tehmilz

i have a 1996 lt1 trans am 6 speed car. factory rear end. i just rebuilt the engine to a 355. i had the heads port and polished, bbk shorty headers, cats hollowed out and a dynamax bullet dumped before rear end. also has an ls1 slp lid on it "car has ls1 front end" and an msd coil pack, car also has a cam specs 226/234 it is an erson cam. stock bottom end. what kind of numbers will i be looking at to rear wheels after a tune?

SpeedDensityZ

iTrader: (5)

355/330 I think depending on the rest of the specs for the cam and heads. How can it be stock bottom end and a 355?

RamAir95TA

iTrader: (2)

Probably stock crank and rods with .030" pistons.

Wicked94Z

iTrader: (26)

since you had the heads polished and not just ported, plus the ls1 lid, and hollowed out cat... probably 420rwhp. All those little tricks add up big time

draggin97s10

iTrader: (2)

polished is such a fast and the furious term. oh help us jesus, on a serious note. i could see it doing 360ish with a dead nuts tune

tehmilz

that is correct.

RogueLT1

iTrader: (2)

I'd have to agree here. 360ish probably pretty close. Those little add-ons do a lot, but probably not enough to get it into the upper 300's.

Did you swap it to the ls1 front end or was it already done when you got the car?

96capricemgr

iTrader: (1)

Ported heads can mean anything from completely screwed up to capable of over 500rwhp with a good solid roller or anything in between. There can be a HUGE difference from one porter to the next or in the case of some porters one set of heads to the next.

Did you use old school pistons with a crappy thick ring pack and practically made of lead or did you use a nice piston?

tehmilz

the front end was already swapped when i got the car.

LeonbergerG

iTrader: (2)

I just rebuilt my motor too with trw pistons. Got a great deal on them. Just sbc pistons. Forged with a 125 cc dome. Should be about 11.75:1 compression

RamAir95TA

iTrader: (2)

125cc dome LOL.

SS RRR

iTrader: (2)

Follow I do not. Hmmmm.

LeonbergerG

iTrader: (2)

What's wrong with That? Might not be 125cc supposed to be 11.5:1 in a 64cc chamber.

RamAir95TA

iTrader: (2)

Show me a piston that has a 125cc dome. You obviously have a typo or some BAD info. That's a 7 1/2"^3 dome. About the size of a pack of cigarettes, per piston.

LeonbergerG

iTrader: (2)

Then hows a dome on a piston measured??

RamAir95TA

iTrader: (2)

There are three main types of pistons - dished, flat-top and domed. A dished piston has a type of "dish" in the top of it. A flat-top is obviously flat, while a domed piston has (go figure) a dome shape to it in order to increase compression (but also reduced flame travel).

That's the short version. Where are you getting 125cc?

LeonbergerG

iTrader: (2)

Well no ****...my girlfriend knows the difference in the shape of a piston... but not all domes are the same. Duh. So how big is the dome what is the measuremnt used for it?? Like a head has 64cc chambers what would a dome be measured with??

RamAir95TA

iTrader: (2)

Why would you want to run a domed piston in the first place?

EDIT: Quick, edit your post and add an insult.

RamAir95TA

iTrader: (2)

Dome volume is measured in CC.

LeonbergerG

iTrader: (2)

More compression. Don't you want yo have a bigger dick?? Compression makes HP with the right set up