Stainless Steel Manifolds

the only thing about jet-hot coating is it has to be on the outside and inside for it to work right. With the jacket it might not coat the runners very well and cause problems. With headers it's not that big of a deal but with the jacket it might trap an air pocket when they dip them and not coat inside the jacketed area as well as it needs to be. Guess if the person dipping it rotated while in the tank to makesure all of the air is out then it should be ok. diffently couldn't just drop then in the tank along because air would get traped unless it was under vaccum in a pressure vessel.

he's out sorcing the polishing and coating anyway wouldn't see why he couldn't have then jet-hot coated might be a little more after shipping cost are added, then your at the polished price anyway so you might as well buy them polished, your spending 1400.00 already what's another 300.00 for the marginal increase in performance. Once I looked at the comparison on their website, the gains don't kick in until the higher RPM range anyway and there's very little difference from idle to 3500 rpm which is the range you'll run the most. Again they look great but to me not worth the cash layout.

TRBenj wrote: As for performance, I get an instant 3200 RPM out of the hole so I should see some gain there.

didn't know thay made stall converters for boats, where did you get that at?


You are full of so much sh*t half the time.

I cannot wait to see you guy's together at GL this summer!!

Mark, make sure you put your hair in a ponytail so I can look back thru my mirror and still see around you to see them. I'll bet if jbear tried to pull his hair back, he'd have to use a bungy cord. I'm gonna grow a skullet. Similar to the mullet, but only with no hair on top and long hair all around, i.e,. Hulk Hogan. I reak of jealosy.      

I'm putting a power glide in my next boat. Gear heads and old guys know what that is. Heck '79, you of all people know that the instaneous slip of the prop is about as close as you could get to simulating a stall converter, but even better without the sudden bang. It's also what allows a boat to run some extra cam without demonstrating the typical low-end torque loss seen in a car and necessitating lower gear ratios. I'm still studying the holeshot and speed issues of the 1.23 vs 1:1.      

I can only add that my boat does similar, instant 2.9-3k when I nail it to rabbit, it launches hard and holds that rpm to somewhere between 17-20 mph then seems to grab more firmly as rpms climb from there with speed more linearly. mine is 1:1; Its done that since I put the OJ 4 on it. Doesn't do it with the federal, POS acme I tried, nor so much with the OJ-3.

Engine goes straight to the torque peak and when it grabsfirm, the boat just slings out of the hole like a banshee instead of the rpms dropping when the slip fades.

Engine is nothing special (yet) other than a good state of tune, hot ignition and mapped advance curve.



I suspect the 1.23 is a superior, more efficient system because of the lower tip speed, potentially less parasytic losses above 40 mph.

Like I said, I put on a new fuel pump and a K&N, I dont know which one did it, but it made it much faster in the midrange, not much at the top if any at all, it picked about 100rpm!

If jbears boat goes 50mph, I still dont think that will move his hair...   

Mark it was the chrome, it's always good for more speed just because it looks good.