MMS 388 Dyno Results

Reply Subscribe

Thread Tools

Search this Thread

Mar 2, 2003 | 09:18 PM

#21

JTM

TECH Regular

Joined: Jan 2002

Posts: 444

Likes: 0

From: Tulsa , Oklahoma

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />Originally posted by Ragtop 99:
 <blockquote>quote:<hr />Originally posted by JTM:
 <blockquote>quote:<hr /> Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP <hr /></blockquote>Whats wrong with his exhaust, what could he do to pick up 25rwhp? J/C <hr /></blockquote>Look at the graph. Without the cut-out open the motor starts choking at 3600 rpm (red line). Its down about 23 RWHP and 25 RWTQ compared to the open cutouts. (blue line) <hr /></blockquote>I thought you were talking over the cutouts. Misunderstood. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Mar 2, 2003 | 09:25 PM

#22

John B

Moderator

iTrader: (10)

Joined: Nov 2001

Posts: 3,264

Likes: 21

From: Phoenix, AZ

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />quote:
Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP
--------------------------------------------------------------------------------Whats wrong with his exhaust, what could he do to pick up 25rwhp? <hr /></blockquote>Everything past the merge collectors needs to go! Either a 4" Mufflex or preferably true duals with an "X" pipe!

Mar 2, 2003 | 10:12 PM

#23

JP98SS

Thread Starter

TECH Apprentice

Joined: Feb 2002

Posts: 358

Likes: 0

From: Alta Loma, CA

Re: MMS 388 Dyno Results

4" Mufflex = LOUD
True Duals = LOUDER

Any quiet options?

Mar 2, 2003 | 10:46 PM

#24

Nine Finger 02 Z28

8 Second Club

iTrader: (11)

Joined: Feb 2002

Posts: 757

Likes: 0

From: (760) Phelan Ca.

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />Originally posted by JP98SS:
 4" Mufflex = LOUD
True Duals = LOUDER

Any quiet options? <hr /></blockquote>Come on JP my car isn't that loud is it? <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

[ March 02, 2003, 10:48 PM: Message edited by: Nine Finger 02 Z28 ]

Mar 2, 2003 | 11:38 PM

#25

Terry Burger

TECH Veteran

iTrader: (4)

Joined: Nov 2001

Posts: 4,712

Likes: 0

From: Simi Valley, CA

Re: MMS 388 Dyno Results

I still need to do a before/after dyno with mine, but I bet I lose less than 10rwhp!

Mar 3, 2003 | 12:06 AM

#26

JP98SS

Thread Starter

TECH Apprentice

Joined: Feb 2002

Posts: 358

Likes: 0

From: Alta Loma, CA

Re: MMS 388 Dyno Results

Terry, your car is louder than mine. I want to be able to go WOT without alerting every cop within a 10 mile radius. Can't have fun with the police on your *** <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />

Mar 3, 2003 | 12:37 AM

#27

ROBS SS

9 Second Club

iTrader: (7)

Joined: Nov 2001

Posts: 508

Likes: 0

From: San Bernardino CA

Re: MMS 388 Dyno Results

hey, Try mine JP ,I dont think I lose anything with mine <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> "TRUE DUAL 3 1/2" " <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Mar 3, 2003 | 12:50 AM

#28

383ss

10 Second Club

iTrader: (14)

Joined: Mar 2002

Posts: 2,893

Likes: 0

From: Kansas City, KS

Re: MMS 388 Dyno Results

awesome numbers!!! I don't think it's peaky at all. Just looks like it since the graph isn't very wide.
I hope to get my 382 close to 500rwhp some day....

[ March 02, 2003, 12:53 PM: Message edited by: 383ss ]

LS1 Tech Stories

The Best V8 Stories One Small Block at Time

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Mar 3, 2003 | 04:38 AM

#29

LSs1Power

TECH Addict

iTrader: (5)

Joined: Mar 2002

Posts: 2,320

Likes: 0

From: VA

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />Originally posted by JP98SS:
 4" Mufflex = LOUD
True Duals = LOUDER

Any quiet options? <hr /></blockquote>Loud Mouth <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> and by the way very impressive numbers, Congrats.

