Hi . I have a 502 efi flat tappet and want to go hydrolic roller kit . But need to be exact same spec. So no need to retuned ecu . Only #on actual camshaft is 89594 and 6209

thanks

what year / Gen is the engine........mefi what

mefi 1. Engine is procharger just got a tuned from Tyler Crocket. Thats why i want to keep same spec .

You want to spend like $2k for no real performance increase?? Why???
Just because the lift/duration numbers are the same doesn't make the cams the same. You should call Tyler Crocket

long story short. Went for à tuned 3 week ago. Made 635 hp 722 tq . Everything was perfect . Went back home Québec. Put engine in boat went for à first ride everyting was ok didn't go over 3000 rpm ( wife was there doesn't like speeding ) couple day later went back alone. Try real pull engine wouldnt go over 4600rpm whit à weird noise . It's was a #3 intake lifter ( flat tappet engine )eating it self aswell as the cam . Engine is apart . I already talk whit Tyler . He told me you change the cam you change the tuned. And need to be hydrolic roller . This is why im asking this question . Other option is to leave it flat tappet whit same cam ( new ) , but whit waht happen im not really sure ... what would you do ?? If cam spec are not the same I need to retuned ecu that meen money I already put on tuned and travel to Michigan goes to garbage.

Any pictures of the bad lifter? A failure that early would make me think something happened during the break in. What brand lifters did you use?

I cant send picture till I have 10 post .... I can send you a pic via émail or something ?!? As for the lifter brand i will get this info as soon as machine shop open . Engine already as 60 hour on it before installing procharger.

So the engine was not refreshed when the pro charger was installed? You added the pro charger to a good working engine, and then the lifter failed?

Exactly

Is it a stock 502? To get those power numbers out of a stock 502 I would think you need quite a bit of boost