I just made a Gumballhead clone a few weeks ago and it came out pretty close. the clone had more body and head retention than the original and turned out a little darker and a tad more bitter than the original. I used the "brew in a bag" method but a standard all-grain setup would probably work just as well. The only thing out of the ordinary I did was to add all of the hops in the last 10 minutes of the boil. Sorry for the small batch size...I'm limited to Mr. Beer fermenters until I get a little more extra cash. Hope this helps!
Batch size 2.8 gallons
Boil size 3.6 gallons
Boil time 60 minutes
Grain weight 6 pounds
Efficiency 75%
Original gravity 1.060
Final gravity 1.017
Alcohol (by volume) 5.7%
Bitterness (IBU) 27
Color (SRM) 5.5°L
Yeast
1 liquid packs
White Labs
WLP051 California V Ale
Grains/Extracts/Sugars
6 pounds
Torrified Red Wheat
38ppg, 1.5°L 3 pounds
50%
2 Row Base
36ppg, 1.5°L 2.5 pounds
41.7%
CaraVienne
35ppg, 20°L 0.5 pounds
8.3%
Mash
60 minutes, 4.8 gallons
Strike
Target 152°F 2.2 gallons
163°F
60 minutes (+0)
Sparge
Target 170°F 2.5 gallons
178°F
Boil
60 minutes, 3.6 gallons
Wort chiller 15 minutes (+45)
Amarillo hops
8%, Pellet 1 ounce
10 minutes (+50)
Amarillo hops
8%, Pellet 1 ounce
5 minutes (+55)
Amarillo hops
8%, Pellet 0.5 ounces
1 minutes (+59)
Ferment
14 days @ 66-70°F
Dry Hop
Amarillo hops
8%, Pellet 1.5 ounces
7 days (+7)