X, J, or 308?

kujo said

Thanks for all the replies. I should have gotten the 587's. I could still probably pick them up if that's what I decide to do. What about the magnums. How do the stock magnums compare to the LA heads. When considerring the same machine work (minor blending) to each type head.

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I have Magnum heads on my 360 truck motor and they make GOBS of power!
I purchased them from a Mopar performance dealer in metro Atl and he said in their stock as delivered form, they Out Flowed ALL other SB heads.
I have no Dyno figures to know the approximate power they are making, but I can tell you my 74 3/4 ton camper special LWB hauls ***! Dana 60 w 4.10 and suregrip.

All I had to do to put them on my LA block was buy the intake manifold (from Chrysler) with provision for carb, use AMC (jeep) lifters and custom pushrods made (not too expensive either!).

I got the heads for $200 each! Brand new! Years ago!
They are still going strong, no signs of Cracks anywhere.

If you can find a good set (heads, magnum) you won't be disapointed!

Mike