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what do you think i would be at compression wise?

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any aftermarket cam will have the pushrod oiling lifters except maybe mopar performance ones. everyone else (comp, crane, summit, lunati) lists the same lifters for AMC and chrysler.

w/o decking or new pistons, with the mag heads and stock LA shortblock, if you use the think Mr. gasket/MP head gaskets (.028" thick) and your mag heads are stock 63ccish chambers, you'll be at about 8.6-8.7:1 compression.

decking will most likely be more expensive than the cost of the pistons, but then, you probably would want to actually get the block bored if you're buying new slugs.

I'd be leery of even that much lift on stock mag valve springs. remember, on the magnum engine that will be .470/.470 lift. I'd use the GM 3100 springs/retainers with that cam.

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that cam w/1.6 rockers will end up having specs in .050 duration and lift similar to a comp XE262.

dulcich made 335hp/400tq with a stock long block 360 from the early 80's, hooker headers, and a comp XE262.

see article:
http://compcams.com/Community/Articles/Details.asp?ID=-409383413

with the mag heads giving slightly better flow, more velocity, and 3/4 of a point higher compression, I'd probably put the motor in the 350-355HP/410-420tq range as long as the bottom end is in good shape with good ring seal.

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comp XE262 is 262/270 adv, 218/224 .050, .462/.470 lift, 110 LSA, 46 degrees overlap.

the summit K6901 (with magnum 1.6 ratio rockers) is 276/286 adv, 218/228 .050 duration, .470/.470 lift, 114 LSA, 53 degrees overlap

since .050 duration is near identical, these cams should have similar RPM ranges. the 114 LSA of the summit cam might sacrafice a little low end/midrange torque and carry the powerband slightly higher. the additional 7 degrees of overlap should make the idle lumpier. similar .050 duration and lift numbers mean they should make similar power, if head flow is similar.

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so in ther words the cam is fine then?

thanks patrick in advance for your help.

and you too hotroddave!

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that cam w/1.6 rockers will end up having specs in .050 duration and lift similar to a comp XE262.

dulcich made 335hp/400tq with a stock long block 360 from the early 80's, hooker headers, and a comp XE262.

see article:
http://compcams.com/Community/Articles/Details.asp?ID=-409383413

with the mag heads giving slightly better flow, more velocity, and 3/4 of a point higher compression, I'd probably put the motor in the 350-355HP/410-420tq range as long as the bottom end is in good shape with good ring seal.

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oh yeah idk if you noticed but you know they made 335 horse with a block bored 40 over.

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the overbore will add 7 cubic inches. it won't really affect power at all, maybe 1-2% at most over a similarly built standard bore engine

condition of the bores (are they round? tapered?), and ring seal quality will have a larger effect on power than .040" more bore will

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