340 stroker

My son has a set of the Indy heads that I will get from him and have them ported Thanks for advice

Rob, the W2s on my old 340 that went 12.0 were unported. Not my choice, that's how they came when I bought the car.

W series heads (iron and aluminum) were designed to be ported, no? Mopar figured racers would have their individual programs for preparing heads, no way they'd be able to cover everyone's needs with one casting. W2s did in fact get pretty confusing with all the variations over the years. The late ones required T&D rockers ($$$) IIRC.

Regardless, why bother with offset rockers and raised port intakes if you're just going to run them OOTB? Without porting you're not taking advantage of their potential. Will they work? Of course, it's just a cylinder head but they're fairly pedestrian until you hog 'em out.

Just saying, if you are starting from scratch, it's probably more cost-effective to get standard LA heads. W2s are great but can get cost prohibitive.

Agreed, but, there were (I don’t know about currently) classes were as cast heads were it. Not ported. Drag and circle track. As we know, some circle tracks require an iron head.

Also on small tracks, like the one out on Riverhead Long Island, is a tiny 1/4 mile track. Now I don’t know but do you need ported heads that run over 300 cfm on a 1/4 mile oval track and more so in limited classes.

Considering the head has large ports that flow 260cfm and can be purchased at reasonable prices bare, they are not a bad deal IMO. IF iron is OK for you.

I have always said there draw back is valve train rocker costs and the exhaust/oval only intake. But the intake is small potatoes. Valve train on a bare head is something most people change out in a loaded head anyway.
Headers are pricey which suck.
Offset rockers are pricey.

Today, there are more choices in cylinder heads than a few years back. It used to be great for a while.

Designed to be ported? I can say with great certainty that you could have oh so easy taken a W2 or W5 sold loaded through MP OOTB (check it and) run it just fine and quick. The W7-8-9, well, IDK. Never seen one built with stock ports.

The late ones do not “require” TD rockers.

I can work up a cost analysis on a W2 vs Edelbrock head. I’d have to omit certain pricing due to a huge variance in cost from machinist to machinist state to state, etc...

I haven’t done this in a while but the W2 is worthy cost wise and performance wise.

rmchrgr said:

Rob, the W2s on my old 340 that went 12.0 were unported. Not my choice, that's how they came when I bought the car.

W series heads (iron and aluminum) were designed to be ported, no? Mopar figured racers would have their individual programs for preparing heads, no way they'd be able to cover everyone's needs with one casting. W2s did in fact get pretty confusing with all the variations over the years. The late ones required T&D rockers ($$$) IIRC.

Regardless, why bother with offset rockers and raised port intakes if you're just going to run them OOTB? Without porting you're not taking advantage of their potential. Will they work? Of course, it's just a cylinder head but they're fairly pedestrian until you hog 'em out.

Just saying, if you are starting from scratch, it's probably more cost-effective to get standard LA heads. W2s are great but can get cost prohibitive.

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rmchrgr said:

Rob, the W2s on my old 340 that went 12.0 were unported. Not my choice, that's how they came when I bought the car.

Click to expand...

Speaking of which, what did it weigh and what cam was in the engine? 340 right?

erickson said:

Has any one here done a large 340 stroker? Looking to do a 414 or 426 motor, Thanks

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I have a set of TTI ceramic coated 1 7/8" W2 headers for an E body for sale if you are still looking?