Page 5 of 5 < 1 2 3 4 5
Topic Options
#2548511 - 09/10/18 05:24 PM Re: What went wrong? [Re: Shatar4]
GY3 Offline


Registered: 12/13/13
Posts: 2524
Loc: Wichita
Jeez, what a stupid mistake!

I've seen combos that don't run like they should and people always blame the cam. I always ask if they degreed it and 9 times out of 10 they say, "I made sure and lined up the dots!". blush
_________________________
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's
10.69 @ 128mph with 150hp shot of nitrous


Top
#2548515 - 09/10/18 06:03 PM Re: What went wrong? [Re: GY3]
pittsburghracer Offline
Slowride

Registered: 02/02/05
Posts: 13603
Loc: PA.
For you guys that struggle with degreeing in cams buy yourself this tool. It sure make the job a lot easier.



https://www.summitracing.com/oh/parts/cca-4926
_________________________
1970 Duster
Edelbrock headed 408
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Untitled by John Cadamore, on Flickr





Top
#2548518 - 09/10/18 06:35 PM Re: What went wrong? [Re: RATTRAP]
Shatar4 Offline
super stock

Registered: 05/03/04
Posts: 1025
Loc: Howell, Mi
Originally Posted By RATTRAP
Originally Posted By Shatar4
Anyone know of one that is around the Detriot area? Called Jakes this morning and they were 3-4 weeks out.




You an try Full Throttle racing In Fraser,MI they have a chassis dyno.


Got it covered! Jake was awesome and fit me in sooner! 👍

Top
#2548524 - 09/10/18 06:56 PM Re: What went wrong? [Re: Shatar4]
MR_P_BODY Offline
Master

Registered: 06/13/03
Posts: 50965
Loc: Romeo MI
Glad you got it squared away.. very nice ride
wave
_________________________

W-9 8.94 @ 151 NOW ON E-85
Mike "Raff"...(180)Watching over us
CAR IS FOR SALE

Top
#2548572 - 09/10/18 09:19 PM Re: What went wrong? [Re: Shatar4]
JAKE68 Offline
pro stock

Registered: 12/29/05
Posts: 1371
Loc: Shelby mi.
I got him coming in Thursday.
_________________________
JAKES AUTOMOTIVE

Top
#2548603 - 09/10/18 10:27 PM Re: What went wrong? [Re: JAKE68]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31552
Loc: Bend,OR USA
Make sure you LET him ring its tale whistling wrench hammer
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Top
#2549718 - 09/13/18 04:49 PM Re: What went wrong? [Re: Shatar4]
Shatar4 Offline
super stock

Registered: 05/03/04
Posts: 1025
Loc: Howell, Mi
Just got home from the dyno at Jakes. First I have to say Gary at Jakes is awesome fortaking care of me. So now the numbers. For a Stroker motor that has only parts from out of the box I think it’s pretty good adding in the power train lose.
414 hp and 429 torque.


Attachments
7A180E15-ADD1-481F-8C94-78666A29E432.jpeg




Edited by Shatar4 (09/13/18 05:28 PM)

Top
#2549754 - 09/13/18 07:05 PM Re: What went wrong? [Re: Shatar4]
Superfreak Offline
master

Registered: 11/08/08
Posts: 3638
Loc: the great wet north
So about 484hp
_________________________
"Too much to do and not enough time to do it"

Top
#2549798 - 09/13/18 09:43 PM Re: What went wrong? [Re: Shatar4]
davenc Offline
mopar

Registered: 05/24/05
Posts: 547
Loc: NC, USA
Looks like there is more power to be had with further carb tuning. Did you get a chance to do any tuning when you had the car on the rollers?

Top
#2549809 - 09/13/18 09:58 PM Re: What went wrong? [Re: davenc]
RustyM Offline
enthusiast

Registered: 02/24/17
Posts: 329
Loc: Texas
Agree with Dave.
Was that with an air cleaner on it?

I cannot remember if this is a carb or efi?
Wondering if valve train is getting unstable at 5k and above as well.
Certainly seems really lean to me.



Edited by RustyM (09/13/18 10:01 PM)

Top
#2549853 - 09/14/18 02:25 AM Re: What went wrong? [Re: pittsburghracer]
451Mopar Offline
master

Registered: 05/19/08
Posts: 5012
Loc: Aurora, Colorado
Originally Posted By pittsburghracer
For you guys that struggle with degreeing in cams buy yourself this tool. It sure make the job a lot easier.

https://www.summitracing.com/oh/parts/cca-4926


That tool is nice for checking cam centerline. I have seen it mis-used trying to set/measure opening and closing events or duration. The results will be slightly off because the follower diameter of the tool is smaller (0.841" is what mine measured) than a real MOPAR lifter (0.904".)
I don't know the radius used for the rounded follower used for roller cams? If I want to measure duration or opening and closing events, I use the actual lifter the engine will be using as the roller cam lifters may have different diameter rollers.

