GrannySShifting

iTrader: (10)

Just want to see who all out there is doing it. Have a couple up there and one that runs clean to 7700 rpm, makes great power doing so, but some crankcase/windage issues seem to be cropping up

orangeapeel

iTrader: (18)

ttt

Randy WS6

iTrader: (69)

I've cranked 7800 rpm with my T-Rex ,with no problems at all for the past three years now

Reckless

iTrader: (9)

Mike Brown runs his up to at least 7800 every time he races it.

https://ls1tech.com/forums/forced-induction/581911-new-best.html

ATVracr

iTrader: (5)

Cool but that doesnt help us with the problem

SideStep

I was running to 7500 for about 4 months when I had my 232/236 XE-R cam....

Xtnct00WS6

iTrader: (8)

Just curious what kind of crankcase/windage issues you're having?

SideStep

... well, none that I noticed... lol

tim99ws6

iTrader: (31)

Granny-you should speak with LS1Joe. He races at least once a week, and last i heard, he was launching at 7800, and shifting at 7600. I believe he is running through the traps at around 7800-7900.......











O yea, did i mention that was on the stock bottom end?! hahaha.

ArcticZ28

iTrader: (14)

7400 is where my power starts to kick in with stock gears.

ATVracr

iTrader: (5)

Pushing oil out of the filter in the oil fill.

no PCV set up on car.

Cop Car

iTrader: (14)

there was a kid around here that had his limter set at 8100.. and it was in a 98 car.. with a cam and bottle.. needless to say he spun a bearing haha, it lasted for a couple years though..

kossuth

iTrader: (12)

You're pushing oil out of the filler hole in the valve cover? Doesn't sound to me like a windage problem as much as it does a drainback problem in the cylinder heads if I'm understanding you correctly.

JL ws-6

iTrader: (50)

my limiter is set to 7600.. hydraulic cammed 402.

ls1408cp

iTrader: (37)

so is it normal to have a hyd. 408 spin past 7000-7200. I hope mine does or else I will need a gear change when i start spraying hard.

JL ws-6

iTrader: (50)

Not sure how normal it is, but there's alot of people that do. Personally I'm gonna set my shift light at 6800, figuring that I'll pull the lever at about 7000, I'm sure that it will be in the 7000+ range going thru the traps... we shall see soon enough.

ATVracr

iTrader: (5)

Sounded like a crankcase pressure problem to me

kossuth

iTrader: (12)

If it were a pressure problem I'm attempting to understand how oil can get pushed up and out when the air in the engine is actually a less dense material than oil and it would get pushed out first by all the laws of physics that I know. I would tend to think it's a drainback issue. I know Jeff uses different pushrods, I'm curious as to how large the oiling holes are in them. Perhaps it might be associated with the size of the oiling hole :dunno: I would also tend to think that if you were having a problem with windage you are foaming up the oil in the crankcase and potentially doing damage to the bottom end. I seriously doubt this is the case because you would see a drop in oil pressure when it occurs ect ect. Just food for thought.

PS thought about adding this, what do your blowby numbers look like if you've done a leakdown test while the engine is warm???

GrannySShifting

iTrader: (10)

Why? Was it making power up there? With that small of a head and camshaft id think it would be all out of steam 500 rpm or more before that. They sound mean buzzing though dont they!

GrannySShifting

iTrader: (10)

I expect it to leak a bit maybe have to ask Eric on that one as loose as its ringed. Im temtped to hook up my pressure sensor to the crankcase and monitor that actual pressures inside under load. Im worried about it aerating the oil, maybe make a pull than drain ot and see if it looks like the foam mess