A different SSGT question?

[Philip Saran]

Please educate me,

IF I was to run my 383 Duster as a SSGT car, the long block parts needs
to be legal for the year claimed (70 or 71), the correct carb must be used,
but what about the intake manifold? Aftermarket OK?

Other than that, cam and pistons #'s must be what is in the tech sheets?

As you can see it's pretty boring around here this morning.

[Wade Mahaffey]

I thought it was any intake (right number of carbs in your case as claimed 1 4B ) that fits under your flat hood. But check futher...I'm new at this. LOL

Wade Mahaffey

[Paul Precht]

It's a Superstock motor put in a different year body. I'm building the same motor, it's rated at 304 HP for GT. In a Duster you'll fall higher than GT/HA so you'll need a full certified cage for starts.

[Jeff Teuton]

Pistons can have notches in SS I think and I think there was an available scoop in a 74, so a live scoop is ok since the 383 had a scoop.

[Jeff Lee]

Originally Posted by Philip Saran

Please educate me,

IF I was to run my 383 Duster as a SSGT car, the long block parts needs
to be legal for the year claimed (70 or 71), the correct carb must be used,
but what about the intake manifold? Aftermarket OK?

Other than that, cam and pistons #'s must be what is in the tech sheets?

As you can see it's pretty boring around here this morning.

SS must have heads (casting, valves, chamber, runner volume), carb, piston configuration (top view; i.e., if NHRA says "flat with notches" it can't have a dome), bore / stroke / deck tolerance, accepted rods per NHRA tech guide.
Any valve train or intake (relative to OEM configuration), porting within specs, and a few other items allowed. Consult rulebook. SS is the next level above Stock.

[Philip Saran]

Originally Posted by Paul Precht

It's a Superstock motor put in a different year body. I'm building the same motor, it's rated at 304 HP for GT. In a Duster you'll fall higher than GT/HA so you'll need a full certified cage for starts.

Paul, if I looked at the numbers correctly, my 1974 Duster has to be at the
highest weight of a 360 Duster at 3400lbs so it should fall into SSGT/FA,
but maybe I did it wrong?

[Jeff Lee]

Enter shipping weight for chosen body style -> 3242.00 lbs
Enter factored HP for chosen engine -> 300.00 HP
Enter A for automatic, M for stick -> a A or M

CALCULATED VALUES:
Minus 250lb permitted shipping weight adjustment 2992.00
Plus 250lb permitted shipping weight adjustment 3492.00
"Natural" class -> GT/FA Wgt Break-> 10.81 GT/F
Lowest legal class -> GT/DA Wgt Break-> 9.97 GT/D
Highest legal class -> GT/HA Wgt Break-> 11.64 GT/H



Class GT/DA GT/EA GT/FA GT/GA GT/HA
Index 10.50 10.65 10.80 10.90 11.05
0.3 under index 10.20 10.35 10.50 10.60 10.75
0.5 under index 10.00 10.15 10.30 10.40 10.55
0.8 under index 9.70 9.85 10.00 10.10 10.25

MINIMUM Weight 2992.00 3000.00 3150.00 3300.00 3450.00
MINIMUM Race Weight incl. 170 lbs for driver 3162.00 3170.00 3320.00 3470.00 3620.00

Estimated HP required for E.T. #1 (SEE NOTE 1)
Index 516.9 496.7 500.1 509.6 511.4
0.3 under index 563.9 541.2 544.2 554.1 555.4
0.5 under index 598.4 573.8 576.5 586.7 587.6
0.8 under index 655.7 627.8 630.0 640.6 640.7

"NOTE 1: Flywheel HP requirement to achieve E.T. based on the Chrysler estimation equation:
HP = Weight * 200/(ET^3)
using the Minimum Race Weight."

Estimated HP required for E.T. #2 (SEE NOTE 2)
Index 498.8 479.3 482.6 491.8 493.5
0.3 under index 544.1 522.2 525.2 534.8 536.0
0.5 under index 577.5 553.7 556.4 566.2 567.0
0.8 under index 632.7 605.9 608.0 618.2 618.3

"NOTE 2: Flywheel HP requirement to achieve E.T. based on uniform acceleration equation:
HP = Weight * 193/(ET^3)
using the Minimum Race Weight."

[Philip Saran]

Thank you Jeff Lee, now all I need is for the Lotto numbers to fall my way....

[Jim Hanig]

Originally Posted by Paul Precht

It's a Superstock motor put in a different year body. I'm building the same motor, it's rated at 304 HP for GT. In a Duster you'll fall higher than GT/HA so you'll need a full certified cage for starts.

Not so ,it starts at gt/ga

[Patric Fox]

I thought for Super Stock that you can use any intake manifold as long as it is configured the same as the original manifold.