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383 headed to the dyno 8/22 #3252423
08/19/24 09:49 AM
08/19/24 09:49 AM
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JERICOGTX Offline OP
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A couple years ago, my Dad's 383 in his 1969 Super Bee started knocking. The car was parked for a year, and then I pulled the engine out of the car. The engine always had lower oil pressure than I liked at idle, but was fine under load. When I pulled the pan, everything LOOKED OK, but once disassembly was started, I found that #3 rod bearing was shot, along with #4 main. It had also egg shaped the end of the stock rod. This is the numbers matching block to my Dad's Bee, and when it was rebuilt 24 years ago, we had found a bent rod in it, and all the original piston skirts were broken. Not wanting to destroy the original block, it was best to upgrade rods, and while we are at it, I wanted to get rid of the old KB pistons. Since the crank needed work as well, it was also time to upgrade that.

This is a mild build. We reused the old cam, heads, and intake. Just looking for a good street cruiser, that runs on 91 octane gas.

Here is the break down.

383 block .045 over
Molnar 3.91 crank
Molnar Rods
SpeedTec forged pistons
10.4:1 compressiom
Edelbrock Performer RPM heads
Edelbrock Perfromer RPM intake
Old MP .484 cam
Comp Cams roller rockers
TTi 1 7/8" headers
Holley 850 DP carb
8 quart oil pan with windage tray

Who wants to guess what it makes for power?

383-5.jpgSuperBee.jpg

69 GTX 68 Road Runner
Re: 383 headed to the dyno 8/22 [Re: JERICOGTX] #3252428
08/19/24 10:05 AM
08/19/24 10:05 AM
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Park Forest, IL
slantzilla Offline
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450 horse, 485 torks.


"Everybody funny, now you funny too."
Re: 383 headed to the dyno 8/22 [Re: JERICOGTX] #3252430
08/19/24 10:09 AM
08/19/24 10:09 AM
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Heaven
EvilB1Dart Offline
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With you tuning - 495HP / 510 lb-ft on 91 pump.

Good luck!


"If you can still hear your fears - shift a gear."


Re: 383 headed to the dyno 8/22 [Re: JERICOGTX] #3252431
08/19/24 10:09 AM
08/19/24 10:09 AM
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Oregon
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AndyF Offline
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Oregon
It will make good torque, not so sure about the power with that cam and those heads. I'll guess 475 hp with 550 torque.

Re: 383 headed to the dyno 8/22 [Re: EvilB1Dart] #3252437
08/19/24 10:35 AM
08/19/24 10:35 AM
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Originally Posted by EvilB1Dart
With you tuning - 495HP / 510 lb-ft on 91 pump.

Good luck!


I'm no tuner... LOL! That's why we are bringing it to the dyno.


69 GTX 68 Road Runner
Re: 383 headed to the dyno 8/22 [Re: JERICOGTX] #3252438
08/19/24 10:39 AM
08/19/24 10:39 AM
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Stuttgart, Arkansas
rickseeman Offline
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Nice looking car


2011 Drag Pak Challenger
Re: 383 headed to the dyno 8/22 [Re: rickseeman] #3252440
08/19/24 11:05 AM
08/19/24 11:05 AM
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S.E. Michigan
ZIPPY Offline
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Plenty enough to be fun on the street. The car looks outstanding, just like everything else you work on!

I'll guess 490/520 just for fun even though I know next to nothing about dynos.

Regardless of the exact numbers achieved....anyone care to guess max power and max torque rpm?



Rich H.

Esse Quam Videri




Re: 383 headed to the dyno 8/22 [Re: ZIPPY] #3252442
08/19/24 11:07 AM
08/19/24 11:07 AM
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Posts: 13,660
Marion, South Carolina [><]
an8sec70cuda Offline
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my WAG....489 hp, 501 tq.

Ought to be a fun ride!


CHIP
'69 road runner, 440-6, 4 speed, Dana 60
'70 'cuda, 575" Hemi, 727, Dana 60
'71 Demon 340, no drivetrain, on blocks behind the barn
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
'17 Ram 1500 5.7 Hemi
Re: 383 headed to the dyno 8/22 [Re: JERICOGTX] #3252456
08/19/24 11:57 AM
08/19/24 11:57 AM
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Bend,OR USA
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Cab_Burge Offline
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You can do a lot better on that cam, they suck big time, down whiney Trust me up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 383 headed to the dyno 8/22 [Re: Cab_Burge] #3252458
08/19/24 12:10 PM
08/19/24 12:10 PM
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MN
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Originally Posted by Cab_Burge
You can do a lot better on that cam, they suck big time, down whiney Trust me up


You want to donate one? We had it. It was in the engine for 20+ years, and still has all the lobes. Budget was a concern. NOT looking for any killer numbers. Just want a nice driving street car.


69 GTX 68 Road Runner
Re: 383 headed to the dyno 8/22 [Re: JERICOGTX] #3252464
08/19/24 01:11 PM
08/19/24 01:11 PM
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United Socialist States of Ame...
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tboomer Offline
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With you building it I am sure it will do well Jeff. I will never forgot what you told me once. Sheesh! It'seal easy to spend someone else's money here!! wave


Need your rear end checked out? Contact Grizzly!!
Re: 383 headed to the dyno 8/22 [Re: tboomer] #3252474
08/19/24 01:45 PM
08/19/24 01:45 PM
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Las Vegas
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Whatever it is I am sure he will be happy with a good solid engine to be able to enjoy the car.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: 383 headed to the dyno 8/22 [Re: Al_Alguire] #3252493
08/19/24 03:05 PM
08/19/24 03:05 PM
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Weddington, N.C.
Streetwize Offline
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I think edelbrocks flow about 250-255 @.400 lift so with 453 cubes and 10.4:1 you ought to make roughly 525 LB/Ft and 490 ish HP. The chamber of the Edelblocks isn't even as good as a 67 915 IMO, I wish they would update the design. I mean look at the Trick flow Edelbrock!!

If i remember right the Factory Rockers only lift about 1.35-ish:1 so with you using Adjustable rockers (1.6's would really help) it will help the 484 cam.

The 484 is a good cam but I really used to like the Ultradyne 231/239 @.050 hydraulic in a 10:1 340/383 or 440. Idled nice and made more power than the specs would make you think it could. I'll bet the TF style chamber alone would put you over 520

Seems like it should be quite a nice street motor.



Last edited by Streetwize; 08/19/24 03:11 PM.

WIZE

World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker!

https://www.youtube.com/watch?v=-mWzLma3YGI

In Car:

https://www.youtube.com/watch?v=PjXcf95e6v0
Re: 383 headed to the dyno 8/22 [Re: Streetwize] #3252499
08/19/24 03:38 PM
08/19/24 03:38 PM
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Posts: 1,423
Johnstown
69dart Offline
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I'd guess 420 HP with the little cam.

383's rule!

My roadster has a TRW piston, stealth head combo with .600ish roller and ran 9.55 at the Nats last week - estimated 477 HP using the calculators.


33 Plymouth Roadster - 383 - 5.90 1/8th 9.58 1/4
68 Dart - 340
66 Belvedere - 400

Windy Hollow Garage - https://www.youtube.com/@windyhollowgarage
Re: 383 headed to the dyno 8/22 [Re: 69dart] #3252505
08/19/24 04:40 PM
08/19/24 04:40 PM
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Star Idaho
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67vertman Offline
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I am glad to see you got it back together again.

With that combo 464 HP and 490 ft TQ.


My Monster are real!

Living within your means makes life pretty easy.
Re: 383 headed to the dyno 8/22 [Re: 67vertman] #3252513
08/19/24 05:56 PM
08/19/24 05:56 PM
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Shelby Twp. Mi
HardcoreB Offline
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...gotta agree with some of the above, needs a solid roller about .747 lift, bigger heads MCS 4.25" and a bigger bore. But, I'm guess 501HP. Where did you put the ICL of the 484 cam?

Re: 383 headed to the dyno 8/22 [Re: Streetwize] #3252613
08/20/24 07:08 AM
08/20/24 07:08 AM
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S.E. Michigan
ZIPPY Offline
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Originally Posted by Streetwize
I think edelbrocks flow about 250-255 @.400 lift so with 453 cubes and 10.4:1 you ought to make roughly 525 LB/Ft and 490 ish HP.




Same thought process here, and good to know we're on the same page.

(Actually hoping for more but trying to be realistic).


Rich H.

Esse Quam Videri




Re: 383 headed to the dyno 8/22 [Re: ZIPPY] #3252715
08/20/24 04:31 PM
08/20/24 04:31 PM
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Plymouth, MI
Blusmbl Offline
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Agree on everyone, should be an awesome, no maintenance street motor!

503 hp/510 tq.


'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118
Re: 383 headed to the dyno 8/22 [Re: Blusmbl] #3252919
08/21/24 04:40 PM
08/21/24 04:40 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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Originally Posted by Blusmbl
Agree on everyone, should be an awesome, no maintenance street motor!

503 hp/510 tq.


Looks like a solid guess.

I’m going to be less specific………around 500/500.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: 383 headed to the dyno 8/22 [Re: fast68plymouth] #3252957
08/21/24 08:43 PM
08/21/24 08:43 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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I think that cam will keep hp below 475, but torque will be great down low.


8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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