the how much power should this make thread certainly went astray in diffrent directions, as i was one of them with the hpp3 talk. did not mean to hijack thread guess i just focused on one debatable mod, and was about to post on the said mods asked about on said vehicle of original post then it got locked.
then it took off with the hp ratings of the stock ls1, this sounds intresting anybody care to continue (in a friendly manner)
lot of the ls1 tech, is stuff thats been out for years but still debated cause theres numbers out there for example on cam specs that some one reports and another source reports numbers that are off by a bit, whos right whos wrong? i guess most pppl go by the reputation of the person or shop of company psoting ls1 specs.

i do agree, that the fbody ls1 advertised hp/tq numbers were underrated as to not have the fbody numbers the same as the ybody since the corvette is chevys top end sports car over the camaro. the corvette was putting more power down due to low restiction intake,exhaust, and pcm tune, better springs to give it a bit more on the redline, and cams every 2 years they would have diff specs on f and y bodys. but when your talking just the engine it self? they are the same. when all was said and done when you put a corvette on a chassis dyno it was puting more power to the wheels then the fbodys due to the better intake path, and better exhaust path (ybodys have dual exhaust all the way back vs the 2 to 1 fbodys exhaust path) on the track a BASE LS1 corvette was not much faster then the fbody .1 to .3 tenth . and if the driver of the vette did not know how to drive it then the fbody could take it, unless gmhtp/mmff editor jim campissano got behind the wheel.
take my ls1, a freak of nature the numbers its putting at the track are those seen on a stock ls1 with a six speed with 3.42 rear end, not a stock ls1 with a automatic tranny with a 2.73 highway rear end. does that mean im a good driver squezzing everybit of juice from the ls1 to the wheels, or am i a soso driver with a freak ls1 making more power than it should.

anybody want to debate this and throw some numbers or accounts around?

The definitive list of LS1 Cams

Intake/Exhaust Duration, I/E Lift, Lobe Seperation Angle

`97-99 Corvette
199/207 .472/.479 117 LSA

`00 Corvette
198/209 .500/.500 115.5 LSA (cam was changed to bring back lost power from the additon of 2 extra pup convertors in the exhaust)

`98-00 F-body
198/209 .500/.500 119.5 LSA (Only cars to use an EGR valve because of the wide LSA)

`01-04 LS1 (All cars F body Y body and GTO)
196/207 .467/.479 116 LSA **

** Exact same cam as used in LQ4 and LQ9 6.0 Truck and SUV engines

The less aggressive Cam in the later cars was used to offset the additional airflow of the LS6 intake manifold.
Note) Adding an LS6 manifold to a `97-`00 LS1 will gain approx 10-15 FWHP.
^^^^^
These are the Factory cams as installed in the cars new and are the only true internal differences between `97-04 LS1 engines
Heres a few extra's to aid in the discussion (All GM cams)

LS6 2001 and LS2 2005-08
207/217 .525/.525 116 LSA

LS6 2002-04
204/218 .555/.551 117.5 LSA

LS1 Hotcam
219/228 .525/.525 112 LSA

ASA Cam
226/236 .525/.525 110 LSA

Grand Am Cup Cam
239/251 .570/.570 106.5 LSA

I've owned my LS1 for 11 years and while I will not claim to be an expert I still know more then most.
Personally I never seen one dyno less then 280 HP at the wheels but also seen them dyno 322 HP at the wheels stock.
Yes we all knowe dyno's aren't all created equal and I agree that they are tools for tuning and nothing more.
Be that as it may I consider mine an average LS car, so heres my numbers.
Dynoed Spring `06 on a Dynapack Dyno
Car is a `98 LS1 M6 3.42 gears 109K miles (at the time) Original Clutch only mods were an SLP Lid and Choke Master SOTL Catback.
300 RWHP @ 5400 rpm
322 RWTQ @ 4200 rpm

Whats impressive is the torque curve is above 300 ft lbs from 3000 rpm to 5250 rpm.

see the early ls1 cam numbers you posted are what iv seen to but the later ls1 cam numbers are what iv seen diffrent specs, not saying your wrong just the amount of info out there. iv got the same later ls1 cam number you posted but iv seen other sites or mags post slightly high duration numbers. cant remember right now ill get them tomorow and post a couple of them, but there slightly off by like one or two degree not anything big.
98 with 109 miles with lid and catback which are minor mods in the horsepower producing department dynoed 300hp. 5 hp way from the factory rating(factory rating being the fly wheel) chalk one up for the underrated dept. did you see good e.t/ mph/ 60ft improvments when you added the mods from stock?

I've seen dfferent duration and lift numbers aswell but most I atribute to typo errors.
In general there isn't enough of a difference in the cams to amount to any significant HP or TQ advantage.
The tighter lobe spread cams will show a slight increase in peak TQ but in general GM used this to eliminate the EGR valves that were used on the earlier engines.

Back in `99 I took the car to the track and ran 3 successive laps on a 95* day
13.76 13.84 13.71 all at 107 mph.
launches were varied from 2200 on the first run to 2800 on the last. Car was stock and I was also a new at going to the track.
Being that this is my DD I've never brutalized the clutch on launches so I know there is alot more in the car.
Best run to date is 13.57 @ 105. car was running on bent pushrods and a partially stuck thermostate. and that was almost 5 yrs ago.

Car currently sits at 132K miles, has 300 or so Street runs and over 30 track passes, and yes it's still running on the original clutch.

the cam numbers you posted are what i have and several reliable publications, but a download from a website called smokem up.com has a bunch of ls1 specs and has the early fbody cam listed as 496/496 202/210 dur 116 lsa, and another mag listed the later ls1 cam 467/479 197/207 dur. the first one is way off and the second one is off by one degre on the intake duration. i dont lose any sleep over this, just good info to know.

did you know that several lucky unsuspected 01-02 fbody recieved a ls6 blocks when the fbody was in its final run?

Yeah there was a shortage of regular LS1 Blocks at the engine plant and the LS6 Blocks were subsituted.
Funny thing is a lot of people think this is significant for some reason and others think it's a HP gain.
Their all wrong
It's common practice to swap on upgrade parts during production when the regular parts are not available.
They do this to keep the product flowing and because they can't install a down grade part.
Example
Back in the 60's and early 70's all 4sp equipped Mopars would get Dana 60's and Auto cars would get the 8 3/4 rear.
Well some Auto cars were given Dana's because of a shortage of the 8 3/4's.

and that is true its not significant or offer any hp. think the block designated for the ls6 has bigger bay to bay breathing holes and casted in mexico. but same spec as any 346 LS block, does not offer any hp.
the only thing it offers is a good conversation starter.
i got the ls6 block part number, ill post it when i get home if anybody wants to know it

we should put some of this info on a sticky.