8# butt needs..... 8# x 454 = 3632 grams
3632 x 0.02 = 72 grams salt
3632 x 0.01 = 36 grams sugar
3632 x 0.0024 = 8.7 grams cure #1
injecting liquid... 3632 x 0.1 = 363 grams or 363 mls water.. (10%)
If you want to add spices, you can warm the spices gently in a frying pan to release the oils then add those to water and simmer... remove the spices, after the water cools, using a couple layers of cheese cloth, so your needle doesn't plug... then add additional water, if needed, to make back up to 10% weight of the meat... add the sugar, salt and cure and stir to dissolve.... then inject (5-10 mls at each injection) to thoroughly get into all the meat ... about every 1 1/2" around the meat.... be sure to get the bones and joints... Rest in the refer for about 6 days then smoke and cook.... If you don't use cure, you can cook in 24 hours... the time is for the ingredients to get absorbed in somewhat equilibrium state... longer than 24 hours is OK too....
The 6 days is for the cure to work and get evenly distributed throughout the meat...
You can get syringes at your local feed store for about $2... get the biggest needle I think a #14 or #16 OR use the syringe that comes with
That is the syringe and needle I've been using.....