I have a stock 94 Z28 with 104K miles on it. Its a daily driver but Im looking to make it fast. I know what to do about the exhaust and headers, etc...But im thinking of changing the pistons, rods, and heads. Im curious if anyone can help me with pretty much rebuilding my engine. Like steps or ideas to make my engine last and handle the modified parts that will be put on. Im planning on putting a Pro Charger on there. If anyone can help, id apprieciate it!

Thanks,
Jack

 

Buy a fast engine. JMHO

 

You can pic up a 425 hp long block for around 5 grand. Compare that with a complete rebuild plus a SC. JMHO

 

threres still alot of life left in her...just cause 100000 area doesnt mean you cant do alot... mines bout the same mileage as yours and she just put down almost 300 horse plus im still spraying her too

 

104k != high mileage.

Mine's got 151k and I'm just now camming it and retiring it from DD (Will only be DD from May-August)

 

my oil pump went out at 112XXX miles

 

Would it be good for the engine by changing the pistons and rods?

 

100k and then I camed mine...

 

yes, and new oil pump while you are down there

 

As long as she isnt burning oil/coolant. Run that bitch hard! LT1's can take the abuse...let her rip.

 

All depends on how the motor has been treated.
104K isn't really all that bad, probably wouldn't push my luck with a huge N20, FI or extreme quench setup
but unless it's burning oil or failing a compression or leak-down test it's probably going to do just fine
for a decent ~400rwhp build.

If you want to build something more extreme, you may want to consider some internal upgrades.
At the very least, forged pistons, new rings, new bolts and new bearings.

With a Procharger, anything bigger than a 6-8psi pulley is probably going to require dished pistons and/or larger chambered heads.
A blower cam would probably not be a bad idea either.

Best lubricated part of the motor LOL

But yes, it's cheap insurance to replace that thing while the motor is apart.
Be sure to prime it before putting the manifold back on.

 

thanks...I will probably do just that. Im looking at getting some AFR heads for it. I think once I get the Pro Charger on there, Ill be done.

 

Yeah, you might want to poke around and see what Procharger recommends.
Those guys are generally pretty helpful.

Actually, I know a local guy who's selling an LT1 Procharger setup at a decent price.
Levi's a sharp guy and very **** retentive when it comes to keeping things clean and maintained.
I've taken a ride in his car, it was a blast @ 14psi. I almost bought the kit from him.
In retrospect, I kinda wish I had, but it's too late to go back now.
http://mofbody.com/forums/viewtopic....hlight=#494399

 

Ok thanks...When you said getting 400rwhp with my 104K mileage...How would you go about doing that without putting a pro charger on there? Im not good with engines and workin on cars. Im trying to learn as much as I can. Any books you recommend?

I just wanna get most of what I pay for you know?

 

Best bang for your buck is probably a H/C kit, will put 400 to the wheels.
That project is getting quite common for LT1 guys, at least moreso than it used to be.

N20 will do it even cheaper, but you have to keep filling the bottle LOL