, sounds like you've got a good stout build going there.
Old 01-01-2004, 08:11 AM
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Thank's kevin I hope it comes out to be a solid relaible mechine thats jusy a smige faster then one might think by liiking at the car.
.............. ............. ............................... ..............
Old 01-02-2004, 08:27 AM
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Car: 86 IROC
Engine: 6.2
Transmission: 700r4
Axle/Gears: 10 Bolt 4.10
Best of luck with your sleeper Ramair2. I enjoy a sleeper myself!
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