72ScampTramp
Scamp Tramp
Welcome back stroker.
Just a 284-484?
- Thread starter joedart
- Start date
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Thanks.
I did a cheap 440 for a friends all steel '67 dart, stock bottom end, ported 915's, Street Dominator intake, 850 Holley. I used the .484" cam, stock rockers. Without even a jet change, it ran 12.30's at 108 on used dirt track tires with 3.23 gears in the rear. A switch to 4.10's got 12.1 at 110 mph. Shift point was 5,500 rpms. I never got to see a higher shift point tried, or any tuning done. There was a few tenths left just in the launch in my opinion. I figured an 11.50 car dialed in.
Welcome back Stroker. The 284/484 was designed to be a RV cam for 360's in 4 wheel drive pick up's. They make torque and with the right combination you guys are getting some pretty good times at the ol' drag strip. As we all know, cams are a tough call. I read here a long time ago, choosing between 2 cams, take the smaller one. Bigger is not always better. toolman
RV cam for 360s in a 4 wheel drive?.....have you ever used one before?
you can barely get the power brakes to work ......
*P4120231 284/284 68 108 .484/.484 P4120249 2600-6000 Drag mod. comp w/ auto or 4 speed
abdywgn
dismantler
my combo with 484 cam, 69 Dart,3.23 with 7"X27" slicks ran 13.18 @ 108 in third gear. stock 68 340 short block and oil pan,windage tray with hi-volume oil pump. X heads with stock size valves,shaved every time they came off. had to surface intake side to get bolts to line up.stock valve train with CC springs,retainers,hrdnd keepers.LD340 with 3310-2 with metering plate,run with air cleaner on,no scoop.1-3/4" Hooker 5204's with 12" 2-1/2" extensions.MP vacuam dist with chrome box and stock coil,8.8mm ACCEL solid core wires.No mech fuel pump,Carter 4594(?) in back with -8 line to the regulator,3/8" line with 2 fuel filters.cam installed at 108-1/2,when it got hard to start,replaced the chain.Engine had problems but ran strong:needed adjustable rockers;wiped guides out with pushrods being too long.Black secondary spring in carb,rear barrels never fully opened if just barely.I myself could not shift.Never pocket ported heads,only grinding was for valve seats.I ran a Hays S/S pressure plate and disc,never slipped,even side-stepping at 6500(thats what the tach said).car was basically gutted,bench seat,door panels,dash pad,all steel,steel rear rims with slicks and tubes. CONT'D
abdywgn
dismantler
15 X 3.5" Ansens, 4 wheel drum brakes, 6 cylinder torsion bars, 002 and 003 rear springs,adjustable pinion snubber, long shocks from parts store, worn out shocks front,manual steering. so why could his 360 not make 450hp? with enough time spend on the combo, don't you think it's possible? if my old clunker ran lo 13's with problems, what would a similar 360 short block engine with Magnum heads and air-gap be good for? 360 has more torque than the 340 to get it moving quicker, lighter pistons for quicker revs.anywho, thanks for letting me put in my 2 cents worth. will give refund with SASE. Thanks! BOb
Yes. Mike may have been remembering that there were TWO different 284/484 cams many years ago. One ground on 108, like you describe and the other ground on 112. that 112 would not be too bad in a 4X4.
Thrashard340
Well-Known Member
My friend ran this cam in the early 90's. It was in a stock headed 360. No porting whatsoever, just a 3 angle valve job. The motor was around 9.5:1 compression. This went into a 1975 Dart with 3.23's or 3.55's and ran mid-13's. No slicks. Just BFG street radials, so traction was an issue.
Hot Rod Magazine at the time also dropped a Mopar 360 crate motor into a Duster and went 12.99 with 4.10 gears. These were pre-Magnum crate motors and rated around 375 HP. I think they were swirl port heads, but unmodified.
With porting work, this cam should get you over the 400HP mark.
Hot Rod Magazine at the time also dropped a Mopar 360 crate motor into a Duster and went 12.99 with 4.10 gears. These were pre-Magnum crate motors and rated around 375 HP. I think they were swirl port heads, but unmodified.
With porting work, this cam should get you over the 400HP mark.
Ironracer
Gearhead
Go to League Reed I took a solid lifter cam out of my 340 because I didn't have the rocker Shaft or the Rockers that would support it. My dumb *** should have bought them because I could have got the bananas and the adjustables for 400 off of a Military aviation mechanic who happened to be a nitro burning Mopar Feind Specializing in 340 A bodies with his own Mechanic business
pishta
I know I'm right....
