I have a 1985 318 roller block, cam and lifters from a 1998 318 magnum, pushrods from a 1990 Dodge 318 roller cam 318 with TBI, Hughes cam snout extension to use a mechanical fuel pump, 360 heads, and a standard link-type timing set, is this all I need to convert to a hydraulic roller cam in my 318?

Those 360 heads have a larger size chamber resulting in lower compression, some higher compression pistons will help a lot.

Yeah, I know that's going to be an issue but not a mechanical/technical one, I just want to make sure I have the mechanical/parts issues down, I can address the low compression in the future when I upgrade the cam by using a short duration, high lift cam with a tighter lobe center, I just want to make sure that I didn't leave anything out in the basic mechanical side of the equation, I'm on a very tight budget right now and will upgrade the cam for sure withing the next 6 months or so, but I want to get the basics of this project down so I'm on a mechanical even keel so to speak. Swapping in a new hydaulic roller cam down the line will not be a big issue.

you will need the 8 dogbones and tin retainer with 3 bolts.

either from the mag engine or the 90 core engine.

I recomend pulling each lifter apart and clean them while you have them out. I have found most used roller lifters are dirty with grit/carbon build up. on some engines I have fix the ticking by a lifter service. they were pluged up solid.

I do mine on the bench remove clip/cup/piston wash with brake clean,oil, put them back together. I dip the roller end in oil when droping them in the block. they pump up after fire up, rattle till all air is removed then no noise.

I was also going to mention, not sure of the yr engine/heads you have.

check the pushrod hole,they should be the larger hole on the later modle 360 heads.

if it is the small PR hole,you can run them but need to make sure the PR has clearce thru its travel in the PT hole. some slight cleance grinding maybe needed. not much but some is needed.

if you check the block for yr post up what yr 318 4-v it is.

IIRC, the vin said a 2-v 318

It's a 85 block, which everyone says should be a roller cam block, with 360 heads, vin says 318 2v, but per the original owner, was a 318 4bbl Q-jet truck. Were all '85 318 blocks set up for roller cams even if they didn't have them?

I will say yes,every 85 318 I have torn down was roller block.

heres some info when looking at swaping stock parts around

car 318 got roller cam,carb got long nose roller cam/mech FP-TBI got short nose cam,no mech FP

trucks got flat tappet,all 318 4-v got 360 heads/roller block/flat tappet cam.

early roller lifters do not oil thu PRs, used a short solid PR.

later model roller lifters have oil thru cup and hollow PRs.

on the later model pre-magnum engines such as a 1990 tbi 318,it will oil up thru the head to rocker shafts LA style, AND will be oiling thru lifters/hollow PRs to the rockers..both ways.

It does not seem to be too much oil in the head/VC. mine went from LA oiling to oiling both ways with no ill effects.

only thing I can think of is Ma Mopar was gearing up for the 92 magnum engine with oil thru lifters.

some early magnum blocks will be drilled to oil LA style but the magnum head/gasket block the oil hole.

the long and short nose pre-mag roller cam will be drilled for LA shaft oiling.

magnum engine roller cam will not be drilled for oiling

just match up the correct parts to get what you need from a magnum or pre-magnum

Allright I think I'm getting this sorted out, you are saying my 1998 magnum cam will not work in my 85 roller block with 360 heads because the cam is not drilled for the standard LA oiling? I need a cam from or designed for the pre magnum roller engines? If that's the case, I will just swap the complete magnum in, but my current exhaust manifolds were designed for an air injection system I believe, so they will not work, correct? Thanks for the help, info on this swap is difficult to find and contradictory at times.

Short nose not an issue as I have the Hughes extension piece, what's it out of? 318 or 360?. Send me a PM, I might be interested in it. Thanks!!