1hp does not seem like a good estimate for the HP draw from the clutch fan

 

You'd be surprised how the efficiency of the clutch fan goes up as soon as you start moving. Google it and you'll see. The only results that had backing dyno's showed the clutch fan working within 1-2hp. The claims of like 10hp+ never had real numbers to back them up. The alternator is going to be robbing power off the crank as well. If anything the biggest benefit most people have found is dropping ~30lbs lol

 

Anyway - so what's my best bet for a complete exhaust? Main emphasis being on performance and durability but also cheaper is obviously better

 

Last dyno I saw with my own eyes was a '06 Hemi, Flex-a-Lite efan freed up 14 RWHP...

 

That's solid. Were other variables accounted for? I'm not doubting it's possibility for sure. I'm just not sure if it's worth it or not. Seems like they're not the greatest from a reliability standpoint...

 

Well they push more CFM and have been being put on vehicles for over 10 years. Must be fairly reliable

 

There were no "other variables", the truck was dyno'd, the efan was added and the truck was dyno'd. Was a job done at KRC Performance in '06.

I dunno, can't vouch for HP gains on my truck cause I haven't dyno'd it, but I will say I installed my e-fan in April of '06 and have had no issues to date AND gained a solid 2 mpg in city driving, highway is about the same.

As far as suspension lifts destroying CV's that's not true at all. Increased CV angles and wheel/tire weight is what shreds CVs. A properly designed suspension lift will not raise the angle of the CV shafts significantly over stock angles...

 

Yes and no. A clutch fan will outperform an e-fan at high RPM, CFM isn't everything. When I say reliable I don't mean like the concept of an e-fan being reliable, but I've seen a lot of people who needed to replace the e-fan motors 2 years in, etc.

Hammer, those results are impressive. All I meant by other variables were like humidity, temp, etc. I didn't even know for sure that the dyno's were done on the same day. Thanks for clearing that up. It's also reassuring to see you've had great success with the e-fan.

Also, yes, increasing the CV angle is exactly what I meant. I know some kits change the angle too drastically and can cause issues. Also, generally those running a suspension lift put on bigger (heavier) tires. I know my tires and wheels together right now are around 90lbs a piece.

 

Before you jump into headers.... you said you had to pass inspection for emissions right? Does NY require CARB parts? Do they do a visual inspection? If they do either of those, kiss the LT's good bye unless you can get someone to "look the other way" at the emissions place.

 

NY does not follow CARB nor do a visual. They just hook up to OBD II, I don't even think it's a sniffer test on new vehicles. CELs would be bad though.