RJW

not a vette question, but perhaps you can help?

my son has a 2015 Silverado gen 5 lt1 5.3L 6 speed auto ( bone stock except for k&n filter)

2.9L whipple going on it soon

what is the max power that this combo can make before it runs out of fuel or blows the bottom end up?

thx

T/A KID

Same HPFP as the lt1 but smaller injectors... Probably 540rwhp

Seen your post on hp tuners... Listen to them guys

RJW

any advice on trying to get there (540 rwhp) ? safely that is

whipple sent the wrong sc pulley....4.0" instead of 4.375" ( 450ish range rwhp) should I keep it? lol

thx

and I do listen, very carfully

T/A KID

4.0 will probably do another 2-3psi... I would get the exhaust breathing and then see where your at...

RJW

good advice for sure...can't get it in if you can't get it out

any thoughts/recommendations on headers, etc for this ??

also, would you know the diameter of the crank pulley?

thx

joemosfet

Isn't the 5.3L direct injection Gen5 an L83 not LT1?

RJW

looks to be the case....L83 or Ecotec3

thx