318 Magnum heads swap to LA block - Mopar Forums
 


Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-14-2017, 02:01 PM   #1
Mak
New Member
Thread Starter
 
Join Date: Jul 2017
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
318 Magnum heads swap to LA block

Hello all, I'd like to start this out by saying that I apologize in advance because there is probably a thread for this somewhere but I was unable to locate it as I am brand new to this site and I'm not quite familiar with it yet.

Here's my conundrum: I am starting out with a 1990 318 small block. I would like to put Magnum heads on it from a 1995 318 small block. In order to do this, I believe will need "custom" pushrods "with oiling provisions" that are 7.650" long. (Comp Cams 7960) From what I have read, it seems to me that the Comp Cams 280H camshaft would best fit my application. This cam kit (Comp Cams "K-kit" k20-233-4) comes with a cam (obviously), a spring set, retainers, and new lifters "with oiling provisions".

So now that the motor has lifters and pushrods "with oiling provisions" how does that work? What do I have to do in order to push the oil through the the lifters and pushrods in order to get oil to the top end? Or am I miss something here? Can someone please explain?
Mak is offline   Reply With Quote
Old 07-14-2017, 02:51 PM   #2
Mopar Lover
 
Coronet 500's Avatar
 
Join Date: May 2011
Location: Ontario Canada
Posts: 2,040
Thanks: 0
Thanked 227 Times in 218 Posts
Welcome.

Look in the lifter valley to see if there are cast in bosses for an OEM roller cam lifter spider, if so you have the option of roller cam.

"oil provisions" means a hole in the lifter pushrod cup to allow oil into the pushrod and up to rockers.

If you go with the .501" lift cam you will need to cut down the valve guides, this can easily be done at home with the Comp Cam cutter like a #4726, this will allow you to run positive valve seals. Check their catalog for correct tool for your head and valve diameter mandrel.

Buy the tools and degree your camshaft when installed, too many have not, had problems and had to take it apart to redo.

That camshaft would not be my first choice.
Coronet 500 is offline   Reply With Quote
Old 07-14-2017, 03:03 PM   #3
Mak
New Member
Thread Starter
 
Join Date: Jul 2017
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Coronet 500 View Post
Welcome.

Look in the lifter valley to see if there are cast in bosses for an OEM roller cam lifter spider, if so you have the option of roller cam.

"oil provisions" means a hole in the lifter pushrod cup to allow oil into the pushrod and up to rockers.

If you go with the .501" lift cam you will need to cut down the valve guides, this can easily be done at home with the Comp Cam cutter like a #4726, this will allow you to run positive valve seals. Check their catalog for correct tool for your head and valve diameter mandrel.

Buy the tools and degree your camshaft when installed, too many have not, had problems and had to take it apart to redo.

That camshaft would not be my first choice.

I'll have to check out the valley tomorrow. What cam would you suggest in order to avoid having to cut the valve guides? I'm getting most of my info from pages that claim I can use Magnum heads and that cam without cutting or machining and everything is all "bolt together".

Last edited by Mak; 07-14-2017 at 03:08 PM.
Mak is offline   Reply With Quote
Old 07-14-2017, 03:41 PM   #4
Mopar Lover
 
Gorts 5th's Avatar
 
Join Date: May 2012
Location: Debary Florida
Posts: 1,371
Thanked 103 Times in 103 Posts
Smile

Im runing a comp. Dual energy cam/ kit 275 deh.
Gorts 5th is offline   Reply With Quote
Old 07-14-2017, 04:39 PM   #5
Mak
New Member
Thread Starter
 
Join Date: Jul 2017
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Gorts 5th View Post
Im runing a comp. Dual energy cam/ kit 275 deh.
With magnum heads?
Mak is offline   Reply With Quote
Old 07-15-2017, 04:44 AM   #6
Mopar Lover
 
Coronet 500's Avatar
 
Join Date: May 2011
Location: Ontario Canada
Posts: 2,040
Thanks: 0
Thanked 227 Times in 218 Posts
For any cam recommendation need to know car weight and usage, transmission type, converter stall, rear axle ratio and rear tire size.

Using 2-3 cam manufacturers recommendation forms is best.
Coronet 500 is offline   Reply With Quote
Old 07-15-2017, 04:58 AM   #7
Mopar Lover
 
Iowan's Avatar
 
Join Date: Mar 2015
Location: Lost In Time!
Posts: 1,868
Thanked 103 Times in 103 Posts
Quote:
Originally Posted by Coronet 500 View Post
For any cam recommendation need to know car weight and usage, transmission type, converter stall, rear axle ratio and rear tire size.

Using 2-3 cam manufacturers recommendation forms is best.
I agree here, they will get you within a cam or two of what you need.

On a mild build like yours if you're not going to cut the valve guides I wouldn't be surprised if they have a similar cam.
Iowan is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
318 LA to 5.2 Magnum swap questions! Kadassa Engines, Exhaust and Fuel systems 4 07-02-2014 06:26 AM
318 Poly to Magnum Swap myfury3 Engines, Exhaust and Fuel systems 2 05-12-2014 09:39 AM
360 magnum to 318 magnum swap in a 95 ram johnboy 94-Current Dodge Trucks 4 02-01-2012 11:20 AM
Big block to small block swap? Brent1960 General Discussion 2 05-17-2009 04:25 PM
Is a 85 Dodge 318 short block w/heads compatible with a 94 Jeep 318 motor? LittleSpark Current Jeep Models 10 01-15-2009 09:06 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -7. The time now is 01:01 AM.