rubbermanZ28

Im new to the board but i have been reading for about a year just been unable to post. Here is my question ive got a 1984 Z28 with a 350 and a TH350 tranny with B&M transpack(street or strip),headers,3" exhaust (soon to be true duels) 3.73 rears, edelbrock performer carb and intake, carb=600CFM,the 350 is from the late 70's, came from a Camaro, the cam is 1 step hotter than stock (i know i know) K&N air filter, open element, hammer shifter, i think thats it. People said ill be running 14's, i thought id be in the 13's for sure. This is my first rebuild, im 18 years old, and i live in Ohio, work at a radio station, im a HUGE muscle car guy ). Anyways, i heard LS1's run mid to low 13's stock, i want to be able to take them down in stock form, what would be the best, and most inexpensive ways i can do this. Thanks. BTW i dont want to use N20. Thanks

Mark A Shields

Pro Lightning heads, about $700-$800
Comp Cam, $270 for hydraulic lifters
around $400 maybe for a roller version (which I would recommend)

If you're running a stock stall get a higher stall one , that will be another $300 or so.

Ditch, the Performer intake for either the Performer RPM or a Weiand Stealth.

If you're running an edelcrap carb, ditch that as well for a Holley 650 DP, or a 750 VS.

If you get the roller cam you'll run 12s easy. IF you go for the hydraulic one, you can at least expect low 13s, maybe a high 12 with a high stall converter.

Either way, I'm sure those are crappy heads you have on it, then again if you're on a budget, you can check the casting #s, maybe they're decent and need some work done to them.

hope this has helped

oh, what headers do you have?

rubbermanZ28

First off i am on a budget, im 18 years old heheheh all my money, well the carb and intake will have to stay for a little while i just bought them LOL, the headers are cheap ones, flowtech i think, they were ike 130$ or so (i didnt have like 9080932840$ for good ones ) Will the set up i have seem REAL fast compared to a POS 85 T-bird with a 3.8, or a 2002 Durango 4.7 v8? oh ive been practicing on porting my own heads, but i want to do it flawlessly so i need to practice more, Thanks for replying so fast.

rubbermanZ28

BTW for a cam what kinda lift/duration should i look for? dont laugh but with calipers how can i tell if the numbers someone gives are correct? Thanks man

rubbermanZ28

those heads are for hydrolic cams i think is what it said. What would happen if i got them and used them right now, before i got a hydrolic cam? would it run like crap?

maroon91rs

an LS1 with a blower
oh yeah and good luck finding a STOCK LS1.anyone in their right mind wouldnt leave on stock for more than a week

z28monster

iTrader: (1)

ive got a wehin staelth intake on my car. are these good intakes and if yes what are they comparable to ive been told they are just a cheap intake and then ive been told they are realy good wich is it.

TexasLT1

hmmm......well my LT1/4 works pretty well at taking down LS1's


if thats not the understatement of the year. I've never found a single 100% stock LS1 to run. Every single one I've run as atleast had a cold air lid and exhaust of some sort.

rubbermanZ28

huh thats wierd, where i live central ohio, most boring place ever. My cousin has a 100% stock one, he doesnt have spare cash to throw at it atm, and i know a few others. What do they run stock? So can you guys give me some cam spec, lift,duration, and i was looking at roller rockers, what ration would i want? ty

IROCJTOWN

With a 6 speed a good driver can dip into the high 12s. They put down about 315 rwhp stock, depending on the year. Average times I have seen them run are mid 13s (13.4-13.5).

rubbermanZ28

the one i will be against is a 98 trans am. 100% stock.

Opha

i've seen mostly stock to near stock LS1's running at Norwalk ( ohio drag strip ) and most times around 13.8- 13.2's... some worked up ones too, but dont think many good drivers really.

3.8TransAM

I use a 350 TPI Formula

course it got ported vortec heads, runners, plenum, SLP headers and catback and lots of my time in prom tuning, but from a roll LS1's do get to see my taillites :-) Course i will eventualy line up on that mooded one and get it handed to me.... Then theres that silly hidden nitrous? would i do that? noooooooooo course not im a good boy :-)
Later
Jeremy

rubbermanZ28

FLYNLOW92rs

iTrader: (53)

What about the cars (corvette, firebird and camaro) that came with LS1 engines??

What do they weigh??

Dano 00TA

Nitrous??? Whats Nitrous???

TTA 1387

3.8 V6, say '89 vintage. Really don't have a problem with LS1's

ShiftyCapone

iTrader: (7)

Well unless you have TTA or a GN, which are the coolest, most underrated raw machines ever, you need serious mods to run with an LS1 car. They consistantly put down over 300hp to the wheels with the stock air filter and everything. Add a full exhaust on those cars and they put down close to 360 at the wheels. Just go over to LS1.com and read their "racing thread" and it will sicken you what they run with. They embarrase a lot of people on the road. My roomate has a 2002 SS with an air lid and factory center mount SLP exhaust and his car is unreal. The top end on his car can make you cry it feels so good. I have an LT1 and can get him off the line but he will pass me like I am standing still once we hit 50 or so. However, any good thirdgener will show you how it is possible to run and beat these cars very easily. Don't small blocks rule?

ArcticLS1

Mabey a crate motor would be the easiest, headache free route to run with LS1s... I had a 1991 L98 and got waxed by a 99 SS. I looked into what i would have to do to get it to run with the LS1s i wanted to beat which werent stock to begin with and as you can see, i just bought an LS1 car..... Cant beat em, join em.

paul_huryk

You will need to increase engine power and/or lower your car's weight to bring it more in line with the LS1 cars performance.

So that means 325hp+ and the ability to put it to the ground.

What you might consider doing:
Vortech heads
Mild cam with 1.6 rockers
Performer RPM intake
1-5/8" headers
3-1/2" cat-back (mufflex)
Drag radials

I thinking it would be able to make 350hp, maybe more. If your car weighs 3500lbs, it should be able to get into the 12's at 108-109mph, more than enough to play with the LS1s.

LowStyleII

Well I just bought me a 98 Z28 all stock for now. It has about 320 RWHP. My 92 RS just has too many parts going out for me to fix it up so I'm selling it. It was a good first car and its what got me hooked on Camaros but I look foward to staying on the board and helping with all the questions I can. By the way I have been gone in the Military for 7 months going to school and everything.

It would be nice to see thirdgens run that well. So keep up the good work.

Jer82Z28

My combo costed me about $3000 CDN and I beat stock LS1's fairly easily.
It's ALL about traction though.

3.73s w/ locker and complete rebuild $1000
vortec 350, stock rebuild, XE262 cam, performer rpm, headers and other misc stuff $2000-2200

Jer82Z28

oops. sig.

TSiAWD91

oh yeah and i forgot to mention one very magical number...
1hp per cubic inch in a lighter 3rd gen thats your goal right there to beat an LS1 f-bod or corvette

maroon91rs

oops that was me.made the name up whenthis wasnt working a few weeks back.you can delete that to whomever sees it with the power of post deletion