Thanks for the info guys. There aren't enough Mopar dragster guys around, and especially B1 guys, as Indy seems to have the Mopar aftermarket
stuff wraped up. I'm going to see about loosening up my converter, and if 6700 dead stall isn't a problem, that's the combo I'll move to. What is the top end RPM with this combo? I am still curious what that is on a 1/4 mile track.

Hi Guys, need some help. I have been running Mopars for 25 yrs,but this is my first engine with aluminum heads, block, rods and I am not sure if I have a problem or not.
What oil pressure does your engines have cold then hot?
My dragster sit a little over 4 yrs till last year. I had a battle with cancer and was down for a while. The Auto Meter sports comp gauge was also about 8-10 yrs old so it may have been wrong.
But the engine had a 100 lbs of oil pressure cold and you could raise the idle just a hair and it would go up to 120 lbs. when hot was 80 lbs and would go to 100 lbs. when you hit the throttle. I was told that was to much. Well a week are so ago the oil pressure went down to 60-80 cold and 30 hot did not rev it at 30 lbs. to see if would go up. Put a new Auto Meter Pro-Comp on yesterday still has the same oil pressure @ 170 @ idle about 28 lbs. again shut it off with out rapping the throttle to see if it would go up.
Is this normal or do I have a problem? THANKS

Seems like pretty normal pressure to me as long as it comes up with the rpm,s.

Rule of thumb is 10 psi for every 1000 rpm.

When the oil pressure was way high the relief valve could have been stuck in the pump.

And please make sure you dont have a fram filter on it.

THANKS!!!! sc301v, I have a system 1 oil filter when you clean the filter you can see some shiney aluminum and bronze particles in the oil not a whole lot,I would like to see none. The engine is still fairly new and it has had some the 4-5 times I have changed the oil. This time it had a little more bronze than before,so I may take a look at the bronze gear on the dist. just to be safe. It is nice to have some other Mopar people to run ideas by. Thanks Guys

Yea a little dust particles of some shiny particles is fairly normal.Especially on a new engine.

And to much cam walk will make make it rough on bronze distributor gear.

1995 S&W hard tail here. Car weighs 1880 with me in it. Engine is race gas 493, 280@.050 roller cam, Indy EZ-1 heads (330 CFM), 13.5 compression (ross 14cc domed pistons), single dominator on an Indy -2 mainifold. Rear end is a Ford 9" with 4.30's and a 33.5x17 tire. Transmission is a JW 1.76 geared glide, converter is an 8" JW stalling at about 5400.

1/4 mile times are in the 8.30's with trap speeds of 159 to 160 @ 7500 RPM. 60 times are 1.18. 1/8th mile is 5.30's at about 129. All times are at about 2800 to 3000 ft DA

We mopar dragster guys need to share some information. Not many of us around.

My car seems a little slow to me. Do you think I need more stall? I was expecting to be closer to 8.0 than 8.3.

Bob Spelic

first thing I would do is take the wing off. that could be .1 right there. what is your launch, shift and trap rpm?

edit, I see trap rpm of 7500, sounds like too much for that mild a combo??

MegaDart, mine has a wing also,maybe not as tall as his. Mine is about 5' or a little more from the ground to the top. My dragster has a 218" W.B. and will run in the low 140's in the 1/8 mile all of our tracks run only 1/8 mile for the weekly Bracket Races. I have only made a few runs with the big engine at this MPH. With the 451 engine it run in the mid to high 120's. It has always handled good,well after I put about 35 lbs in the nose with the big engine. But I would like to pick up a tenth by taking the wing off mine also. Do you think it would be safe to do on my dragster with the short 218"WB? THANKS

for 1/8 mile certainly, the wing really doesn't do much except slow you down till the big end, ie, 185mph+.
Losing the weight on rear tire might require some adjustment though

About the lower oil pressure, if there is nothing in the filter (tablespoon or more) I wouldn't worry about it. But I would be concerned about the bronze or copper colored metal. Keep am eye on that real often. The bronze dist. gear will cause that, but be sure it doesn't increase. My car idles at 28lbs, and goes through the traps at 72lbs at 7500. It always had that low pressure since new and I check my system 1 every 20 runs with no problems. I go 180 with no wing, and I started a new thread for us nutty dragster guys for information.

I pulled the bronze gear out,the teeth look fine. But under(bottom) the bronze gear is nice a shiney and has a good bit of wear,also where it sets in the bushing in the block the shaft also has some wearlooks like it has been sanded with sandpaper (very small ridges or grooves)if you could hold it straight. Looks like it may have had to much pressure or downforce on it,and it looks like the bushing has tighten up on the shaft. Going back to see if I can figure out what has gone wrong.

Thanks for the info. camastomcat thats makes me feel a lot better.