Jimmy P

iTrader: (177)

https://ls1tech.com/forums/parts-cla...rings-new.html

Someone in the classifieds is selling brand new in box LS6 valve springs for $50..get them lol

kdavis

iTrader: (14)

I made 325hp with ls6 heads/cam/intake before the dyne tune. Final numbers were 354/342. Ran an 11.9@113. Here is the dyne sheet

redbird555

iTrader: (14)

^^^Did you have the converter in there at the time? That seems a little bit low for a full bolt on a4 ls6 even with a stall. Did the car have lt's or any other mods done?

kdavis

iTrader: (14)

I had the usual bolt ons
Most free mods
slp lid
pacesetter 1 3/4 longtubes
3 inch custom orY
3 inch to the axel and a cutout
egr/air deleted
msd wires
circle d 4C stall converter

NemeSS

iTrader: (127)

WTF cobalt

fireburr

iTrader: (3)

I found out I already have springs on it from a 650 lift cam. Has anybody else had a magnaflow muffler on and feel that it was holding back lots of power?

Black99TransAm

iTrader: (16)

i have a magnaflow catback and full bolt ons. made 342 rwhp on a stock heads, stock cam, stock bottom end ls1

s346k

iTrader: (4)

this is not necessarily true. you can pull the stock cam to the limiter, but it will be slower than shifting it at say...5500. maximizing acceleration involves more than spinning the engine to the moon. finding the shiftpoint(s) that provide the most average power between shifts will make the car the fastest, not revving it to the limiter every time.
so removing 4* of ADVANCE from a 230 dur cam is going to bump the PEAK 400rpm? highly doubt it. **** man, on these crossover intakes, even the trex doesn't peak much past 6500...oh wait, it must be because of the ground in advance....

HioSSilver

iTrader: (8)

true....but only if your overevving.....and I'm not talking about that. But I'm not gonna shortshift it either. 200-300 past peak is usally fast becuase that's the most avg hp the engine can generate. My crate ls6 mad peak @ 6400 and carried that till almost 6700.