too much cam?

Posted By: dvanecek

too much cam? - 02/02/15 05:45 PM

I just bought a 87 d150 LB with a stock 318 with a 2.76 rear gear. I pulled the heads to check the bore and valves. I replaced head, intake and exhaust gaskets. New valves seals and checked the valves by doing the ATF test. I also replace timing chain and waterpump. Now that I'm driving it I'm wishing I had put a cam in it while I had it open.

Last night while watching the SB I drank too much bourbon and bid and won a Crane Energizer 272 cam and lifters. I will be dropping a 4 barrel intake and carb when I do the cam swap. I am assuming that the truck will be sluggish until 2k then open up. MY question is will it be more sluggish than the current cam? Also could I degree this cam to move the RPM range down?

Cam Style:Hydraulic flat tappet
Basic Operating RPM Range:2,000-5,000
Intake Duration at 050 inch Lift:216
Exhaust Duration at 050 inch Lift:216
Duration at 050 inch Lift:216 int./216 exh.
Advertised Intake Duration:272
Advertised Exhaust Duration:272
Advertised Duration:272 int./272 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.454 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.454 in.
Valve Lift with Factory Rocker Arm Ratio:0.454 int./0.454 exh.
Lobe Separation (degrees):110

Posted By: RapidRobert

Re: too much cam? - 02/02/15 07:15 PM

I ain't a cam guy so no relevent info but it very well may be a better deal than the OE cam. I would degree it and advance it 4 deg which will built cyl psi down lower. Anytime you alter cyl psi you need to recurve the dist for a spot on tune & with a heavy truck/cube limited eng you would want it sharply tuned. Since you ain't getting any love on this Q Here's a BTT for ya for the cam guys that know more on this. The eddy 1406 would be a good carb and you need the strip kit

Posted By: dogdays

Re: too much cam? - 02/02/15 09:15 PM

Here's what the current cam looks like:
http://www.rockauto.com/catalog/moreinfo.php?pk=211837&cc=1084126
About the tiniest cam known to mankind with 181/192 duration at 50 and .364/.399 lift, something like that.

The CS665 stock 360 dual exhaust cam is 203/203 and the lift is .410/.410. Also LSA is 110. This would be a good cam if you're looking to keep running those gears. The Enginetech version is ~$65 on Rockauto. Or the smallest of the Comp XE line or Lunati Voodoo line.

That 216/216 cam is an old Cam Dynamics chevy lobe grind, dating from the late '70s. They liked the single pattern cams. It would be a much better cam for a 360. The only reason it may work on a 318 would be the ports in the 318 style heads are pretty small so velocity is up, and a longer cam timing MAY help fill the cylinders.
But I'm predicting the engine'll be plenty doggy until around 2400 rpm. You'll be shifting down for hills. You could probably advance it 6 degrees ahead of split overlap.

R.

Posted By: dvanecek

Re: too much cam? - 02/02/15 09:40 PM

damn that stock cam is small. I appreciate the info. Keep the comments coming guys. It sounds like I need to not shop while drinking.

Posted By: dvanecek

Re: too much cam? - 02/03/15 03:04 AM

looking for some input. Another question. How bad will my vacuum drop. I have power brakes and A/C.

Posted By: D_C

Re: too much cam? - 02/03/15 05:25 AM

Not sure about the vacuum drop, but if there is one significant enough to cause problems, you could simply add a vacuum reservoir to cure the problem.

I have an old Purple Shaft Hydraulic cam, 292 advertised duration, .509 lift in the 440 in my Charger. For my power brakes to work, I added a vacuum reservoir. It's just a tin can with a check valve to hold the reserve vacuum until it is needed.

Posted By: DaveRS23

Re: too much cam? - 02/03/15 03:48 PM

You could have it reground if you think it is too big. Engle, among others have some good profiles for SB Mopars. Last time I had a regrind, I think it was $99. Cheaper than a new one.

Posted By: mod5v

Re: too much cam? - 02/05/15 07:57 PM

Yea that cam is going to kill the bottom end on that teen. If you use it advance it 4 to 6 deg and you really need some 3.50 to 3.90 gears. It will do better with the stock cam if you don't change gears.

Posted By: Supercuda

Re: too much cam? - 02/05/15 10:46 PM

Biggest cam I like to put in an otherwise stock 318 is the 340 cam. But that's in a car.

Posted By: volaredon

Re: too much cam? - 02/06/15 02:04 AM

are Rhoads lifters still around? might help you out...
I put a stock 360-2bbl cam in a teen with Magnum heads on my last 3/4 ton... this plus a 4bbl intake, an Eddy carb and a set of headers really woke that motor up!

