Your donations help keep this valuable resource free and growing. Thank you.
|
258 cam specs?? |
Post Reply | Page 123> |
Author | |
5spdwagon
AMC Addicted Joined: Jun/29/2012 Location: Guy ton ga Status: Offline Points: 522 |
Post Options
Thanks(0)
Posted: Oct/14/2018 at 8:39am |
Does anyone know what the cam specs are on a 1983 258 would be. Looking for some info before I tear into this. Looking for a cam pretty close to orginal as I can get.
|
|
Real hot rods have 3 pedals
|
|
matty 401
AMC Addicted Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1727 |
Post Options
Thanks(0)
|
http://www.angelfire.com/my/fan/Jeep4.0Camshafts.htm
|
|
72 matador 401 the beast
79 concord 2 door 72 matador 304 grasshopper 68 Rogue 406 93 Cherokee 4.0 5 speed |
|
5spdwagon
AMC Addicted Joined: Jun/29/2012 Location: Guy ton ga Status: Offline Points: 522 |
Post Options
Thanks(0)
|
That’s some good info. Thanks
|
|
Real hot rods have 3 pedals
|
|
matty 401
AMC Addicted Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1727 |
Post Options
Thanks(0)
|
no problem
|
|
72 matador 401 the beast
79 concord 2 door 72 matador 304 grasshopper 68 Rogue 406 93 Cherokee 4.0 5 speed |
|
Ollie
AMC Addicted Joined: Sep/17/2012 Location: Brandon, MS Status: Offline Points: 2803 |
Post Options
Thanks(0)
|
Mike,
I too am searching for a cam on my 258 build. I have been reading all the old posts by Uncle John that i can find. I found one that he said he wished he would have used a Isky 262 Super Cam rather than a 256 on his 258. I am looking at the chart and i have no idea what it means. I want the valve train stock. Having AMC Fun, Ollie |
|
1966 American Convertible -- "The Rambler"..SOLD
1974 Postal Jeep -- "Rapid Delivery"...SOLD 1969 Rambler 220 post car--"Road Warrior" 1989 Jeep Comanche Pioneer, 4.0L, auto, 2wd |
|
5spdwagon
AMC Addicted Joined: Jun/29/2012 Location: Guy ton ga Status: Offline Points: 522 |
Post Options
Thanks(0)
|
I can’t decide what I want to do with ours yet.
|
|
Real hot rods have 3 pedals
|
|
Pdok
Supporter of TheAMCForum Joined: Apr/03/2011 Location: Alabama Status: Offline Points: 1025 |
Post Options
Thanks(0)
|
Well, I gotta say upgrading the cam is a major plus, even with leaving the rest of the car stock. I'd go with as much lift as you can stand, but under .500. I prefer the split pattern cams, but there's plenty of people loving the old school cams too. For simplicity, cams that allow you to use stock springs (lower spring pressure/rate) would be a good choice, but there's good power potential if you're willing to also upgrade springs to accommodate a larger cam.
I'd move well away from stock replacement cams, frankly, since they were so anemic. This is a big opportunity, and will define the rest of your experience with that engine. In my case, the cam upgrade was way more noticeable than the 4.0 head swap. On stock intake/exhaust, something in the .425 to .450 lift range would be plenty. You will need to consider carb/timing/ignition upgrades to achieve full potential from any cam upgrade. That's an easy one, though.
|
|
76 Grem X 258/904,4.0 head/MPFI, Comp X250H cam, Hughes springs, Clifford header, serpentine swap.
|
|
232jav3sp
AMC Addicted Joined: Jan/09/2013 Location: Texas Status: Offline Points: 2451 |
Post Options
Thanks(0)
|
I have a Comp 260h in my Javelin's 232, and while I've only gotten to drive it maybe 10 miles, it felt much more likely then the Lunati Voodoo I put in my Rambler. The Lunati I used is their smallest (208/213 @ .050) as I was concerned about the stock M35 converter. It has so much more power then stock, but, now that I have the T5 I'm wishing I had the next cam in line (213/220). The shaft rocker head doesn't help matters. I suspect that both of my cars would rev out a good deal more with a later bridged rocker or the 4.0l head.
|
|
FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4742 |
Post Options
Thanks(0)
|
I suggest keeping to the stock cam grind if you are retaining the stock computer engine control system. Who knows how the computer may react to a different cam. It's primitive enough that it may not notice but it's best to not find out the hard way. The 1 barrel carbureted 232 and 258 use a shorter duration cam (SAE 259*, or 185* @ .050). Melling's part number for this cam is the SRC-6. The 2 barrel carbureted 258 uses a longer duration cam (SAE 262*, or 190* @ .050). Melling's part number for this cam is the SRC-8. The stock cam for your engine is therefore the SRC-8. I mention this because many places tried to sell me the SRC-6 when I was rebuilding my 1984 258. That is the improper cam. Granted, there isn't much difference between the two, but the SRC-8 is technically the correct stock replacement cam and the closest match to the original cam.
|
|
1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
|
5spdwagon
AMC Addicted Joined: Jun/29/2012 Location: Guy ton ga Status: Offline Points: 522 |
Post Options
Thanks(0)
|
I don’t have a computer on mine. It’s in a 69 Rambler. Been in there for 10 years now.
|
|
Real hot rods have 3 pedals
|
|
Post Reply | Page 123> |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |