Ceramic coating will also reduce under hood temps by 20-30º, or more
Un-Coated LT's throw off some serious heat compared to smaller stock iron manifolds. Heat kills HP no one can argue that.
Have you ever see guys at the track pushing cars with the motor off and with the hoods up?
it's because a heat soaked engine is a slow engine, period.
If I didn't have the cash for coating,
I would simply put off installing them until I did, Dead serious!
It's only $300- $350 more to get them coated, and they will still look like new 10 years from now instead of like rusty shyte after 10 months.
To answer your other questions, it took two of us 5 hours to install shorty JBA's the first time, cut it down to just under 4 hours on the second install.
...and no a Bully Dog is not going to help you,
LT's should really be custom tuned to get the full HP/TQ benefits.
No Coating and no Tuning...you would have been better off with shorties
Why spend that kind of Ca$h on LT's only to piss away 20HP ???
...sorry if that sounds harsh,
I just hate seeing HP going down the drain needlessly.