Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
cam choice for 440 with 1960's long ram manifolds? #2893582
02/27/21 01:49 AM
02/27/21 01:49 AM
Joined: Feb 2006
Posts: 1,179
Canada
D
demon Offline OP
super stock
demon  Offline OP
super stock
D

Joined: Feb 2006
Posts: 1,179
Canada
Anyone have experience with long ram manifolds? Specifically a good cam for a 440, or a good combo for strong street performance.
Here's what I am thinking so far. 440, with 10-1 compression, 440 Source aluminum heads, long ram intake tubes with two 500 cfm Edelbrock AVS2 carbs, block hugger headers, 4 speed, 3.55's in a 3900 lb car. These intakes are great for low-mid range torque, which is exactly what I want. I am leaning toward a hydraulic roller cam, and have heard great things about the Comp Cams XR274HR-10. It is a mild roller, and apparently makes huge torque at the low-mid range like I want. I am not building a drag racer, and have no intentions of high rpm use really. I want huge pulling power, passing power, and easy cruising down the highway at 60 mph. I am not a high speed driver, but love strong acceleration.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2893612
02/27/21 08:56 AM
02/27/21 08:56 AM
Joined: Jan 2003
Posts: 1,020
Andrews,In. U.S.of A.
6
67_Satellite Offline
super stock
67_Satellite  Offline
super stock
6

Joined: Jan 2003
Posts: 1,020
Andrews,In. U.S.of A.
Are you using the really long ones which puts the carb. out over the valve covers? If so, I believe the original engines they were on had a torque peak of 2800 r.p.m. I suppose if you cammed for a peak torque very near that speed you would have pretty good results. Sounds like a candidate for a custom grind,and it's going to be a fairly tame cam. Lots of good folks here can no doubt spec. one for you.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: 67_Satellite] #2893628
02/27/21 10:19 AM
02/27/21 10:19 AM
Joined: Feb 2006
Posts: 1,179
Canada
D
demon Offline OP
super stock
demon  Offline OP
super stock
D

Joined: Feb 2006
Posts: 1,179
Canada
Originally Posted by 67_Satellite
Are you using the really long ones which puts the carb. out over the valve covers? If so, I believe the original engines they were on had a torque peak of 2800 r.p.m. I suppose if you cammed for a peak torque very near that speed you would have pretty good results. Sounds like a candidate for a custom grind,and it's going to be a fairly tame cam. Lots of good folks here can no doubt spec. one for you.

Yes, the 30 inch long ram tubes.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2893632
02/27/21 10:43 AM
02/27/21 10:43 AM
Joined: May 2003
Posts: 6,545
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,545
Downtown Roebuck Ont
Originally Posted by demon
Originally Posted by 67_Satellite
Are you using the really long ones which puts the carb. out over the valve covers? If so, I believe the original engines they were on had a torque peak of 2800 r.p.m. I suppose if you cammed for a peak torque very near that speed you would have pretty good results. Sounds like a candidate for a custom grind,and it's going to be a fairly tame cam. Lots of good folks here can no doubt spec. one for you.

Yes, the 30 inch long ram tubes.


There are 2 versions of that setup. Long and short ram. Both 30" but the runner divider on the long ram runs the full length of the runner and the short one doesn't.

The short one doesn't run out of breath as quick as the long one does but is extremely rare compared to the long ones.

This would also factor into your cam selection.

Kevin

Re: cam choice for 440 with 1960's long ram manifolds? [Re: Twostick] #2893672
02/27/21 12:05 PM
02/27/21 12:05 PM
Joined: Feb 2006
Posts: 1,179
Canada
D
demon Offline OP
super stock
demon  Offline OP
super stock
D

Joined: Feb 2006
Posts: 1,179
Canada
Originally Posted by Twostick
Originally Posted by demon
Originally Posted by 67_Satellite
Are you using the really long ones which puts the carb. out over the valve covers? If so, I believe the original engines they were on had a torque peak of 2800 r.p.m. I suppose if you cammed for a peak torque very near that speed you would have pretty good results. Sounds like a candidate for a custom grind,and it's going to be a fairly tame cam. Lots of good folks here can no doubt spec. one for you.

Yes, the 30 inch long ram tubes.


There are 2 versions of that setup. Long and short ram. Both 30" but the runner divider on the long ram runs the full length of the runner and the short one doesn't.

The short one doesn't run out of breath as quick as the long one does but is extremely rare compared to the long ones.

This would also factor into your cam selection.

