whats my Horsepower gain with these mods?

i have tons of respect for the slant and the guys that put their love into them. they are making crazy HP with them. they also make for a great reliable engine that wasnt meant for turning impressive 1/4 mile slips. if you want any kind of real HP out of these engines you are going to have to work for it. simple upgrades like ignitions and a 2 barrel are not going to make a real difference. you have to get the thing to really flow before it will benefit from any bolt ons.

Or add some friendly boost.