Jaun, my thoughts on the stall speed were similar to yours but several have said repeatedly that you don't even notice it until you stand on it. Now automatics, on the other hand, have been in use for a long time and in fact are the transmission of choice for many racers. The torqueflite has a long and storied history of racing and the powerglide, of all things, is the latest hot ticket. The torqueflite was years ahead of the industry in terms of engineering and is noted for its efficiency and relability. In fact it still forms the basis for Chrysler's 4 and 5 speed automatics to this day. I agree that a radical engine will be difficult to street but not because it has an automatic.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

I think this is a reasonable request and one that I can't answer except this: Seymour Pederson drove his 62 Valiant from Minnesota to Las Vegas and ran 13s. Now, you're right that it will be more difficult for you because you give away at least 500 lb with your late A-body. You're also probably correct that you can't do it without a power adder and I don't believe that many can. From the limited runs that I've seen, Doc runs 14s without and 13s with juice in his early A. I don't know what Pederson has. All I can say is that you've come a long way and with a little more perserverance you'll likely be able to have a very quick and competitive car. And there's nothing wrong with power adders.

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David Kight
'62 Valiant Signet, White
'98 Dodge Dakota
'06 Jeep Liberty

Growing older is unavoidable but growing up is strictly optional.

I saw Seymour about 5 years ago at a north GA Slant Six Race.
He drove his '62 Valiant street car down, it was running the quarter mile equivalent of low to mid 14s.
I don't know how the motor was built up but all it had for carburation was a BBD on a M1 intake!
If the race was at a lower elevation, he would have knocked at the 13 second door and just a swap to a Holley #4412 500cfm 2bbl would have got him in.

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Slant Cecil

Seymour ran drag week a couple years ago and averaged 13:98 with a 500 Holley on a Hyperpack intake, on street tires, and I think through the exhaust.

His motor is pretty much a copy of mine except for camshaft.

His car is lighter than most Slant race cars, and is a stick.

However, no one on the planet can argue that Seymour's car is not a true street car in every sense of the word. He gets my nomination for the "Iron Butt" award too.

Last year at St. Louis Seymour was really considering putting his car on the hose. I have no doubt that well tuned on a 150 shot he could run deep into the 11's. He changed his mind when mine ate a piston on shutdown.

Bren, keep at it, I think you're learning a lot here. I'm betting the car will run very well when you're done.

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Official Cookie and Mater Tormentor.

Anything 258 cid should get into the 13's N.A. unless there are some seroius resrictions. The slant has restriction. The big restriction is the small valves and bowls. The larger bore helped you get larger valves into those slugs to feed all 258 cubes.

CID is nice but efficiency is key to getting every little bit from every CID.

Those heads (cumbustion chamber side) look really rough. Enough rough edges and you will get what you (have) had, predetonation. Racing fuel will only mask the problem. Messy head work just screws up the flow and flame paths. A stock casting looks neater than the pictures I saw.
If it were my project, I would smooth out all of that mess and sharp edges, flash and pitting or hire someone who can do it right.

Its got big valve to go with the big bore. 1.86/1.5 - 11/32 stem. There is no shape edges in the combustion chamber that would glow and cause detonation.
I will agree that the port, now that it was pointed out, seems as if it could have used a bit more work.
The motor back in the car and I hope it never comes out again.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Hows it running now back in the that 258 cbue monster of a slant hope to see ya whip some pavement ass take it to the track and get some times i'm curious. Hopefully I can get my motor together in the next work or two and tune and make some more runs. Keep us posted


Kevin

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Trans is holding me up at is point.
http://www.slantsix.org/forum/viewtopic ... c&start=15

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Trans is back and back in. Details on trans will be posted in the transmission section.
Set timing to 25* total no vac advance hooked up. Seemed like a good starting place. Not sure what to think. Took it for a little spin and it was late so I don't have many details and I didn't really open it up. I would swear that there is a vibration in the engine or the torque converter, but this maybe just because I haven't drove it in a while and I am not used to it. I've been driving modern vehicals for the last month. Could the vibration be coming from the engine not being rebalanced after .031 was taken off the piston tops. Not sure if it was or was not rebalanced.
I understand that running race fuel in an engine that doesn't need it will usually result in slower times. I still have 99 octane in the tank. Will I be able to notice the power loss in the seat of the pants or is it so small that its unlikely?

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

I would think you would not feel any vibration from the slight difference you might get in piston machining. Is the vibration in neutral or running down the road?

Sam

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Both. It seems to be a little smoother with a load on it. (driving) It kind of feels like I am running solid motor mounts but I am not.
The wide ratio 1st gear sure does give me the option of smoking the rear tires at will. I no longer cherp 2nd but I think that because the trans shop changed out the shift kit. Apparently the one I had was a B&M and it was way to harsh. I would agree seeing how I could cherp 2nd even with the stock motor. I do miss it though.
I come up on the rev limiter alot quicker and it will take a bit of practice to shift earlier to avoid hitting it. (5800rpm)
The engine seems to start harder when warm than before. I used to be able to just touch the key and it would come to life. That too will take some practice and learning how it likes to be started. It seems to prefer hold the pedel to the floor.
Hoping to go to the track tonight if it doesn't rain.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Does the exhaust sound even? Do you think there might be a miss in there for some reason. You can hear both ignition and valve adjustment misses in the exhaust. I would check your valve adjustment and make sure you did not get one adjusted too tight.

Sam

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Exhaust sounds even. Tomorrow I might pull the valve cover and check lash as I was not the one that set it. Vibration sure seems like the converter. It is very annoying. Ever use a chain saw and weed trimmer for a long time and after putting it down your hands are still vibrating. Holding the stearing wheel is kind of like that, only I am aczagerating a little. Something will need to be done about it. Its even there in drive and not rolling. Follows engine rpm.

Went out to the track today and it was "rain checked". There where alot of heads under the hood.
Tech inspection went like this:
Me: Rolled up.
Tech: "Dam thats one straight Cuda"
Me: "Thank you" Filled out simple form.
Tech: "Pull around to rows 3,4,5 or 6"
Me: "When and where does someone inspect the car?"
Tech: "I just did"
Me: Drove to row 6

Sure seems like a simple process.

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67Cuda,FAST EZEFI,340cu,CR=10.25,RollerCam&Rocker (XR268HR,#20-810-9)(#1622-16)(EddyRPM#60779,#7576), (MSD6AL,#6425) A904, GearVendorsOD, 8 1/4,3.55:1, ClassicAir

Are you using the same flex plate as before?

Sam

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If exhaust is touching anywhere it can cause a feel like that. Or any other metal to metal that is touching the frame or body. IMHO, if it is vibrating because of engine, torque convertor or trans I would be very careful you can kill stuff quick that way (like crank & bearing) or worse.



Jess