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You mean... gear drive vs timing chain? The timing variance from stretch is zilch with a gear drive. You can hear them more though they make loud and quieter versions.

I agree...Those manifolds are also total pieces of casting nightmare *****. The port windows are a mess all of them are too low. Now the Hughes you post a link to, that's a nice piece

2400 stall. Delenzi Dynamic Hughes Coan Your local builder

Before changing bleeds and emulsions... did you simply try adjusting the 4 idle mix screws about 3/4 out? Is the power valve correct?? One jet size up ? Simple stuff first

I love all this Chinese talk ..when people are bolting on Chinese heads on left and right. I have a few gauges I bought off ebay, they'll last my lifetime.

If pump gas which I'm not sure that is at 11 to 1.3but maybe with that cam it'll work fine, I probably go like one step colder than stock maybe even stock, it depends on the tune. But there really is no special plug for a stroker as others have said

This guy could have a set of induction hard and shafts on there that are 3/8 thick wall and not even need the center stand clamp force with the kind of spring he'll probably use. What's this for? I'm doubting these heads will be used for any kind of serious effort so replacing them is washy

Pretty soon this threads going to be called ways to make something over complicated LOL If you're offended by my sarcasm, so be it.

I would Mount that on my 1960s Craftsman that has a an adjustable tilt swivel table and not Mill a damn thing I would simply line the bit up with the existing piece after I had it mounted and dial it close enough to get a ******* stud in it LOL

I agree with the points made but... He asked if the head was fixable, it is... and it's not rocket science or expensive. Lol

You need to fix your cooling issue. Whether it be a water flow issue or lack of fan at low speed or even and your timing is wrong

You'd think some of you would have a drill press lol

Just being blasting and clear them

I agree but we're talking $60,000, kind of something like those guys did when they threw NASCAR / p7 or greater in back in the 90's. It's sad 15,000 grand can't snatch a 1000 na hp, really sad. We can just turbo the old ****, 440 for instance , and be ahead money wise... and then buy $$$$ Billet...

No it's not ruined. You can do a couple things here.. like... you can tap it , the lower portion, and run a stud on that stand by then drilling out the upper threads of the broken part , you will use a nut on that stand from there out.

I'm with the others ... in that it's on the edge of mech advancement during the vac instability

It probably need to do some jetting and possibly pump shot Tailoring. The timing needs to be set up, engine warmed up Advance the timing till it starts to kick back when starting it then go back to degrees note that timing setting. After that you'll need to take the distributor and tailor the...

Tune it. He probably didn't put the timing or anything else back the way it was, and that's just speaking of the very least.. it ought to be tuned for it's current configuration. The carb size, is it the same or bigger?

Bores wear... They machine/bore to the next size they can safely make them round again to. Simple as that. Next...

Upon returning to idle from a rev up in full advance it's lean. Or a miss. It's 12.8 at idle, then it's 14.2.. right? Should be 13 something or so at idle and richer at throttle. Unless I'm reading this post wrong. Is this a dial back timing light?

I see that with the 2.08 cut.

I bought the Jegs bench vise style spring pressure tester. What I did was I bought a Comp Cams adapter that allows you to use a drill press as your spring tester the adapter goes in the chuck and presses flat against the actual spring tester. I found it to be very accurate and easy to use...

I've never found one that thin.

Don't know what part number cam bearings you got but many Durabond cam bearings are soft. Pioneer makes a better dampener. I'd have spent on a mancini Billet timing set at that cost. Hv pump, unnecessary and the rings... overboard, hastings would be a great fit at quality and cost. I'd use the...

They are .019-.021

Sometimes when they cut for hardened seats if this is the case they get into water and the seat leaks

In your case, or this case, I would say the compression could be a little higher so it ends up more closer to 30

Open chamber with 140 psi likes 36 total on typical 87 octane Open chamber with 190 psi likes 28 total on 91... meaning less if 89 octane is used and and even less if 87 octane is used, like say...24. Those examples are half useless when you figure the chamber itself has a preference...then...

Echo

Gears. More often than not... the big parts go in... and the rear gear and convertor stays the same. More often than not... The motor isn't properly tuned afterwards.