First time out with new motor

Posted By: Mr340

First time out with new motor - 09/20/09 01:54 PM

Took the car out to Lapeer yesterday for some T&T. It ran good, a best of 12.35 @ 113.32 and that was with a 2.0 60ft. Good MPH for this combo,I need to work on traction first then fine tune.

The Car: 73 Challenger 416 stoker 10.5 cr. Comp hydraulic 250* with .525 lift M1 single plane w/holley vac secondary 750 Hooker SC 1 3/4" thru 2 1/2 pipes to dynomax super turbos exiting at the axle. 727 with a 3500 stall 10" convertor to 4.30 gears on BFG 275/60x15 drag radial @18psi.

I have the rear springs clamped but I'm thinking Super stock springs and a Pinion snub should be the next step.
the car weighs in at 3780 with me in it(yea I know get out and lighten the car 200lbs). I have a set of e-body SS springs rate for 3300lbs. do you guys think these would be worth a shot or should I sell them and pick-up Higher rated springs(3600 or 3800)?

thanks

Posted By: DaKuda

Re: First time out with new motor - 09/20/09 02:02 PM

They will work fine and you will take a beating selling the ones you have...

Posted By: Cab_Burge

Re: First time out with new motor - 09/20/09 04:32 PM

Before you change the springs buy a set of good drag tires

As far as a pinion snubber don't waste your time or money, a good set of springs will never let the snubber hit the floor

The springs you have should work well with a good set of tires as long as the rear shocks are not topping out

Did you clamp the front half or all of the springs?

Posted By: Mr340

Re: First time out with new motor - 09/20/09 08:14 PM

I clamped the front segment. The shocks are the Mopar drag shocks, should be long enough, but a good idea to verify.
A "Good Drag tire" being Slicks? Or Mickey Street radials?

Posted By: Shaker223

Re: First time out with new motor - 09/20/09 10:15 PM

I'm curious too...what is a good drag radial?

Posted By: B1Fish540

Re: First time out with new motor - 09/20/09 10:26 PM

Quote:

Before you change the springs buy a set of good drag tires As far as a pinion snubber don't waste your time or money, a good set of springs will never let the snubber hit the floor The springs you have should work well with a good set of tires as long as the rear shocks are not topping out Did you clamp the front half or all of the springs?

And a good set of adjustable shocks to get the car transfering weight. I bet the car will run 11s with a good setup...not bad for Lapeer

Posted By: Hemiroid

Re: First time out with new motor - 09/20/09 10:35 PM

Your mph says 11.90's, so get that 60' down to 1.65 or so and it should be high 11's all the time.

Posted By: 383man

Re: First time out with new motor - 09/20/09 10:49 PM

With 113 you have easy 11.80's with good hook. Get a good tire under it and like was said a good shock up front to transfer weight. Good luck , Ron

Posted By: Triple Threat

Re: First time out with new motor - 09/20/09 11:42 PM

Quote:

I'm curious too...what is a good drag radial?

A M/T ET street radial is all I've had on my car. I've been 1.62 60 foot on a 235/60/15 with some old worn out super stock springs.

Posted By: Mr340

Re: First time out with new motor - 09/21/09 02:19 AM

Currently I have Mopars' hi-performance handling shocks on the front, I have a pair of CE 90/10's I can swap out. I double checked the rear shocks and they are MP's drag shocks. I'll install the SS springs and look for a stickier rear tire. Elevens here I come!

Thanks,
Gary

Posted By: Cab_Burge

Re: First time out with new motor - 09/21/09 03:56 AM

Do you have a old set of front shocks that you don't need

If so drill them at the bottom and drain them first(be careful,don't get any of that stinky oil on you

) before buying a set of 90-10 race shocks

I have tested a lot of front shocks on different cars, I now have the Koni SPA on the front of my street car ( BB powered 1971 duster)that runs 1.43 60 ft. times on M/T ET Street Radails

Those shocks are good shock for both the strip and street, they are speed sensing according to Koni

BTW, if you want a set you have to buy the ones for the B bodys as Koni doesn't list them for A bodys like our cars

Posted By: Mr340

Re: First time out with new motor - 09/21/09 11:53 AM

Cab the CE's I already have. they are adjustable, 90/10, 70/30 and 50/50 I think. I can try these but if I'm not happy with them I may look into the Koni's, I like the idea of a good steet/strip shock better than a race shock since the car does see plenty of street time.
Thanks,
Gary