Thenextlevel

I recently picked up a new to me 95 Z/28. I have paperwork for some modifications done to the engine and I was curious if anyone here can give me a rough estimate for how much power the car is making. I don't have access to a dyno and my seat of the pants estimate is really inaccurate because I have never owned anything like this car. Here is what has been done to the car

Comp Cams 7200 Cam duration 224 intake 230 exhaust
Comp Cam Valve Springs
Comp Cam Valve Spring Retainers
Engine Works Rocker Arms
Comp Cams Hydraulic Rollers
Comp Cams Valve Locks
Comp Cams Teflon Valve Seats
Hi Volume Oil Pump
Accell Distributor
Polished Crank
Milled Block and heads
Long tube headers w/flowmaster muffler
gutted cat
Moroso CAI

Can anybody give me a rough idea?

bufmatmuslepants

iTrader: (3)

First off get that chokemaster muffler, then 340 for an m6, or 320 for a4, IFF it's tuned.

93M6Formula

I'd maybe bank on 330 or so. That's with a lot of variables left on the table...
Also, don't be surprised when that junk Accel Opti craps out on you.

bufmatmuslepants

iTrader: (3)

Why would you have a gutted cat with long tubes? Most y pipes for long tubes don't even have a provision for a cat.

96z28_lt1

iTrader: (3)

summit selling some good optis for 199.50 right now, stock up haha

i agree around 330 if tuned properly, could be more could be less there is always several factors that goes into this, take it to the track and see what it runs

Thenextlevel

Thanks for all the replies. I am assuming the cat is gutted, it has a cat on it. The car is already ungodly loud as it is with the flowmaster muffler, would replacing it make a little less loud? I am good with a 300-340 horsepower car, that is plenty of power for the street, at least it is for me

93M6Formula

A flowmaster is one of the quietest mufflers for these as well as the shittiest... If you think thats too loud, you'll hate anything else. The hooker catback for LT1s sounds really good on these.

bufmatmuslepants

iTrader: (3)

Magnaflow is quiet at idle, loud when floored, and flows great.

Ed Wright

iTrader: (1)

Can't believe anybody would put a high volume oil pump in a SBC.
Inside your valve covers likely won't rust. LOL
If you ever have the pan off, throw that damn thing away.

Thenextlevel

Someone before me spent a bunch if money on this car. To be honest I was looking for one that was stock and relatively unmolested but this one was the right price and miles.

F0x Slaughter

What Ed is saying is the high volume oil pump will suck the pan dry before the oil will make it back into the pan. Which will cause oiling problems.

So unless you have a larger oil pan, its a bad idea to have a HV pump.

bufmatmuslepants

iTrader: (3)

Does it actually sound like it has a cam? Another guy on here recently bought a "heads/cam" Camaro and he pulled the intake and they were stock heads. If its tuned its a nice catalog build. Been done many times. If its not tuned pcm4less or Ed wright or trifecta probably has a tune for you.

Thenextlevel

You can hear the cam. It has had the PCM reflashed before but I don't know to what specs or was done