iam going ot install a spdc vortec tpi intake on my motor but can not find the specs to torque it down at, i see that if iam using the factory plastic intake gaskets its 11lbs but iam using fel-pro 1255 fiber ones and iam sure its higher then the 11lbs, any help would be great, thanx

 

Back before GM incorporated the steel washers in the gaskets to prevent gasket warpage, I used Fel-Pro because they used it. 11ft/lbs is what I used, and I've never had a comeback.