Kevin

As I stated, I have the 30" long runners. Not the "short" versions of the long rams. I am using the more common 30" full divided ram tubes, which are designed for lower rpm.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2893887
02/27/21 09:03 PM
02/27/21 09:03 PM
Joined: Jan 2003
Posts: 1,020
Andrews,In. U.S.of A.
6
67_Satellite Offline
super stock
67_Satellite  Offline
super stock
6

Joined: Jan 2003
Posts: 1,020
Andrews,In. U.S.of A.
Contact Fast 68 Plymouth. He will not lead you astray.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2893937
02/28/21 12:32 AM
02/28/21 12:32 AM
Joined: Jan 2003
Posts: 1,979
s. e. pa.
C
calrobb2000 Offline
top fuel
calrobb2000  Offline
top fuel
C

Joined: Jan 2003
Posts: 1,979
s. e. pa.
hi

i would use the mopar 284 / 528" lift solid close to the original

Re: cam choice for 440 with 1960's long ram manifolds? [Re: calrobb2000] #2893943
02/28/21 01:22 AM
02/28/21 01:22 AM
Joined: Jun 2013
Posts: 869
Keizer, Oregon U.S.A.
E
elmor353 Offline
super stock
elmor353  Offline
super stock
E

Joined: Jun 2013
Posts: 869
Keizer, Oregon U.S.A.
That cam sounds like way more than what he's looking for. He wants something that will give him lots of torque from idle to about 3000-3500 rpm max. Something around 210-214 duration @ .050, with .435-.440 lift. That would be good from about 1000 to 4000 rpm. Melling MTD-2 fits that bill and they're cheap on RockAuto.

Last edited by elmor353; 02/28/21 01:31 AM.
Re: cam choice for 440 with 1960's long ram manifolds? [Re: calrobb2000] #2893954
02/28/21 02:23 AM
02/28/21 02:23 AM
Joined: Jan 2003
Posts: 17,507
Las Vegas, NV
6bblgt Offline
I Live Here
6bblgt  Offline
I Live Here

Joined: Jan 2003
Posts: 17,507
Las Vegas, NV
Originally Posted by calrobb2000
hi

i would use the mopar 284 / 528" lift solid close to the original




close to the original WHAT?

hot rod.jpg
Re: cam choice for 440 with 1960's long ram manifolds? [Re: calrobb2000] #2893972
02/28/21 08:56 AM
02/28/21 08:56 AM
Joined: Mar 2011
Posts: 3,056
Michigan
A
A727Tflite Offline
master
A727Tflite  Offline
master
A

Joined: Mar 2011
Posts: 3,056
Michigan
Originally Posted by calrobb2000
hi

i would use the mopar 284 / 528" lift solid close to the original




I’m thinking your thinking this is a maxwedge. They had 320/320 x .520 camshafts.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: A727Tflite] #2893973
02/28/21 09:10 AM
02/28/21 09:10 AM
Joined: Jun 2008
Posts: 3,913
usa
L
lewtot184 Offline
master
lewtot184  Offline
master
L

Joined: Jun 2008
Posts: 3,913
usa
pretty sure those old long ram engines had a mild solid lifter cam, you might want to see if you can find some 300f cam specs. a stock magnum cam would probably work good with those 30" tubes. those 30" tubes may be out of steam by 4500rpm. don't over cam or you'll defeat the purpose of the long ram.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: lewtot184] #2893975
02/28/21 09:17 AM
02/28/21 09:17 AM
Joined: May 2019
Posts: 6,175
nowhere
S
Sniper Offline
master
Sniper  Offline
master
S

Joined: May 2019
Posts: 6,175
nowhere
I would not use a solid lifter cam with those long horn cross rams, imagine the PITA trying to set valve lash.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: lewtot184] #2894025
02/28/21 11:53 AM
02/28/21 11:53 AM
Joined: Feb 2006
Posts: 1,179
Canada
D
demon Offline OP
super stock
demon  Offline OP
super stock
D

Joined: Feb 2006
Posts: 1,179
Canada
Thanks for the input everyone. I do not want a solid cam. I want a hydraulic cam, and quite possibly a hydraulic roller. I would go with a stock 300 F spec cam, but I am looking at upgrading a bit. Since I will be running 440 cid instead of 413 cid, and probably 440 Source aluminum heads and headers, and a manual transmission, I think a cam upgrade is also in order. I do not want a crazy cam. I am after extreme torque from low to mid rpm. It is a large street car that will never see a quarter mile track, and I have no desire to go 140 mph. I just want major street power and mellow, economical cruising at 60 mph

Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2894045
02/28/21 01:06 PM
02/28/21 01:06 PM
Joined: Jan 2003
Posts: 20,645
So Near, Yet So Far
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

Joined: Jan 2003
Posts: 20,645
So Near, Yet So Far
Bear in mind that those manifolds were developed in an era of pretty small cams.
I'd be inclined to use a shorter duration, like 214-224 @ .050, but some added lift,- say .470-.480.
CL for that combo would seem to be a more significant spec.than the usual dual-plane intake, say 112-114.
Not sure where the 3.55 gear puts you for RPM with whatever tire size you're planning.
Car weight is of course also a factor, though not so much highway as around town.
I'd suggest asking in the race/engine section.

Re: cam choice for 440 with 1960's long ram manifolds? [Re: topside] #2895076
03/03/21 01:37 AM
03/03/21 01:37 AM
Joined: Jan 2008
Posts: 34
Livonia,MI
1
1968fury Offline
member
1968fury  Offline
member
1

Joined: Jan 2008
Posts: 34
Livonia,MI
https://www.bigblockmopar.nl/2008/12/496ci-stroker-with-longram-intakes/

Maybe get in touch with this guy it seems he's ran a few different cams with a long ram setup


71 scamp 340 509 cam 456 gear,68 fury1 318 3spd on the tree,50 merc flathead 3x2 3spd w/overdrive
Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2895207
03/03/21 01:40 PM
03/03/21 01:40 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
Which year or type of the three different version manifold do you have?
Divided all the way. 1/3 divided or 1/2 the runner divided.
I believe Chrysler used those from 1959 having the long non divided and maybe part of 1960 or maybe even in 1961 and then Chrysler engineers shortened the divider to 1/3 and finally to 1/2 divided.
None of them were known for high RPM power, above 4500 RPM shruggy
I've never owned or help tune one of those cars but I did rebuild a 1963 long ram motor for customer a long time ago and I can't remember now which intake it had on it shruggy That motor came out of a junkyard in Utah and I'm not even sure which year is was realcrazy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: cam choice for 440 with 1960's long ram manifolds? [Re: demon] #2895237
03/03/21 02:47 PM
03/03/21 02:47 PM
Joined: Dec 2003
Posts: 22,695
Bitopia
J
jcc Offline
If you can't dazzle em with diamonds..
jcc  Offline
If you can't dazzle em with diamonds..
J

Joined: Dec 2003
Posts: 22,695
Bitopia
Your 3.55's IMO are pointless unless you have some serious rear tires. I like the HYD roller thinking.

In HS in the late 60's I had 413 with LR in my 62 Polara with a mild crane Hyd cam. I added a, at the time, the trick "Varicam" cam sprocket, thinking it would optimize the LR's for my street application. I was a kid, have no real idea how well it really worked, but it needed a specially curved Dist to work properly. It sure was all done over 5,000rpm.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: cam choice for 440 with 1960's long ram manifolds? [Re: jcc] #2895286
03/03/21 04:34 PM
03/03/21 04:34 PM
Joined: May 2019
Posts: 6,175
nowhere
S
Sniper Offline
master
Sniper  Offline
master
S

Joined: May 2019
Posts: 6,175
nowhere
Who spins it over 5000 rpm on the street??

Re: cam choice for 440 with 1960's long ram manifolds? [Re: Sniper] #2895366
03/03/21 07:47 PM
03/03/21 07:47 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 Sniper
Who spins it over 5000 rpm on the street??

Me, every chance I get devil
But not one of those long ram motors work shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: cam choice for 440 with 1960's long ram manifolds? [Re: Sniper] #2895550
03/04/21 11:07 AM
03/04/21 11:07 AM
Joined: Aug 2011
Posts: 2,843
Pattison Texas
CSK Offline
master
CSK  Offline
master

Joined: Aug 2011
Posts: 2,843
Pattison Texas
you need a cam in the 220ish@.050 & a wide LSA, 112 to 114 , the wide LSA keeps the exhaust pulse from affecting the ram pulse that the LONG runner creates , I would lean more to the 114 LSA, I would also cut a 30dg back cut on the intake valves ONLY, not the exhaust valves , I would also install the intake lobe @ 106 to 108

Last edited by csk; 03/04/21 12:24 PM.

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Page 1 of 2 1 2






Powered by UBB.threads™ PHP Forum Software 7.7.1