He owns a 69 Coronet SuperBee and has always wondered what his HP/Torque #,s and 1/4 mile ET's would be .. So i took it upon myself to have him put specs to paper and ask you guys. He built the engine some 20yrs ago and the car hasnt hit pavement in 15 or so .. He is in the process of getting it back on the road, so anything help you guys can impart is appreciated .. Here are his #,s ..
Its a 383 Magnum/ balanced
10.5 flattop forged pistons, bored 30thou/molly chrome rings
488 fireball cam/steel crank
headers/torker intake/double roller chain/906 heads, shaved 20 thou/ 3 angle valve job/ 850 cfm carb
8 3/4 rearend, 355 gears,clutch pack sure grip
426 hemi 4speed w/10x28 slicks..
Thank you guys:thumbsup:

That is about a high 12 second combo that he gots going on there with those gears. More than likely a Eddy RPM intake would be a better fit for that combo than the Torker as far as rpm range if I remember correctly. But sometimes you gotta run what ya have.

And that is assuming the duration of that cam matches the compression,headers,and intake and gears of that combo.
And that he knows how to shift a 4speed!
When you run a manual trans alot has to do with the shifting skills of the driver.

He needs more gear.A 383 has a short stroke (3.36")they like to turn.Put some 4.56s in it.

He needs more gear.A 383 has a short stroke (3.36")they like to turn.Put some 4.56s in it.

Yep I agree, he could use more gear as that is the first thing I mentioned as well. But if he wants to keep it reasonably streetable then I would go with a 3.91 suregrip and it would probably match closer to his cam and cylinder head capabilities as he is probably not flowing too much cfm with those 906's unless they were professionally ported and flowed.

Yep I agree, he could use more gear as that is the first thing I mentioned as well. But if he wants to keep it reasonably streetable then I would go with a 3.91 suregrip and it would probably match closer to his cam and cylinder head capabilities as he is probably not flowing too much cfm with those 906's unless they were professionally ported and flowed.

I had a few 69 383 4 speed Roadrunners back in the day....The one with the 3.23 sure grip had no get-up-and-go!....The one with the 3.91 sure grip schit-and-get in all gears!....It had the Direct Connection "Purple Shaft" hydraulic cam, I think it was something like .484 lift/284 duration and also had the electronic ignition conversion and headers with the stock Carter AVS carburetor....Man!, that car was fast!:yes: