is this possible?

[Aurora40]

Originally Posted by Pete

Most assume there's only 5-10hp to be had from cam timing to my suprise there is 20-30RWHP just from cam timing.

What exactly is involved in doing this? I.e. where are the variables to be aware of when installing or timing the cams? And do you have any suggestions as to when it might be appropriate to try and when it might not be worth cracking the motor?

In regards to your initial statement Sam (or the one Keith initially posted from you), it does seem a little bit backwards. You are saying the engine is too complicated to get into any internal stuff, that you suggest just sticking with the exhaust mods/bolt ons and leave it at that. But you are also saying cam timing is where the power difference comes from. I would think for most of us, it is a lot less complicated and there's less risk of messing something up in removing the plenum and IH's and having work done to it, than in removing the cam covers and messing around under there.

Most of us have to take the intake off now and then anyway just for maintenance of things like plug wires or fixing vacuum leaks and whatnot. But this cam timing thing is certainly intriguing.

[Pete]

Originally Posted by Aurora40

What exactly is involved in doing this? I.e. where are the variables to be aware of when installing or timing the cams? And do you have any suggestions as to when it might be appropriate to try and when it might not be worth cracking the motor?

First let me say that the MPH on 8388's car shows around 400RWHP +- dyno's are a tuning device some might show more some less.

Some later ZR1's make 350-360 RWHP stock with the right cam timing
add another 30RWHP and your close to the 400rwhp or 119mph.

My opinion,the best time to do the cam timing is,when you do heads and intake porting.

In the last few months i have reseached and tried different cam timing and to my suprise what the experts have been saying is all wrong the LT5 also suprised me how it doesn't react like a 2 valve motor with cam timing.
I'm still in the middle of trying different cam timing,i will have more input on this by next week.
I might have to retract about the bigger intake cams not making power,at this time the bigger intake cams seem to be worth about 25-30 RWHP.
Like i said i will have more info about the stock cams and bigger intake cams.

Todd Pepmeiyer(sp), DO NOT i repeat DO NOT install the big intake cams or for that fact stock cams at the specs you emailed me a while back the one Crower recommented unless your looking to loose power,i tried it.
I don't have your email i changed my PC since then.
Todd,e mail me.
Most think of the LT5 like a 2 valve motor in some ways it's right but at the most part it's wrong.

If i came on here posting that my 350ci LT5 makes 470-480rwhp or runs 125MPH would anybody believe me? NO,and i think we would have the same arguement.

My goal to be the first to run 10's N/A 350ci LT5 6spd,with A/C on
Peace
Pete

[jonszr1]

pete , maybe i can. clear this up a little . i just wanted to see the supporting dyno sheet so i could see where the extra power and tq was made. I went through the same thing not too long ago when I came back from Coreys' and reported 409.9 rwhp and 373.7 tq . Since I did not have the ability to scan my dyno sheet . mailed copyies to those that wanted them as welll as Coreys' ph . so people could see I was not blowing bs. we all would like to find the majic carrot for that 30 extra hp. I for one applaud your efforts to seek the 10s with a stk displacement lt5 . I know you would be proud to supply the supporting data thats part of the fun of seeking to do something that hasn't been done before . maybe I am alittle sensitive because of how i got raked over the coals with my numbers with my mods ( headers flowmaster ex portrd inj and plenum and new prom.) then someone claims to have this with a totally stk car cats and all. and making the same power as my car with mods . i thought i asked nicely just to see the dyno sheet for fun and the ensuing melee was sad . Bob hall allways said I was from the show me state . hope this helps you to see from my point of view for what its worth . id love to talk about some exhaust ideas I have . pm me if its ok to get ahold of you on this subject.

[Pete]

Originally Posted by jonszr1

pete , maybe i can. clear this up a little . i just wanted to see the supporting dyno sheet so i could see where the extra power and tq was made. I went through the same thing not too long ago when I came back from Coreys' and reported 409.9 rwhp and 373.7 tq . Since I did not have the ability to scan my dyno sheet . mailed copyies to those that wanted them as welll as Coreys' ph . so people could see I was not blowing bs. we all would like to find the majic carrot for that 30 extra hp. I for one applaud your efforts to seek the 10s with a stk displacement lt5 . I know you would be proud to supply the supporting data thats part of the fun of seeking to do something that hasn't been done before . maybe I am alittle sensitive because of how i got raked over the coals with my numbers with my mods ( headers flowmaster ex portrd inj and plenum and new prom.) then someone claims to have this with a totally stk car cats and all. and making the same power as my car with mods . i thought i asked nicely just to see the dyno sheet for fun and the ensuing melee was sad . Bob hall allways said I was from the show me state . hope this helps you to see from my point of view for what its worth . id love to talk about some exhaust ideas I have . pm me if its ok to get ahold of you on this subject.

Jon,i had no issues with these postings and shouldn't have been any flames about you asking for a dyno sheet maybe it was the way it was asked and some name calling didn't help, 8388 has been around for a while is good people and if he is lying he is only lying to himself.
If you ever take your Z to the track compare your MPH with his they should be withen 1-2mph depending on altitude and day.

You think you got flak for posting your HP #'s do you know what i went thru when i made 438RWHP and my Z was running mid 11's @ 123+MPH
and this was 5 years ago when no tuners have ever seen these kind of #'s from a 350 and i had dyno sheets,track videos and timeslips.
And now 450RWHP and moving on.

Now i don't care if anybody believes me or not i go to the track and enjoy my Z.

You can PM/email me anytime.

Pete