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I believe the question I was answering was, “What part of the magnum was superior stock???” “The efi system is not that great.” Somewhat true but, you get a block that has good cylinders “The camshaft is weak weeny” True, but did most LA come stock with much better, and provisions in the M block...

EFI Roller cam More uniform block casting Cyl head flow More efficient chamber Any others? Other than valvetrain, I don’t think any big differences in oiling Edit; short block specification came in as I was writing

I used a Kevco M306 M305 - 340M306 - 360Stock Appearing

A camshaft with an eccentric to drive the fuel pump. Might be easier to run an electric pump.

Hope I'm not hijacking MRGTX's thread, but this may be info he can use as well. PWR & Mancini rockers are not far off in difference of price. I have LA type head oiling, based on that, what are thoughts on: PRW are Stainless with cup adjusters, needing ball pushrods. I assume requiring...

Late to the party here. Going back a few posts, Trick Flow specifies Harland Sharp rockers on a magnum block because they are a LA shaft arrangement. You need to get oil into the shaft/rocker interface. Magnum/AMC oil through pushrod arrangement only gets pressurized oil to the top of the push...

For a drag car a 451 wouldn't be the better choice?

A-Body Mopar A-Body Mopar

Brian (IMM) commented on a FB thread related to this .... “Enginequest is phasing out heads as well, we now have an import aluminum head that makes similar power at a similar cost.”

Crate Engine (pron. KrAte)... an engine that shows up in a box on your doorstep after placing an order Create Engine (pron. KrE Ate)... an engine you build after giving careful thought & planning to cam, rod, crank, and top end. To add to the confusion too, I hear there are two types of folks...

Thank you for this thread, glad you’re moving

My guess is 11/32 is for a LA block/head combo oil mod? Since that is a timed arrangement, (hole in cam lines up w/ hole in block) you are adding some volume. With a constant feed, I’m thinking you will have a retention pond going on up on top with an 11/32 “restriction”. I’m thinking we are...

Watching

I'm not sure what I need to do... "One thing that hasn't been mentioned yet is the flex plate issue. If you have an automatic, you'll need to swap to a Magnum style flex plate" OK, but what if I plan on connecting to an A-833 that was connected to a 1969 340?

My thoughts were either: rebuild 340 w/EQ heads, Air Gap, retro roller cam, & big question -more stroke. OR, What you said-5.9 Mag short block, EQ LA heads, LA front cover, Air Gap/FITech. & again the big question -more stroke. Know of any torque/Hp curve comparisons between modern throttle body...

Which way I go as far as engine will depend a lot upon the teardown and inspection of my current 340. I already have the carb version AirGap for that engine. Just thinking that between running a carb for years, and not knowing if there are hardened seats in the X heads that I stand a good chance...

Staying flat hood here, though I might add the later style dual scoops.

I have a 68, and want to avoid the look of fuel rails etc. does anyone see a problem running a 5.9 with EQ heads and a throttlebody fuel injection on a Air Gap manifold? Or am I just being stupid?