Posted By: dogdays

Re: too much cam? - 02/06/15 05:38 PM

Yes, Rhoads is still in business.

R.

Posted By: dvanecek

Re: too much cam? - 02/07/15 04:41 AM

I'm confused the cam is new and came with lifters. What can rhodes do for me? I'm thinking this cam and lifters is gonna go up for sale once it shows up.

Posted By: Baxter61

Re: too much cam? - 02/07/15 04:44 AM

Quote:

I'm confused the cam is new and came with lifters. I'm thinking this cam and lifters is gonna go up for sale once it shows up.

Why? Run it and see how it does, if you don't like it change it

Posted By: dvanecek

Re: too much cam? - 02/07/15 05:14 AM

Quote:

Quote:

I'm confused the cam is new and came with lifters. I'm thinking this cam and lifters is gonna go up for sale once it shows up.

Why? Run it and see how it does, if you don't like it change it

I just don't have the time to do it twice. I have a '47 dodge coupe that I need to get on the road. This truck is more of a daily driver than a project. After the coupe is done I will play this truck more.

Posted By: Dean_Kuzluzski

Re: too much cam? - 02/07/15 11:49 AM

If you add more spark advance, as mentioned, and go a step looser on torque converter, it will be ok.

Worst case, a dog from the traffic light but very fun mid-range and on up. Much more fun than the cam you have now.

I'd run it with the a smallest 4 barrel available (600 cfm being the largest), new spark curve, headers, good dual exhaust and same converter to try it out. Change converter later.

Don't over think this, just do it.

Posted By: RapidRobert

Re: too much cam? - 02/07/15 04:28 PM

Quote:

Yes, Rhoads is still in business.

there's a NIB set in "race parts" for $85 to your door. I hear they work but sound like solids. Crane (iirc) makes a set that (reportedly) bleed off less duration but are less noisy also.

Posted By: dvanecek

Re: too much cam? - 02/12/15 04:35 PM

Quote:

Here's what the current cam looks like:
http://www.rockauto.com/catalog/moreinfo.php?pk=211837&cc=1084126
About the tiniest cam known to mankind with 181/192 duration at 50 and .364/.399 lift, something like that.

The CS665 stock 360 dual exhaust cam is 203/203 and the lift is .410/.410. Also LSA is 110. This would be a good cam if you're looking to keep running those gears. The Enginetech version is ~$65 on Rockauto. Or the smallest of the Comp XE line or Lunati Voodoo line.

That 216/216 cam is an old Cam Dynamics chevy lobe grind, dating from the late '70s. They liked the single pattern cams. It would be a much better cam for a 360. The only reason it may work on a 318 would be the ports in the 318 style heads are pretty small so velocity is up, and a longer cam timing MAY help fill the cylinders.
But I'm predicting the engine'll be plenty doggy until around 2400 rpm. You'll be shifting down for hills. You could probably advance it 6 degrees ahead of split overlap.

R.

Ok guys I'm back. I sold that Cam and broke even(thanks moparts)

I picked up a old weiand stealth dual plane #7507 this one has the square bore

Intake was as expected although it looks like is has the smaller 318 size ports. I have been googling for the last 1/2 and for somes can find the dimension although I have seen them somewhere.

The carb is a plastic 850 cfm thermoquad. So I would need to rebuild it and buy an adapter. I like the idea of the spreadbore but I'm sure that this carb is gonna responsive or boggy. I've never run one before.

Lastly I'm cam shopping.I found this one on rock auto as well what are your thoughts on this one?

ENGINETECH Part # ES1089R
Stage 1 high performance. May not be computer compatible. Use flat followers. .050" Duration-204/214; Cam Lift-.281/.296; Lobe Center-108/116.

the lift would end up being 4.21/444 with the 1.5 rocker arms

Thank you all for your input

Posted By: dogdays

Re: too much cam? - 02/14/15 12:55 AM

That's the cam everyone sells for every engine. Edelbrock sells it as the Performer cam.

If you can swing it, I'd steer you to the Lunati Voodoo line, the smallest one.

Back when Comp had a Magnum cam for the 318, it was 204/204, 0.425 lift, LSA 110. That one or one like it should work better.

R.

Posted By: dvanecek

Re: too much cam? - 02/14/15 11:12 PM

Quote:

That's the cam everyone sells for every engine. Edelbrock sells it as the Performer cam.

If you can swing it, I'd steer you to the Lunati Voodoo line, the smallest one.

Back when Comp had a Magnum cam for the 318, it was 204/204, 0.425 lift, LSA 110. That one or one like it should work better.

R.

I think I'm gonna save up for that Lunati. Looks it's gonna give good torque and a smooth powerband. What do you think about the TQ?