Short block redline
Thread Starter
On The Tree
Joined: Jul 2004
Posts: 148
Likes: 1
From: St. Louis
Short block redline I am contemplating using a built LS1 in a hybrid application and had a few questions. I was wondering what the RPM limitation of the LS1 was. Is it mostly in the valve train or does the lower end need to be beefed up to turn more RPM. Would a head and cam swap with some intake upgrades get me some more revolutions? The body it's going into is old enough that emissions is not a concern so figure on pretty much open exhaust, headers, 3" pipe race mufflers.
Thanks in advance. This is one of the best boards I belong to.
Jon
Thanks in advance. This is one of the best boards I belong to.
Jon
It's both. Rod bolts are a key action item (crank is fine) and valvetrain weight would also help keep rotating mass in check. Stock bottom modified top though peeps are spinning to 6500+ no problem it seems i.e. with large lsa cams like the ls6 which doesn't serve up any power real low.
Thread Starter
On The Tree
Joined: Jul 2004
Posts: 148
Likes: 1
From: St. Louis
I've been reading about swapping rod bolts but some people seem to think that new rod bolts affect clamping, not really sure what, but some sort of distorsion of the circle, anybody ever run into an actual problem with this?
Before I drop the engine in, I'd like at address as many issues as possible without spending a fortune. The car I'm swapping into is going to be super light, so power shouldn't be an issue, I'd just like something reliable.
What sort of valve train mods will help out? Besides a head cam swap.
Before I drop the engine in, I'd like at address as many issues as possible without spending a fortune. The car I'm swapping into is going to be super light, so power shouldn't be an issue, I'd just like something reliable.
What sort of valve train mods will help out? Besides a head cam swap.
FormerVendor
Joined: Nov 2001
Posts: 3,065
Likes: 6
From: Houston, Tx.
Originally Posted by cooks 7
I am contemplating using a built LS1 in a hybrid application and had a few questions. I was wondering what the RPM limitation of the LS1 was. Is it mostly in the valve train or does the lower end need to be beefed up to turn more RPM. Would a head and cam swap with some intake upgrades get me some more revolutions? The body it's going into is old enough that emissions is not a concern so figure on pretty much open exhaust, headers, 3" pipe race mufflers.
Thanks in advance. This is one of the best boards I belong to.
Jon
Thanks in advance. This is one of the best boards I belong to.
Jon
Basically the LS1 shreds and foams the oil as it trys to return to the pan. All the oil drainback from the top of the engine on the LS1 is right on top of the spinning crank therefore the oil gets aerated big time and needs time to settle and let the bubbles go to the top so the pump pickup gets LIQUID oil otherwise you are pumping air which isn't a real good lubricant I've heard!
