Cam Selection - strong street 383 w/Edelbrock 75cc heads
#1993424
01/18/16 05:07 PM
01/18/16 05:07 PM
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Joined: Apr 2006
Posts: 1,014 Central US
grancuda
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OP
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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 FB 383/727 1967 Chevy C10 Short Stepper LS1/TKO 600/7675 Precision 1979 Ford F150 LWB 300 / 4 speed 1996 Toyota Land Cruiser 2024 Ford Bronco Badlands Sasquatch 2022 Kawasaki Z900RS
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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
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Joined: Jan 2003
Posts: 14,531 So. Burlington, Vt.
fast68plymouth
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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.
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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
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
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The Mopar 284/484 hydraulic will work well in that engine.
Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.
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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
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Joined: Jan 2003
Posts: 75,274 A gulag near you.
JohnRR
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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.
Mainstream Media is the new Pravda
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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
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Joined: Aug 2003
Posts: 43,719 Bend,OR USA
Cab_Burge
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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 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 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
Last edited by Cab_Burge; 01/19/16 10:50 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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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
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
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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.
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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
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Joined: Apr 2006
Posts: 1,014 Central US
grancuda
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OP
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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 FB 383/727 1967 Chevy C10 Short Stepper LS1/TKO 600/7675 Precision 1979 Ford F150 LWB 300 / 4 speed 1996 Toyota Land Cruiser 2024 Ford Bronco Badlands Sasquatch 2022 Kawasaki Z900RS
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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
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Joined: Jan 2003
Posts: 9,924 Weddington, N.C.
Streetwize
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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.
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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
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Joined: Apr 2005
Posts: 1,509 TN
SCATPACK 1
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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
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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
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
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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.
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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
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Joined: Apr 2006
Posts: 1,014 Central US
grancuda
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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 FB 383/727 1967 Chevy C10 Short Stepper LS1/TKO 600/7675 Precision 1979 Ford F150 LWB 300 / 4 speed 1996 Toyota Land Cruiser 2024 Ford Bronco Badlands Sasquatch 2022 Kawasaki Z900RS
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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
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
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Val-haul-ass... eventually
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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.
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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
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Joined: Feb 2003
Posts: 2,819 Sobieski Wi
bee1971
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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
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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
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Joined: Nov 2008
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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
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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
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Joined: Jan 2003
Posts: 6,531 Jacksonville, FL
Chris2581
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I'm tellin' ya that 284/484 cam works great in a 383.
Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.
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