heads/cam question

**LETHALxLS1** · 06-03-2007, 11:29 PM

Hi I have a 98z28 with 69,000 miles on it. My question is would it be ok to put a aftermarket heads / cam pakage on it with that many miles? It also has some piston slap until it warms up a bit. It runs strong though. I was planning on going with a Texas speed "magic stick 3" cam package 112 lsa with Precision Race Components stg 2.5- 5.3 heads, ported ls6 oil pump, double timing chain, TS-hardened chrommoly pushrods. Do you guys think this is a decent set up?

**mrr23** · 06-04-2007, 02:31 PM

sounds pretty good. make sure the heads you get are for 97-98 perimeter bolt. if you get the center bolt design, you'll have to swap valve covers and coil packs.

**LETHALxLS1** · 06-04-2007, 02:34 PM

Do you think 69,000 miles is too many miles to do this to the motor? Also thanks for the advice I didnt think of the bolt pattern on the 97-98 differing from the 99-2002

**mrr23** · 06-04-2007, 02:34 PM

nope

**LETHALxLS1** · 06-04-2007, 02:38 PM

Cool!!! You just made my day!!!

**mrr23** · 06-04-2007, 02:41 PM

i tend to do that.

**LETHALxLS1** · 06-04-2007, 02:42 PM

LOL-been on pins and needles waiting to find out if my car had too many miles to fool with it. Thanks bud!

**MLavigne Z/28** · 06-04-2007, 03:13 PM

My Z has 160,000 miles and I just installed a TSP package with the Torquer v.2 cam, 5.3L Stage 2.5 heads and couldn't be happier.

**john5632** · 06-04-2007, 03:32 PM

Just put on TSP heads.Im at 71000 miles

**LETHALxLS1** · 06-04-2007, 04:29 PM

Originally Posted by MLavigne Z/28

My Z has 160,000 miles and I just installed a TSP package with the Torquer v.2 cam, 5.3L Stage 2.5 heads and couldn't be happier.

How much hp do you think you gained? Thanks

**MLavigne Z/28** · 06-05-2007, 03:55 PM

Not going to try and guess. It doesn't really come alive until 3000 rpm, but then look out. I am waiting on a new radiator and a/c coolant lines, then I am going to go to Thunder Racing for a tune. Also, the valvetrain is louder, I do have some ticking.

I think I am going to check to o-ring on the pickup tube this weekend and replace with a new one. Didn't realize until after I had it back together that I should have replaced it.

I will post up some numbers after the tune. Hopefully, I can get it done next week.