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I believe I have a set. I'll check in the morning Doug

May just have be a fat spot in the water jacket. The drill and tube is easy at home. Doug

I'm with thw clean it seal it crowd. The Yamahe genrrator in my trailer leaked between th ecase halves. Took all the bolts out and pryed the case halves apart about 1/8". Cleaned the gasket out with an exacto blade. brkleen it a few time to make sue all the oil drained. Filled the gap with...

Why not just drill the block passage oversize. Then sleeve it with a piece of tubing?? Doug

ISo if you put your finger on the shaft pedestal you can feel air? If that head is removedten you can tell if the leak is in the block or head. If no crack is seen in the leaking part ( be it the head or bock). Then sleeve the hole with a piece of tube. One final thought. Is it possible the head...

Is it the passage in the block or the head? The cause of the issue in the block we had was core shift. It wasn’t cracked. The passage intersected a water jacket as the entire block core was off to one side. Drilled the passage oversize and sleeved it with a lock tighted tube. Not sure how close...

Why not air up the oil gauge passage and see if it pressurizes the coolant passages. It’s a 5 minute test. Doug

You will have no issue. The 3 pin planets will live easily to 700HP. The 4 friction front clutch is more desirable than a 3 friction. However on a stock engine the 3 plate wont be an issue if it's in good shape. It's possible both trans are 4 friction. The rest of the differences are calibration...

I'm not much of a believer in the rod/stroke ratio deal. Get the stroke you want. Find a light piston that will fit a ring pack, pin in a decent location. Use a rod that puts that zero deck. The R/S ratio is what it is. If you can fit a longer rod? Great now the piston is lighter. But no sense...

Friend had a Koleno block that leaked oil and coolant together. Made a fitting for the oil pressure gauge port. Coonected it to shop air. It blew coolant out of the radiator. Turned out it had the right side oil feed hole in the block from the cam into a coolant passage. Easy test Doug

The top setup looks pretty good. Bottom pic pinion is too deep. Doug

If it has no kick down most likely not the governor circuit. It's lack of throttle pressure. Need to put a gauge in the accumulator port. Start the car with the lthrottle linkage disconnected. Move the throttle arm at the trans back fully. Pressure should rise at least 50 psi. Throttle Governor...

You need clearance for a 3/8" bolt. Wall thickness? How brave are you? I would say .125" in aluminum. Maybe .090" but that might crush when tightened. Fully story on tubing. Years ago I crewed On Koffels B/D comp car. it was a 5 speed Liberty. The driver who was good at the tree was struggling...

The trans stuff is actually quicker than gear set up. I HATE gear set up. Just went thru a push button trans with no kick down. Easy diagnosis when you get there. In this case it was a crack in the wall of the valve body next to the throttle pressure valve. Doug

You could certainly fab a new one. Especially if most of the floor needs to get cut up. But if it's only the tunnel than needs mods? Probably a lot less work jut to slice out the center of the crossmember and tunnel and not beat up the rest of the floor. Then just enlarge the tunnel and add a...

You are correct in your reading of the pattern. More pinion shim is needed. I'd add .010". if it's to deep then you can zero in instead of makiking .003" at a time a bunch of times. Earlier I thought you said you had a 489 case. Hence my pinion shim starting number and location in post 27. Since...

My 11.0@3885 lbs (ya I know it needs a diet) street car (that has numerous passes) has never broke anything with a 8 3/4. The lighter quicker 9.0/9.25@3350-3600lbs) racecar is on it's 4th set of Dana gears. Doug

A Dana is not 100lbs heavier. 50lbs at most with a sure grip. Wthh a spool the difference is even closer. Not to mention that a Dana has a more efficient pinion height. Most anyone I've ever seen that has done back to back tests has not slowed going to a Dana. When making a part light it's only...

What would happen if your running the car in D and the sprag wasn't holding? The rpm would ramp up imediately and the trans would shift into 2nd. As a side note: The "Super Sprags" are actually Ford C6 rollers and springs with a modified 727 in race thats had it's diameter reduced. The outer cam...

You won't go wrong with Molar crank/rods. Pick pistons to fit what compression you would like depending on which heads you intened to use. Doug