At the January meeting of the Twin City Powerboat Association, the GT Pro Rules Committee presented the revised rules, the board approved them, and now they will be brought to the APBA national meeting by Region 8 chairman Al Tucker. The revised rules:
GT PRO Rules
A. Driver's Minimum Age 14
B. Motors (NOTE: see also OPC rules #24 and #25 regarding replacement parts and modifications.)
1. Any 35 horsepower, two cylinder, 31.8 cid. Johnson or Evinrude is allowed.
2. Unlimited part swapping with parts origninal to the 31.8 cid. OMC powerhead is allowed.
3.Engines must be stock, -- as manufactured (no blueprinting) -- with the following exceptions
a. Rpm limiters and oil injection systems may be removed.
b. Electric start may be added
c. Solid or pinned motor mounts are allowed.
d. Tiller arms may be removed
e. Air silencers may be removed
f. Skeg wear bar may be removed
g. Under-flywheel ignition may be converted to powerpack ignition using OEM or
aftermarket parts/kits.
h. Neutral start switch may be removed
i. Cylinders may be bored .30 over and fitted with OEM oversize pistons.
j. Reeds of any material, OEM or aftermarket, are allowed.
4. Power trim, manual-trim or spoilers, adjustable while the boat is underway is allowed.
5. Transom adapters for raising, lowering or extending the engine will be allowed, but must be fixed while
underway
6. Two 1"diameter holes that can be readily plugged (for testing) may be drilled in the lower unit above the
cavitation plate.
7. Cosmetic appearance of engine may be changed.
8. Engines must be securely bolted to the boat with a minimum of two bolts
C. Boats: 10'0" long, 48" wide minimum; Minimum Weight 650 Lbs.
1. Boats of any material, homebuilt, custom-built or production, are allowed
2. Boats may be v-bottom, modified vee or tunnel (no hydroplanes). Four inch minimum tunnel depth at
transom.
3. Drivers must be sitting in a seat at all times, using a foot throttle and steering wheel.
4. Junction of seat and seat back may not be more than 36" rearward of midships.
5. Boats must have a minimum of 3 cu. ft. of floatation foam.
6. Boats will be required to start off plane.
D. Propellers – Any propeller, prop nut, washer and thrust washer.
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