Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Cam Selection - strong street 383 w/Edelbrock 75cc heads #1993424
01/18/16 05:07 PM
01/18/16 05:07 PM
Joined: Apr 2006
Posts: 1,001
Central US
grancuda Offline OP
super stock
grancuda  Offline OP
super stock

Joined: Apr 2006
Posts: 1,001
Central US
Building a motor for my daily driver '67 383 Barracuda.

Car has a 727 & 4.10 gears with 28" tires & torque converter is a factory style high stall Dacco 764.

Engine is getting the basic clean up/machining now.
I bought 0.030 over forged flat top aluminum pistons w/ 1.920" compression distance.
I bought an Eddelbrock Performer RPM intake
I bought a pair of TTI 1 3/4" shorty headers
Planning to get the E-Street 75cc heads, thought about 440 Source Stealth heads, leaning towards the Edelbrocks.
Planning on the thin gaskets(not steel) & from what I can tell compression should be a little over 10:1.

Looking for a cam for a car that spends 95% of its time on the street & lots of driving-15k a year. Planning on running stock rockers & stock style push rods. Just don't want to oversize the cam & give up useable power on the street. I have a set of 516 heads that could be built but think for the money it's probably better running aluminium.

Any tips on cam selection for this combo?


1967 Barracuda Formula S 383
1967 Chevy C10 Short Stepper
1980 Macho Power Wagon LWB 318
2021 Toyota Supra
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1993433
01/18/16 05:21 PM
01/18/16 05:21 PM
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
F
fast68plymouth Offline
I Live Here
fast68plymouth  Offline
I Live Here
F

Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
The only real possible "issue" I see is the stock rockers. What can happen with those when you start running high lift cams with elevated spring pressures, they can fail in the pushrod cup area. Especially ones that already have lots of miles on them.
Since you'll be putting a lot of mikes on it, I'd stick with cams that have some more moderate lobe designs and limit the lift to .500 or less.
You could look at the cam grinder of your choices catalog and pick something out pretty easily.

Most of the cams mentioned in the 440 smogger cam thread would also apply here, although an lsa of 112 would be as wide as I would suggest for your build, preferably 108-110.

I think I'd use something like the smallest Howard's Rattler.
281/289 adv, 227/235 @ .050, .480/.488, 109lsa.

Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: fast68plymouth] #1993451
01/18/16 05:45 PM
01/18/16 05:45 PM
Joined: Jan 2003
Posts: 9,866
Weddington, N.C.
Streetwize Offline
master
Streetwize  Offline
master

Joined: Jan 2003
Posts: 9,866
Weddington, N.C.
Fast,

I was thinking of the old Crower 271HDP but cut on 108, as I remember it was something like 222/234 @.050 .496/.486 (ish) lift.

Hank, (Mopork) had one in his 71 Coronet Cop car and he loved it, real similar build but would be enhanced by the Eddy heads and the shorty headers. That's a really sweet cam. The Howards looks really close to it too.


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: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1994308
01/19/16 08:03 PM
01/19/16 08:03 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
master

Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
The Mopar 284/484 hydraulic will work well in that engine.


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1994338
01/19/16 08:46 PM
01/19/16 08:46 PM
Joined: Jan 2003
Posts: 74,907
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 74,907
U.S.S.A.
If you are in the process of machining make sure you have the block square deck and set the pistons at zero deck , 383's need all the help in the compression dept. they can get.

If the pistons don't have valve reliefs make sure you pay attention to piston to valve clearance.


running up my post count some more .
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: Chris2581] #1994433
01/19/16 10:48 PM
01/19/16 10:48 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Originally Posted By Chris2X81
The Mopar 284/484 hydraulic will work well in that engine.

I never seen any 383 motor run well with one of those dang Mopar 284/484 cam, even when they are degreed in as compared to any decent after market cam with similar lift and duration. I do know of several Mopar car owners that thought there motors ran okay, even 440 pmp gas motors, with that cam until they got a better cam with similar numbers shruggy work
They are cheap to buy like a lot of the Mopar cam kits are, but do you really want a cheap cam and kit in your motor or a good one shruggy
OP, I have heard a lot of people on this forum say the Mopar "509" hydrualic kit is a really good cam for the street work

Last edited by Cab_Burge; 01/19/16 10:50 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1994453
01/19/16 11:02 PM
01/19/16 11:02 PM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
A
ademon Offline
master
ademon  Offline
master
A

Joined: Sep 2004
Posts: 6,906
IL, Aurora
The voodoo cam worked nice in my 383, was very surprised with the mid range power and torque! Forgot the PN but it was 220/226 @ .050 and lift was 475/494 at 112 lsa. I do like that crower one listed above with your 4.10 and headers.

Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1995126
01/20/16 08:20 PM
01/20/16 08:20 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
master

Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Cab, I suggested the Mopar cam because I've used it in my own 383 and it worked very well. "Cheap cam"?? That cheap cam went 11.60's in my Demon on pump gas.


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: Streetwize] #1995302
01/21/16 01:48 AM
01/21/16 01:48 AM
Joined: Apr 2006
Posts: 1,001
Central US
grancuda Offline OP
super stock
grancuda  Offline OP
super stock

Joined: Apr 2006
Posts: 1,001
Central US
Originally Posted By Streetwize
I was thinking of the old Crower 271HDP but cut on 108, as I remember it was something like 222/234 @.050 .496/.486 (ish) lift.


Does the 108 make it take advantage of the compression in the mid range & give it a more responsive low to mid?


1967 Barracuda Formula S 383
1967 Chevy C10 Short Stepper
1980 Macho Power Wagon LWB 318
2021 Toyota Supra
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1995548
01/21/16 03:39 PM
01/21/16 03:39 PM
Joined: Jan 2003
Posts: 9,866
Weddington, N.C.
Streetwize Offline
master
Streetwize  Offline
master

Joined: Jan 2003
Posts: 9,866
Weddington, N.C.
It'll be just a bit choppier and sound more aggressive and (more importantly) with a short stroke motor like a 383 it'll kick in a bit quicker and harder so the roll-on power (upper bottom through mid range) will be quicker. The standard off the shelf 271HDP is cut on a 112 and in at 107, this cam on the 108 spread 105ICL just works really nice in 383's and 400's. On 112 it's an awesome stock replacement cam for a 440 Six pack or 440 with bolt-ons. Crower Hydraulic lobes just always work great in mopars from my experience.

Last edited by Streetwize; 01/21/16 03:41 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: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #1996022
01/22/16 12:26 AM
01/22/16 12:26 AM
Joined: Apr 2005
Posts: 1,505
TN
S
SCATPACK 1 Offline
pro stock
SCATPACK 1  Offline
pro stock
S

Joined: Apr 2005
Posts: 1,505
TN
Originally Posted By grancuda
Building a motor for my daily driver '67 383 Barracuda.

Car has a 727 & 4.10 gears with 28" tires & torque converter is a factory style high stall Dacco 764.

Engine is getting the basic clean up/machining now.
I bought 0.030 over forged flat top aluminum pistons w/ 1.920" compression distance.
I bought an Eddelbrock Performer RPM intake
I bought a pair of TTI 1 3/4" shorty headers
Planning to get the E-Street 75cc heads, thought about 440 Source Stealth heads, leaning towards the Edelbrocks.
Planning on the thin gaskets(not steel) & from what I can tell compression should be a little over 10:1.

Looking for a cam for a car that spends 95% of its time on the street & lots of driving-15k a year. Planning on running stock rockers & stock style push rods. Just don't want to oversize the cam & give up useable power on the street. I have a set of 516 heads that could be built but think for the money it's probably better running aluminium.

Any tips on cam selection for this combo?


Your build sounds exactly like a friend of mine. He has a 400 with stock heads, KB pistons and runs a purple shaft 509/292 duration cam. Car sound great is super responsive and turns heads everywhere he goes.


Old Geezer Racing
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: SCATPACK 1] #1996423
01/22/16 05:29 PM
01/22/16 05:29 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
I Live Here
D

Joined: Jan 2003
Posts: 16,376
Well, now we have the .509 cam post out of the way...............

Anyone for the .474?

R.

Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: JohnRR] #1997751
01/24/16 04:34 PM
01/24/16 04:34 PM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
master
451Mopar  Offline
master

Joined: May 2008
Posts: 5,399
Aurora, Colorado
Originally Posted By JohnRR
If you are in the process of machining make sure you have the block square deck and set the pistons at zero deck , 383's need all the help in the compression dept. they can get.

If the pistons don't have valve reliefs make sure you pay attention to piston to valve clearance.


I agree. If you are using the flat top pistons with no valve reliefs, you can't run a large duration cam because of the piston to valve clearance. My old 383 did use the Crower 271HDP cam, and had good mid/upper power to 6,000 RPM. I had a stock converter so it was lazy off the line, I really needs a higher stall converter.
I do like the Lunati Voodoo cams. Had good results with the 262/268 cam in a 400 street engine.

Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #2034532
03/19/16 04:22 PM
03/19/16 04:22 PM
Joined: Apr 2006
Posts: 1,001
Central US
grancuda Offline OP
super stock
grancuda  Offline OP
super stock

Joined: Apr 2006
Posts: 1,001
Central US
Getting back into this. My block should be done from the machinist this coming week & the heads will be here next week as well. Still undecided & not sure really what to go with.


