Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
#2048971
04/07/16 04:48 PM
04/07/16 04:48 PM
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Joined: Jun 2010
Posts: 462 Stockholm, Sweden
fed
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mopar
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Would this Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590 fit on a 344 with ported J heads 2,02-1,60 M-1 intake Holley 650Hp Headers in a -65 Valiant. 727, shiftkit and 8 3/4 with 5,38 29X10,5 Bracket/stripcar.
Last edited by fed; 04/07/16 04:49 PM.
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2048973
04/07/16 04:51 PM
04/07/16 04:51 PM
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Joined: Sep 2014
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madscientist
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With that gear you could do it. Just make sure you have piston to valve clearance. And retainer to guide clearance. You would be running 10*'s more at .050 than I am, and about .030 less lift.
I almost bought that cam but they were on back order so I ordered a custom cam.
Edit: FWIW I think your carb is too small. You could use an 850 pretty easily. Hope you have at least 1.75 headers, if not bigger.
Last edited by madscientist; 04/07/16 04:53 PM.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: madscientist]
#2048989
04/07/16 05:17 PM
04/07/16 05:17 PM
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Joined: Jun 2010
Posts: 462 Stockholm, Sweden
fed
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Last cam went flat. I do have race fenderwell headers. I have the cam, came with the car.
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2048997
04/07/16 05:33 PM
04/07/16 05:33 PM
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Joined: Jun 2010
Posts: 462 Stockholm, Sweden
fed
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I have a Comp Cams hydraulic cam as well! Xtreme Hi-Lift, XE285HL Serious Street/Strip
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049003
04/07/16 05:39 PM
04/07/16 05:39 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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I never used that cam.. do you know the duration at .050... is this a 1/4 mile or 1/8 mile car.. if its a 1/4 I dont think it will rev high enough with that gear... but with that steep of gear I'm thinking 1/8 car EDIT By the way... love the chopped roof line
Last edited by MR_P_BODY; 04/07/16 05:45 PM.
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049019
04/07/16 05:56 PM
04/07/16 05:56 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
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It's 270 @ .050, 106lsa I would want pretty good compression and plenty of stall if I were hoping to be satisfied with the results.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049020
04/07/16 05:56 PM
04/07/16 05:56 PM
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Joined: Jun 2010
Posts: 462 Stockholm, Sweden
fed
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Duration at .050'': 265°/265° Im just trying to get something together to go racing while I build my fuelaltered! Mostly 1/4 mile!
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049024
04/07/16 06:01 PM
04/07/16 06:01 PM
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Joined: Jun 2010
Posts: 462 Stockholm, Sweden
fed
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Maybe I use the Comp Cams hydraulic cam insteed! Xtreme Hi-Lift, XE285HL duration at 050 241/247, lift 0,545/0,545 This is a flattop piston engine. Runs high in the front sometimes too!
Last edited by fed; 04/07/16 06:03 PM.
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049034
04/07/16 06:08 PM
04/07/16 06:08 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
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I think you'll be disappointed trying to use that hyd cam with 5.38 gears. Those xe/hl cams usually struggle to get past 6000rpm.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049041
04/07/16 06:15 PM
04/07/16 06:15 PM
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Joined: Jun 2010
Posts: 462 Stockholm, Sweden
fed
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I will save the hydraulic for a street stroker then!
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049046
04/07/16 06:20 PM
04/07/16 06:20 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
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It's like many things that involve racing.......... The worst part to use in any situation is...... The one you already own.
Provided you have enough spring, and retainer to seal clearance, and v/p clearance, a couple of decent cams for a flat top 340 would be a Comp 20-635-5, or a 20-618-5.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049054
04/07/16 06:26 PM
04/07/16 06:26 PM
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Joined: Jun 2010
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fed
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Yes I know! To many leftovers from different builds! Have a pair of W-2 also if they fit the cam better! But then the headers dot fit well on the exhaustport!
Cuda, -70 Valiant-65 AWB, Valiant Signet200 -65 Topchopped dragcar. Topolino Fuel Altered. NostalgiaFED Sold, SuperComp Bantam Altered, Sold Ex Harlan Thompsons Nitro funny car American Graffiti Sold,
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049111
04/07/16 07:13 PM
04/07/16 07:13 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Yes I know! To many leftovers from different builds! Have a pair of W-2 also if they fit the cam better! But then the headers dot fit well on the exhaustport! Myself... I would run the W-2s.. cut the flanges off the headers and weld on new ones for the W-2s.. its a pretty simple job IF the tubes are big enough for the rpm you will run.. as Fast said.. forget the hyd cam.. it'll never make the rpms you need EDIT For the headers.. I normally make a mandrel that I would drive into the tubes at the flange for the shape of the port.. pretty simple.. heat some times was needed.. most of the time it wasnt
Last edited by MR_P_BODY; 04/07/16 07:22 PM.
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049160
04/07/16 08:06 PM
04/07/16 08:06 PM
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Joined: Jun 2010
Posts: 311 Colorado Springs, Colorado
Dartthunder340
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Fed,your combination is very similar to what I'm running in a Dart. I would use the W2 heads also, have them on mine and very happy with them. I haven't put in the 5.38's yet, still with 5.13's. Should also add that I'm pretty happy with the .590 Purple Shaft. Pretty old school build but it's proven and I am enjoying it...when I can get away to race!
Last edited by Dartthunder340; 04/07/16 08:09 PM.
Better get inside Ma. Looks like a storm's comin'.
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049257
04/07/16 10:07 PM
04/07/16 10:07 PM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
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I used the 590 purple shaft on my big block tunnel ram. Shifted at 6,800 rpm, through the lights at 6,500 rpm. 3150 pounds 4.88 gears 10.80's. Very dependable, consistant times, easy maintenance.
[image][/image]
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2049715
04/08/16 02:42 PM
04/08/16 02:42 PM
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Joined: Dec 2009
Posts: 20,647 in a cattle trailer down by th...
Guitar Jones
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Paddle faster! I hear banjo music!
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in a cattle trailer down by th...
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It's very difficult to get enough valve spring and installed height on those iron heads to really use that cam.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion. 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: Guitar Jones]
#2050080
04/08/16 11:45 PM
04/08/16 11:45 PM
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Joined: Oct 2007
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BIG DRAG
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It's very difficult to get enough valve spring and installed height on those iron heads to really use that cam. I never had a problem. Put 2 motors together that were pretty much identical bolth with that cam. Springs were never a problem....
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: fed]
#2051273
04/10/16 08:10 PM
04/10/16 08:10 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
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People always crack jokes about purple shaft cams but I loved my 590 in my old 451" low deck with Eddy heads, it went 9.80's in my old DartSport and was very streetable. That's as fast as I wanted to go on a tight budget.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Mopar Perf. ''Purple Shaft'' Mechanical Camshaft 312/590
[Re: BIG DRAG]
#2054647
04/14/16 11:18 PM
04/14/16 11:18 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
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I ran a similar combination. Stock stroke 360, ported j heads, 590 cam, victor manifold. 904, 4.88 gear, 65 valiant. Ran 10.20's @ 130... i think you have too much gear like others have said. That's a good running combo. When I ran the 557 purpleshaft in my 340 years ago I was running 11.70's and there was a guy with a 340 Dart there that was running a very similar combo but he was running the 590 cam and was going 11.20's. That's kinda what made me want to try the 590 in my big block car and it ran extremely well. It's hard to go wrong with a cam and lifter kit for around $170! Fast68Plymouth recommended a couple Comp cams so I would definitely look into those.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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