Mar 3, 2003 | 01:26 PM

#30

JP98SS

Thread Starter

TECH Apprentice

Joined: Feb 2002

Posts: 358

Likes: 0

From: Alta Loma, CA

Re: MMS 388 Dyno Results

AF is right around 13:1. Dips down to 12.5:1 for a few hundred rpm right around 6K. BTW...this was with regular pump gas (91 octane). I bet that we could squeeze a few more hp out with race gas and more timing <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Mar 3, 2003 | 01:39 PM

#31

John B

Moderator

iTrader: (10)

Joined: Nov 2001

Posts: 3,264

Likes: 21

From: Phoenix, AZ

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />True Duals = LOUDER
Any quiet options? <hr /></blockquote>I have true duals with "X" pipe and DynoMax Super Turbo's and tailpipes after the muffler. The car is very quite except at WOT. Nothing will keep a low restriction exhaust quiet at WOT IMHO <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

Mar 3, 2003 | 01:42 PM

#32

Terry Burger

TECH Veteran

iTrader: (4)

Joined: Nov 2001

Posts: 4,712

Likes: 0

From: Simi Valley, CA

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />
Terry, your car is louder than mine. I want to be able to go WOT without alerting every cop within a 10 mile radius. Can't have fun with the police on your ***
<hr /></blockquote>I'll bet you $50 its quieter. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Mar 3, 2003 | 01:48 PM

#33

JP98SS

Thread Starter

TECH Apprentice

Joined: Feb 2002

Posts: 358

Likes: 0

From: Alta Loma, CA

Re: MMS 388 Dyno Results

When do you want to pay me Terry? We need to pick a location as well. It is too damn far for me to drive out to your place. I'll spend the $50 in gas.

Mar 3, 2003 | 02:31 PM

#34

BLUEBYU

TECH Resident

iTrader: (1)

Joined: Dec 2001

Posts: 933

Likes: 0

From: Overland Park, KS, USA

Re: MMS 388 Dyno Results

Highly recommend Hooker's catback. High flow and not much hp/tq loss. My brother's last dyno showed a 3 hp/tq drop through the catback. Very affordable, so much that I installed it with Jet Hot's coating to match everything else. Very throaty sound at cruise and does have a distinct roar at WOT. Oh yeah, awesome numbers... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Mar 3, 2003 | 02:36 PM

#35

Terry Burger

TECH Veteran

iTrader: (4)

Joined: Nov 2001

Posts: 4,712

Likes: 0

From: Simi Valley, CA

Re: MMS 388 Dyno Results

How about Thurs @ Irwindale? We just need someone with a DB gun to come out. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Mar 3, 2003 | 02:42 PM

#36

myfasstoy

Teching In

Joined: Oct 2002

Posts: 24

Likes: 0

From: Northern Cali

Re: MMS 388 Dyno Results

<blockquote>quote:<hr /> We are only running 11.3:1 compression <hr /></blockquote>JP98SS, Are you getting any KR or detonation with that CR and 91 octane? How's your idle, is it choppy with that LSA? I was told by my builder not to go over 10.5-10.6 CR for CA gas. (ARE 436)

Thanks

Mar 3, 2003 | 02:55 PM

#37

Terry Burger

TECH Veteran

iTrader: (4)

Joined: Nov 2001

Posts: 4,712

Likes: 0

From: Simi Valley, CA

Re: MMS 388 Dyno Results

I can chime in with a little info here. I run ~12.0:1 CR and with the 229v2.1 (114ls) cam I was getting a bit of ping at part throttle on 91. With the new cam (242/236 110ls) it seems to have gone away. To be safe I'd stick with 10.5-11.0 CR, and make sure you get the car dyno tuned.

Mar 3, 2003 | 03:11 PM

#38

Linear Velocity

TECH Resident

iTrader: (1)

Joined: Nov 2001

Posts: 813

Likes: 0

From: Huntington Beach, Ca

Re: MMS 388 Dyno Results

<blockquote>quote:<hr />Originally posted by Terry Burger:
 How about Thurs @ Irwindale? We just need someone with a DB gun to come out. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <hr /></blockquote>I got a gun Terry <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> and also Terry of course you are going to lose less thru a full exhaust than JP, he's making almost 60 more rwhp than you <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />