do yall thing i can give my buddy a run for his money?

with the build up you have posted I dont think you would get better than high 16's at best. your car is 400-500 pounds heavier than mine with the same build up. you will need a cam and 3.91's or 4.10's to get to the low 16's

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You could very well need a cam and a higher rpm stall converter in addition to the other stuff you've mentioned.

I'm running a best of 18.96 with something like what you've described minus the bigger valves, with 2.76 rear, no header but pretty open exhaust, and estimated 8.5 compression, super six.

I guess you'd be in the 17.5 second range (but I'm pretty new at this). My money is on 70valiant if he ever notices the light is green

I have a little more respect for how hard (and expensive) it is to get 15's.

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1980 Aspen 225 super six

i was prolly gonna go with a Comp Cams 252. does mopar performance have a cam that is comparable in specs? i prolly shouldnt go lower than 3.23 because this is my daily driver.

aw come on Paul, I was trying to give you a chance by pulling a 1.287 light
my next 3 were .733, .607,and .708 those aren't bad.
yes I agree with 3.23's being about as steep as I would go for a street car.
that is why an 8.75 rear is so great. you can swap centers in under an hour. If you are lucky as all getout and find a complete Drum to drum rear for $250 and have a brother-in-law willing to lend you a center with 3.91's just for racing, you are set.
I can not believe my brother-in-law found an 8.75 complete drum to drum with 3.23's and a sure-grip at pittsburgh for $250. I just had the drums turned today. now I just have to open it up clean it paint it and refill it with new fluid.

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How good of a rear is the 8 1/4. There is lots of those around here. I have pretty much creamed my 7 1/4. It makes a loud a howling noise that gets louder the harder you press the gas.

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82 D150-225/727
02 Dakota-3.9/5 speed
87 GMC C7000-8.2 Detroit Diesel/5+2

An 8 1/4" rear is not as strong as an 8 3/4" but you will never break it with a street slant. It is the standard rear for most medium weight Mopars after 1972, including the Grand Cherokee today. Only the last big C bodies got anything bigger. I have 8 1/4" rears behind my 360 dart 4 speed ,and my turbo slant Dart 5 speed. So far, so good.

The 8 1/4" will survive behind what ever you are building, they were even put in mid-70's Fury and Newports with the 400-2V (400-4V and 440 cars got the 9 1/4" rear...)

The only weakness of the rear is the 'c-clips' that retain the axle shafts, they don't take 'side loading' too well (no 'bullitt' chases 7 days a week, or Xtreme autocross...). I have yet to bust one though, but I don't drive like I'm 17 and evading the fuzz either....


The comp cam 252 is a good 'street' cam a little better than stock, I think if I were going to go for 4 barrel and oversize valves I'd check into the Isky grind or a comp cam's Xtreme Energy 'mild grind' (like the 262 lobe).
If you were running about 9:1 compression a super six intake, big valves, I'd grab the 264 cam if you want an 'off the shelf' it's still very mild also, and you can always get a Mr. Gasket #1937 adaptor plate, and rebuild a Junkyard Holley 2300 to go on it for more CFM and tuneability...

-D.Idiot

so a comp cams 264 might be my better choice. will i have any lope in my idle with this cam? how high of a stall converter would would i wanna run on a setup like this?


what kind of cfm does the holley 2300 flow in four barrel numbers compared to the Holley 390?