What is the horse power benefits

Icetech said
but if all you are going to use is the block and timing cover and replace the rest of it, is the magnum a better block?

Only because it’s newer.

Icetech said
i want to build one in the next year or so and would rather start out decent.. i want to keep la oiling since i have the top end already is the main thing..

Ether drill the passage or like in the case of most serious heads, use pushrod oiling. Rockers for this set up can be purchased for standard Edelbrock heads.

Slantsix64 said
Well they all have roller camshafts,

Easily done for a LA and any serious roller will need work done to the blocks oiling passages anyway.

Slantsix64 said
true 9:1 compression,

OK @ best for the street.

Slantsix64 said
better rings,

Doesn’t apply

Slantsix64 said
better heads,

Marginally better and good for use of not cracked (or you don’t care about it, I didn’t!) and on a stroker, mostly ridiculous.

Slantsix64 said
don’t leak water out of the exhaust manifold bolt jackets,

I like that!

Slantsix64 said
seal better on intakes,

Doesn’t apply

Slantsix64 said
valve covers.

I like the 10 bolts though I have never had an issue with the LA’s 5.

Slantsix64 said
The 5.2 camshaft is a better decent RV grind as well

Arguable

Icetech said
k.. i only plan on using a block, just wanted to make sure there wasn't something bout that.. i have LA roller right now but only 318.. keeping a eye out for a 360 roller, there is a 1990 near me for $300 but has magnum heads so not sure if it would have the la oil holes drilled.. guy could also be wrong on the year.. not sure what year the magnum came out

Should be an easy check out. Bring a breaker bar, small extension and the right socket and whip off a head!