How much horse would I pickup with longtubes and the pulley?

 

personally i'm not a fan of underdrives on trucks, with all the electronic crap going on, compared to crappy battery, if you're towing compared to cooling, power steering etc. I don't see the power benefits worth the possible downsides.

longtubes, 10-15 tops. more with power adders. pulleys maybe 10-12. combiened I'd say 18-20...

having done a ton of lil bolt ons in the past with the tahoe when it was a gay lil 350.....the blower was the best power adder dollar for dollar.

hell the 502 on motor runs the same as the old procharger, 2800 stall, 4.10's and cutouts with shorties in that slug.

hence why I only had a desire to do boost on the sub and thats it, of course every budget varies, but you have to look for differences with bolt-ons. with boost you can't mistake em.