Don Terrill’s Speed-Talk

The “standard” D wall radial thickness for a 4.020 bore is .183”...... so the problem is the pistons don’t have a “standard” ring groove depth.

Normally I’d say it wouldn’t be an issue to source some .155 radial thickness rings...... but these days it might be a little tuff.
Make some calls.

They’re not much fun moving around in the shop from bench to bench though.

mudluvr2 wrote: ↑Sun May 22, 2022 12:23 pm Engine made 881 hp

This one won’t make that.

Scott I think your car is awesome so please don't take this the wrong way, hp to car weight says you are 100hp off. So far, I’m basically on that same train of thought. I use the Moroso PS calculator to get a feel for what I think the performance should be. With the dyno I use, the better running c...

Well, that’s more duration than what will be used with the ones I did...... so it should be good.

What were the cam specs you ran with those heads?

The B3V BD is the CJ-HP head.

In theory, with a 2.30/1.72 valve combo you’d have had about .030-.035” seated valve-to-valve clearance.......depending on how deep the seats were cut and how thick the valve margins are.

Has the car been scaled since the engine swap?

It’ll get a little heavier with the hood on it, yes?

The basic combo outlined in the OP seems like it would be served just fine by some slightly reworked factory heads.

It would come down to cost for me.
Whatever the best bang for the buck is that fits the application.

Eliminator offers three varieties of this head.

This “BD” version has normal CJ intake ports, and the exhaust uses std Ford headers.

The overall height of the head is quite tall, and they use pretty long valves, which seems to be more for the version with the raised A460 style ports.

Have you indicated across the lobe to see how much taper it has? I usually check it on the base circle. FWIW, which isn’t much........ in 42 years of messing with Mopars....... I’ve never seen a mention of the Hemi having a low taper cam & lifters. I’ve measured quite a few stock and stock replacemt...

Nice job!!

It hangs on up top quite well with as short as the intake lobe is.

Any gas smell in the oil?

I’m also on board with trying another “known good” carb, and/or ignition.

Anyone checked the voltage at the ignition?

Just a little follow up with these...... I ended up cutting the valves down to 2.23/1.73. The seats had already been machined for the 2.25/1.76, so a little sinking was required to accommodate the smaller valves. In the end the seated valve to valve clearance ended up at .060”-.065” with the heads a...

I figured that’s what you meant....... I just wanted to point it out and give you the chance to respond instead of leaving out there on the interwebs for eternity.