Rev limit?
Thread Starter
Supreme Member
iTrader: (1)
Joined: May 2001
Posts: 1,638
Likes: 0
From: Greenwood, Indiana
Car: 1984 Trans Am
Engine: Vortec 355
Transmission: TH-700R4
Axle/Gears: GM Axles and GM 3.73
Rev limit?
hey i gotta 1984 pontiac trans am with the L-69 305 HO
and i was wondering how high could i rev it like when im shifting and still not break anything?
and i was wondering how high could i rev it like when im shifting and still not break anything?
Moderator
Joined: Jan 2000
Posts: 19,651
Likes: 309
Matt,
Welcome aboard!
With a basically stock L69 in good condition you should be able to safely shift at 5,000 RPM, but the torque at that RPM will have fallen off to the point where you should have shifted long before that.
Considering the flare on shift and the factory cam and valve springs, their red-line of 5,200 RPM is pretty accurate for repeated use. You might be able to get away with a few excursions into higher RPM ranges, or you might send rods through the case at lower RPM. It is highly variable depending on the condition of the engine and load at a given RPM.
Its your engine, and you're driving....
------------------
Later,
Vader
------------------
"Fear is how I fall, Confusing what is real..."
Adobe Acrobat Reader
Welcome aboard!
With a basically stock L69 in good condition you should be able to safely shift at 5,000 RPM, but the torque at that RPM will have fallen off to the point where you should have shifted long before that.
Considering the flare on shift and the factory cam and valve springs, their red-line of 5,200 RPM is pretty accurate for repeated use. You might be able to get away with a few excursions into higher RPM ranges, or you might send rods through the case at lower RPM. It is highly variable depending on the condition of the engine and load at a given RPM.
Its your engine, and you're driving....
------------------
Later,
Vader
------------------
"Fear is how I fall, Confusing what is real..."
Adobe Acrobat Reader
Thread
Thread Starter
Forum
Replies
Last Post
RedLeader289
Tech / General Engine
10
May 28, 2019 01:47 PM