Top
#2549917 - 09/14/18 09:53 AM Re: What went wrong? [Re: Shatar4]
fast68plymouth Offline
I Live Here

Registered: 01/20/03
Posts: 11422
Loc: So. Burlington, Vt.
Originally Posted By Shatar4
Well after i took the motor back out and gave it to the engine builder, he found that he acidently put the timing off by one tooth. I took the heads off and the valves were kissing the pistons leaving a half moon mark on them.


So, two things that I would consider pretty much “mandatory” for a build like this obviously didn’t get done.
Cam didn’t get degreed, and valve to piston clearance not verified.

I dynoed a very mild 505 last fall that was similar, but milder.
Stage 1 rpm heads, .483 lift hyd cam, original Torker, 850vs carb, 1-7/8” headers.

I told him it would make about 600ft/lbs and 500hp.
It made 628tq/515hp.

With an RPM intake and the OP’s cam I would have been looking for another 40-50hp.

Back in about 1990, on a 500hp 440 I tested an original Torker against a Torker II.
The Torker II had noticeably better top end power than the original Torker, which resulted in a peak gain of about 15hp, but at the top of the run it was more like a 30hp difference.
The original Torker had better bottom end and made about 15ft/lbs more peak tq.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

Top
#2550046 - 09/14/18 04:01 PM Re: What went wrong? [Re: RustyM]
Shatar4 Offline
super stock

Registered: 05/03/04
Posts: 1025
Loc: Howell, Mi
Originally Posted By RustyM
Agree with Dave.
Was that with an air cleaner on it?

I cannot remember if this is a carb or efi?
Wondering if valve train is getting unstable at 5k and above as well.
Certainly seems really lean to me.


The air cleaner was not on it. It is a 850 carb.

Top
#2550049 - 09/14/18 04:08 PM Re: What went wrong? [Re: fast68plymouth]
Shatar4 Offline
super stock

Registered: 05/03/04
Posts: 1025
Loc: Howell, Mi
Originally Posted By fast68plymouth
Originally Posted By Shatar4
Well after i took the motor back out and gave it to the engine builder, he found that he acidently put the timing off by one tooth. I took the heads off and the valves were kissing the pistons leaving a half moon mark on them.


So, two things that I would consider pretty much “mandatory” for a build like this obviously didn’t get done.
Cam didn’t get degreed, and valve to piston clearance not verified.

I dynoed a very mild 505 last fall that was similar, but milder.
Stage 1 rpm heads, .483 lift hyd cam, original Torker, 850vs carb, 1-7/8” headers.

I told him it would make about 600ft/lbs and 500hp.
It made 628tq/515hp.

With an RPM intake and the OP’s cam I would have been looking for another 40-50hp.

Back in about 1990, on a 500hp 440 I tested an original Torker against a Torker II.
The Torker II had noticeably better top end power than the original Torker, which resulted in a peak gain of about 15hp, but at the top of the run it was more like a 30hp difference.
The original Torker had better bottom end and made about 15ft/lbs more peak tq.

So do you think if I change the intake to a Edelbrock RPM I would gain some?

Top
#2550057 - 09/14/18 04:35 PM Re: What went wrong? [Re: Shatar4]
fast68plymouth Offline
I Live Here

Registered: 01/20/03
Posts: 11422
Loc: So. Burlington, Vt.
“Some”?
Sure...... but mostly in the lower part of the curve is what I’d expect.

Peak hp would likely be within 10.

Way more work involved, but I’d expect better results out of some head porting instead.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

Top
#2550142 - 09/14/18 09:34 PM Re: What went wrong? [Re: Shatar4]
davenc Offline
mopar

Registered: 05/24/05
Posts: 547
Loc: NC, USA
Originally Posted By Shatar4

So do you think if I change the intake to a Edelbrock RPM I would gain some?


If the dyno operator has confidence in the AFR values posted in that dyno chart, you should be able to pick up some decent power jetting up on the carb. It looks pretty lean on those runs.

The timing might also be more optimized once the AFR was richer.


Edited by davenc (09/14/18 09:34 PM)

Top
#2550529 - 09/16/18 01:40 AM Re: What went wrong? [Re: davenc]
Shatar4 Offline
super stock

Registered: 05/03/04
Posts: 1025
Loc: Howell, Mi
Originally Posted By davenc
Originally Posted By Shatar4

So do you think if I change the intake to a Edelbrock RPM I would gain some?


If the dyno operator has confidence in the AFR values posted in that dyno chart, you should be able to pick up some decent power jetting up on the carb. It looks pretty lean on those runs.

The timing might also be more optimized once the AFR was richer.

The jets at 80 primary 88 secondary.

Top
Page 5 of 5 < 1 2 3 4 5

Advertisement
Forum Stats
25,578 Registered Members
32 Forums
194,817 Topics
2,275,776 Posts

Most users ever online: 1,424 @ 06/20/18 07:18 PM
Moparts Newest Topics
Electronic Evapo-Rust...
by rarefish
Today at 03:59 PM
If you dont visit the general forum, Secret Santa is now
by hp383
Today at 02:49 PM
1971 GTX factory sunroof
by biggE
Today at 02:42 PM
Cerveny Collection....Destro
yed

by tommyg
Today at 02:39 PM