Hey guys, do you think that it's possible to run high 12s in slant? I'm pretty sure the answer is no, but I thought I'd ask. I was reading the article here on stroking slants, and was thinking of boring snd stroking mine to 260. Run the dual Weber setup, Clifford headers, dual exhaust, and do some head work. And what would you recommend for a cam? Oh yeah, this would also have to be very streetable. I'd rather do it without any boost or nitrous, but I know that's wishful thinking. If I was running nitrous, how much would I need to get into the high 12s?

There are MANY cars running in the 12s NA, at least 10 currently, and many more have done in the past. Debatable as to how many are "streetable."

Big things are lightening the car, headwork, high stall converter or good 4/5spd setup, and matched-for-performance engine components.

Lou

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Home of Slant6-powered fun machines since 1988

I'd also want to keep the full interior. By streetable I mean daily driven. It's got a 904 and a 7 1/4, I guess that wouldn't live up to any power. I guess without doing any major lightening, it's basically impossible without anything too wild? But a daily driven, 12 second slant would be cool!

A turbocharger/supercharger at 10-15lbs of boost would put you into the 12's with a street driven car.

Low rearend gearing is important for low ETs but are not good for street use...unless you have an OD tranny.
DD

What ratio would you reccomend? There is no chance of the 7 1/4 living up to this power, is there? If I were to run a turbo with 10 lbs of boost, what cam, converter, and gears would be best? Also, for the 904, I was thinking either tf-2 or tf-3 shift kit. Is the tf-3 too much for a daily driver, or is it manageable? And the welded and reground cranks in the stroker article, are those still available, and where from? I was also thinking about running an electric fan, since Mopar Muscle gaines .5 from taking the fan belt off. I figure an electric fan would at least get some of that back and keep it cool. Sorry for all the questions, I don't know anything about turbos and not much about slants.

Anyone?

I have run the 7 1/4 rear on a mid 13 sec slant, But I wouln't reccommend it on a daily driver 12 or 13 sec car, and it would have to have a sure grip. With a turbo, you would want a mild cam, not a lot of duration or over lap, but lift is good. Forged pistons, and a fair amount of head work. It will require a lot of tuning of the ign curve and fuel trim. If it goes into detonation, the motor will be toast. Don't even think about raising the compression ratio. Most likely will need a converter about 3000 rpm stall speed. Rear end ratio about 4.11 or 4.56. Keep the car weight under 2800 lbs with driver. Not an easy task, but very rewarding.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Thanks, Charrlie. Are there any off-the-shelf cams that would be good for this application, or would something custom be needed? I'm not sure how to dump that much weight, though. '69 Fastback 225, 904, 7 1/4, manual drums, manual steering, and air conditioner. Anyone have any idea of what it weighs stock?

My 66 Cuda weighs 3250 with me in it. Rule of thumb, lose 100 lbs-go .10 of a second quicker. Cheapest way to go., and puts less strain on the engine. I ran an old Crane s-264 cam in my turbo engine. It was the mildest cam they had, in the late 70's. If i were doing it today, I would contact a few different cam companies, and let them make a recommendation. About the shift kit, I think you are talking about the transgo kit. They are a good kit, I'm not sure about the difference between the tf-2 and tf-3. I have a full manual valve body in mine, works great, for the track, OK for a car driven to cruises, etc, would be a pain in the butt for a daily driver.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

I think the tf-3 makes it manual and tf-2 just improves the shifts, but I'm not positive. I figured the tf-3 kit would probably be too much for a daily driver.

The best time I got out of my B-cuda fastback was a 12.74, that was with a 100 HP shot and 4.56 gearing.
At one point I had the car at 2620 lbs, that was with lots of fiberglass, no interior and a 8 point roll bar.
DD
My Cuda before it's untimely death:

Wow, that's pretty light. Mine will have full interior and no fiberglass, except maybe a hood. The turbo sounds like a better idea for what I want, plus I don't like the idea of having to fill it up all the time. I was thinking of a 28 inch tire with 4.11s, maybe. I would still like to get decent mileage driving around. Do you know if the welded and reground stroker cranks are still available?

I have run 12:90's@102 on a 100 shot of spray. True street car, around 3200#. Spray is the way.

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Official Cookie and Mater Tormentor.

I agree with spray, for what you want. With a turbo you need to keep the compression down, and keep high octane in the tank at all times. If your not knowledgable about turbos, it will entail a lot of work to get it running right, and there is a big expense, up front. With nitrous the initial expense is lower. You can keep the compression higher, which will help fuel economy. Use a separet small fuel tank, just for the nitrous system, and keep the good stuff in that, for when you juice it.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225