EcotecFiero

Whats the highest you tuned guys have taken the bottom end too? Is it much more than stock?

huckernage

7300

EcotecFiero

Is that your personal highest or what typically people take it too?

mmcgee123

iTrader: (1)

Until it breaks

huckernage

it between 7000 for a auto to 7300 for manuel.

jboogie

iTrader: (3)

I'm sure the bottom end can rev pretty damn high. It's the valve train you have to worry about.

EcotecFiero

I know the bottom end is strong but I just hadn't seen what anyone actually has taken it up to. I will probably need to do at least 7500 and probably do 7900 but it would make me feel better if someone else has done it lol

ctg5040

Pretty sure 7500 is pushing it for max springs if i remember correctly. Just off the top of my head i think 7400 and 7500 is where valve float starts.

kxrida2000

iTrader: (12)

May I ask why u are looking to Rev to nearly 8k in a stock le5???

EcotecFiero

Well its not a need, its just going to happen, I just wanted to know if anyone else (with the necessary upgrades) has been in that same are of RPMs.

Acey

iTrader: (3)

What the hell are you doing to your motor that it is "going to happen"? This will not end well.

hotpursuit

iTrader: (1)

i CAN rev to 7300 rpm on stock valve train. no need to rev higher as even a tuned le5 stops making power around the mid to high 6000rpm range.

although i must say with my lastest tune i keep making power till 6900-7100 rpm

i wouldnt push it much farther than 7300 occasionaly, (if i miss the shift from 1st to 2nd is usually only time i see 7300)

EcotecFiero

Im not using stock cams and the valvetrain can handle it, however with the r/s ratio the LE5 has I was just interesting with how high these things can handle up too.

hotpursuit

iTrader: (1)

ah, gotcha. well youd be the first to find out really. i figure same as an l61 seein' as the bottom ends are the same.

what cams are you using?!?

EcotecFiero

I didnt tell you?

hotpursuit

iTrader: (1)

no i wish for you to though

kxrida2000

iTrader: (12)

Ya we will see if ur valve springs hold up to 8k rpm haha probly not

hotpursuit

iTrader: (1)

i wouldnt talk, your running ZZP springs.., ive sesen 2 cases on l61 were they snap. my buddy snapped one on his stage 1 comp camed l61 luckily he didnt drop a valve. and ive seen another guy on the www.j-body.org break one too

EcotecFiero

Hopefully my Ferrea valve springs hold up a bit better than those . Id be really bummed to have those go!

kxrida2000

iTrader: (12)

I was under the impression that you ha stock springs all
U said was that u had different cams

elecblue06

iTrader: (1)

sooo you've heard of 2 people that had issues .. and you assume their all crap

wtf is with this board lately

kxrida2000

iTrader: (12)

Well either way plz tell me how revving and engine to 8k will do anything beside losing power no powerband from any Cam on these cars is good to 8k

hotpursuit

iTrader: (1)

im not assuming, but when i valve spring lets go taking of slowly from a stop light.., something is fishy.., he replaced the spring and hasnt had any issues, but id still rather a brand such as super tech.

and ecotecfiero, if you dont want to say what cams your running on the forum, could you PM me? im really interested.

this i already knew, i already said no point in reving past 7300..,

elecblue06

iTrader: (1)

could be installer error or manufacturers defect.. you install top side or take off head.. there are alot of factors

hotpursuit

iTrader: (1)

i can only say my friend is a class A mechanic he knows his ****. they installed from up top using compressed air. and zzp made him pay for the replacement spring.

either way just saying that ive seen em break. and you never see supertech or others break. (that ive heard of)