I had a 88 318 and ran a .454 lift cam and didnt change the springs and never had any problems.every one said I would need to change them but never did.ran just fine.the heads were stock and the motor came out of a w150

 

The difference is the magnum engines have hydraulic roller lifters, which means you have to use a billet cam specifically designed for hydraulic roller lifters.

 

can I take a roller cam and lifters from a 5.8 magnum and put it in my 5.2 la?

 

That's something I'm not sure about, I don't know enough about the LA engines. I do know that the two engines used a different oiling system, so I would assume no, but someone else may have a better answer.

 

I know for chevys they have retro fit roller set ups,not sure if they have that for mopar

 

Google is your friend when it comes to finding out something like that. Let us know if you find an answer!

 

i believe the LA engines have roller lifters

 

http://www.allpar.com/mopar/318.html
318 throttle-body / roller-cam engines (by Vince Spinelli and Jack Perkins)

The throttle-body fuel-injected 318 motor had a few changes for its model year (1988), which would come to the 360 in 1989.
First, Chrysler finally switched from standard hydraulic lifters (and matching camshaft) over to a roller hydraulic lifter and a new matching camshaft. The roller design allowed for a steeper cam profile, and thus a more precise valve-train actuation.
Second, the 2 barrel TPI fuel injection intake replaced the carburetor. [Webmaster note: the company was still intent on cost savings, and six more fuel injectors per engine does add up; still, others had been using multiple-port injection for some time — it had been standard in the Volkswagen Rabbit since 1979.]
Third… the heads were different; the basic casting is the same, but the fine points were not. To make better use of the fuel injection, swirl intake ports were introduced. To accommodate a slightly changed pushrod angle (the new roller lifters were taller than the standard hydraulics), the push rod guide holes in the cylinder heads were changed from roughly 0.5 inches to a published 0.66 inches (Dodge DW Series Truck Factory Service Manual, 1988). Upon measurement, this was confirmed to within an accuracy of 0.01 inches. Push rod length changed from about 7.5” down to 6.78”, and diameter shrunk from 0.360” to 0.3125” (again to accommodate the changed push rod angle).

 

I know the roller lifters for 92+ magnum motors have the same specs as the flat tappet lifters in 91 and older la engines.just not sure is the magnum roller cam is a direct bolt in.
I know I can get a set of magnum roller lifters with oem link bars and put them right in my 91 la.does anyone know if the roller cam will bolt right in?

 

i am rebuilding my 318 this summer and plan on using oem roller lifters and a comp roller lifter cam...

http://store.summitracing.com/partde...9&autoview=sku



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