I had one in my 65 Barracuda: 68 340, 2.02's, Hooker fenderwell headers (small port even) Strip Dominator intake, 750 Holley, 284-484 cam, MP 175K convertor (2200?) 3.91 rear. Light 'em up! Same cam and a STR-12 intake with a single Demon 650 felt a little slower but still spun em through 2nd. I liked it, 700 rpm idle in gear, about 750 out. Very tire limited back then due to fender lip. I heard the .509 cam was the dog!
I had similar results. In the mid 70" I ran a 70 340 4 speed Duster with the 284/484 installed 4 degrees advanced. 4.30 gears 28" slicks, Holley 780 and Mallory dual point ignition and some Hedman headers. At Tampa drags which was said to be 66' short it ran 12.97. At Twin City Dragstrip it ran 13.07 which was suppose to be a 1/4 mile legit track.
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harrisonm
Well-Known Member
I TOTALLY agree. there is a BIG difference between just throwing in a 284 484 cam and really setting up the rest of the engine. Then there is the matter of setting up the rest of the car for launching, acceleration and traction.
Ironracer
Gearhead
My friend has the 509 in his 71 to do with the four speed in 391 it works pretty good in that damn good actually but he used to work in a machine shop he's done a lot of head work to those things and he's got like some kind of NASCAR intake on there
QuickDart360
Well-Known Member
I replaced a 280 purple shaft for a 292/508. I like it better! Just feels stronger.
1971 street/strip 340 Cuda back in 1982. full interior, all stock, 3.55's, 8x26" slicks, B&M super holeshot 3500st, ally dual plane, 750DP, 484/284, small tube hdrs, best was 13.26@101+, added 850DP+HS strip Dom intake+2" open spacer, [email protected] works out@around 320fwhp for weight/mph...3500lbs+@line with my 200lbs+. Would some ported heads really add 80+hp to my combo? to make these 400/425hp combo's a reality with a 484 cam, I wonder.
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tubbedamx
Location Boise, Idaho
I’m sure we’re splitting hairs but how does the P4529959 cam compare to the 484/284 and the 509 cam.
It’s 497/288 on a 108 centerline.
I am running that cam now in my 360 with ported heads (around 250 at 500), Hughes 2500 stall, 3.23 gears in a ‘67 notchback barracuda. My opinion is the car comes on strong at 3500 and pulls to 6500. Sounds great at a stoplight.
It’s 497/288 on a 108 centerline.
I am running that cam now in my 360 with ported heads (around 250 at 500), Hughes 2500 stall, 3.23 gears in a ‘67 notchback barracuda. My opinion is the car comes on strong at 3500 and pulls to 6500. Sounds great at a stoplight.
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It’s basically a step up from the 284/484 and a step down from the 292/509. The Mopar Performance engine book mentions that cam in an example of: changing cams after making some other drivetrain changes, and upping the cam to take advantage of those upgrades, such as a converter. One wants a little more than the current 284/484 but feels the 292/509 is too big for the combo. Bring in the 288/497.
And speaking of converters, you could really use a much higher stall than that 2500, like a 3500. Get right up to the rpm’s where the power comes on as you mention when you hammer it.
QuickDart360
Well-Known Member
I used to run the 280 mopar cam and it sounded pretty good. Now went straight to the 292 cam. And while it is rougher it does good in street driving. 3.91's and a 3400-3600 stall helps cam do its thing. Also installed it 4° advanced @ crank to help it have more low end and it seems to have helped.
j par
Well-hung Member
HOLY 10-YEAR-OLD THREAD REVIVAL!!!...
Yeah I had that camshaft in the 318 with 360 heads that I got with my Duster...
I was doing mid to low 13's with a four-speed 355 gears and a Edelbrock 600...
I tried taking it to the end of the quarter mile and third gear but it wasn't happy on the drive home... Or ever again for that matter..
I started reading the beginning of this thread and people were talking about Dino...
...
Yeah I had that camshaft in the 318 with 360 heads that I got with my Duster...
I was doing mid to low 13's with a four-speed 355 gears and a Edelbrock 600...
I tried taking it to the end of the quarter mile and third gear but it wasn't happy on the drive home... Or ever again for that matter..
I started reading the beginning of this thread and people were talking about Dino...
...
tubbedamx
Location Boise, Idaho
Great article thanks for sharing. I’m surprised they decided to spit the gap between the two cams. Seems like they have a lot of duration for such a small lift cams but idk.
That cam was really for .500” lift rule oval track engines, but from what I’ve read can work great on the street as well
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