1967 Barracuda Formula S 383
1967 Chevy C10 Short Stepper
1980 Macho Power Wagon LWB 318
2021 Toyota Supra
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #2034546
03/19/16 04:50 PM
03/19/16 04:50 PM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
B
BradH Offline
Taking time off to work on my car
BradH  Offline
Taking time off to work on my car
B

Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
Something off the shelf? With limited stall and shorty headers I'd think Hughes' 2024 on 111 LSA would be pretty drivable for your 95% street use.

I over-cammed a 383 4-speed B-body with 4.10s (MP .484" on 108 LSA) and it didn't run much better MPH on the track than the much smaller Isky it replaced.

Last edited by BradH; 03/19/16 05:39 PM.
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #2034551
03/19/16 04:57 PM
03/19/16 04:57 PM
Joined: Feb 2003
Posts: 2,810
Sobieski Wi
B
bee1971 Offline
master
bee1971  Offline
master
B

Joined: Feb 2003
Posts: 2,810
Sobieski Wi
Remember There Are Two Versions Now Of The Old School Mopar 284/484 Purple Cam Shaft

Most Didn't Have That Option Many Many Moons Ago

108 Centerline Lobe Seperation 284/484
114 Centerline Lobe Separation 284/484

Last edited by bee1971; 03/19/16 04:59 PM.

1971 Dodge Charger Superbee
2011 Ram Sport 1500 Quad Cab Deep Water Blue Loaded
Siberian Huskies
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: bee1971] #2034559
03/19/16 05:19 PM
03/19/16 05:19 PM
Joined: Nov 2008
Posts: 1,565
tennessee
P
pushbutton Offline
pro stock
pushbutton  Offline
pro stock
P

Joined: Nov 2008
Posts: 1,565
tennessee
Originally Posted By bee1971
Remember There Are Two Versions Now Of The Old School Mopar 284/484 Purple Cam Shaft

Most Didn't Have That Option Many Many Moons Ago

108 Centerline Lobe Seperation 284/484
114 Centerline Lobe Separation 284/484


I would stay away from the 108 CL in a 383. 68* overlap and 241@.050

Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #2034616
03/19/16 06:41 PM
03/19/16 06:41 PM
Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
Chris2581 Offline
master
Chris2581  Offline
master

Joined: Jan 2003
Posts: 6,531
Jacksonville, FL
I'm tellin' ya that 284/484 cam works great in a 383.


Nautilus Racing-
We use Superformance gaskets and Turbo Action converters/products.
Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: grancuda] #2034623
03/19/16 06:55 PM
03/19/16 06:55 PM
Joined: Jun 2008
Posts: 3,913
usa
L
lewtot184 Offline
master
lewtot184  Offline
master
L

Joined: Jun 2008
Posts: 3,913
usa
back in the day when i was beating on a 383 4spd road chicken i used an old crower 201hj, 284/ .480 lift, 228@.050, 110 lsa. i tried different cams and all i did was screw the torque up. very good 383 street cam. i'm pretty sure that crower grind is long gone but a simple comp cams 280mag would be a perfect substitute. i'd also think about a comp 268xs or 282/.495 if you can get yourself to try a small solid.

Re: Cam Selection - strong street 383 w/Edelbrock 75cc heads [Re: lewtot184] #2034732
03/19/16 10:25 PM
03/19/16 10:25 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
As for the Mopar cams I have run a few of them and they all ran well. I ran the old 108 LSA .484 MP cam in my old 383 Dart. It was a mild build with sock pistons and 9.5 comp using iron 452 heads. It had the RPM intake and a 750 DP. With a 727 and 3.91 gears it ran a best of 12.31 @110. And it had a Turbo Action 3000 tight 10" converter.
I ran the MP .474 cam in a very stock 340 Dart that ran 13.49 @ 105 capped up on slippery street tires many years ago. It really had great low end pick up with the .474 cam.
I also ran the MP .557 solid cam in a 383 Cuda that was an average build with ported 906 heads and 9.5 comp. It had the TM6 intake and a 700 DP with 4.56 gears and a Turbo Action 3800 converter. That Cuda ran 11.40's @ 117. I was very pleased how all of them cars ran as none were very stout builds.
With the converter you have I would not use the MP .484 as I feel you would need more converter for it. The MP .474 cam should work nicely in your combo.
You could also talk to Dwayne Porter and let him tell you what would work good for your combo as he is very good and knows what he is talking about. Good luck what ever you decide. Ron

Page 1 of 2 1 2






Powered by UBB.threads™ PHP Forum Software 7.7.1