I have in my possesion an 84 'burban with a 454. I was wondering if there were any bolt ons that would give me more power and better gas milage. Such as a certain grind cam, intake, carb etc. Not planning a rebuild anytime soon so new heads would be counter productive with the valves sealing better than the rings and getting too much blow by burning all my oil up. Ordered a rebuilt Q jet from Summitt. I've had a 76 3/4 ton Custom Delux 20 with a 350, an 83 C10 with a 305, and my father's 73 four door Nova with factory 350(not for sale) with Q jets and no problems. Works, stickin with it. But this is also my 3rd post and am now rid of the auto msg on top of the page. Thank you and let the mighty Chevy V8 roar.