USCG MK

I recently swapped out my stock cam for a comp cam and didn't notice the wear on the stock one until just now..

The new cam has been in and run for about 1,200 miles now.

I will be Buying a Forged Short Block in roughly a years time and will be going with a different cam when I do.

The car has 98,000 miles on it.

1999 C5 / 6 speed Manual
STS Twin turbo
Dual valve springs / hardened pushrods
60LB injectors
Racetronix fuel pump
Water / meth
Dual disc clutch.


I Did all the tuning on it using HP tuners.
With my stock cam and valve springs on 9psi the car made 580WHP / 641WTQ. (Mustang Dyno )

I'm just trying to have fun with it until I pull the trigger on the forged short block.

New cam specs are attached along with pictures of the wear on the stock one.

So what are your thoughts? Run it for the year or replace the lifters now? (remember, its already been run for about 1,200 miles with the new cam in it and the stock lifters that caused this wear still in the engine.) The only lobes damaged are the ones in the pictures, the rest all look good.




New Cam Spec's

Crank pulley side of stock cam

Rear of stock cam

Rkreigh

you need a new cam and lifters, don't reuse that cam or the lifters either.

stock cams and lifters are pretty cheap so I would make that cam into a lamp at this point.

USCG MK

If you read my first post. The new cam is already in and has about 1,200 miles on it now.

Only looking to run it for a year before going to a forged short block & new cam.

ascastil

It sucks you have to pull the heads but I'd be in the mindset that a year away of a new motor things come up that could delay the plan. What if its 2 years? I'd probably do new lifters.

StatmanRN

Your combo is very similar t to mine.

Was that power with the cam shown?

USCG MK

Dyno sheet attatched, I made 580whp 641wtq with that cam @ 9lbs of boost and only 10 degrees of timing. Made those numbers on a mustang dyno. (Was spraying a good bit of water meth for added safety)

I had no idea it was even damaged.
It was running strong when I pulled it.
That was on the stock cam (in the picture)

I'm just going to change the lifters and hope my new cam isint too chewed up.. going with a .060 head gasket to drop the compression some as well.

USCG MK

Swaped out the lifters, it must have been an imperfection in the casting when GM made the cam. All the stock lifters looked like new. No noticeable wear.

I decided to replace the knock sensors and harness while I was in there. Also went with a .060 head gasket to drop my compression a bit.

Hope to have it back together and test ran tonight.

If the knock is unchanged I think at this point all I can do is top off with some 112 to see if it goes away. If not, the sensors are getting desensitized a bit. I'm over this false knock BS

USCG MK

All is Good! 😁 no more knock! , left the tune unchanged and it ran pretty good. It must have been one of the lifters. I dialed in a rough ve table and once the wide open throttle AFR's were on point I added some timing back into it. She deffinetly picked up some power in boost from the new cam!

Thanks for the replys and opinions.
Feels good to have it up and running again.