Starting engine without transmission installed??
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Senior Member
Joined: Nov 2009
Posts: 349
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From: San Jose CA
Car: 1986 IROC-Z
Engine: 305 TPI
Transmission: 700r4
Starting engine without transmission installed??
Never done it or though about it, but i have a vehicle thats been sitting for a while without a transmission and i want to see how it runs still!
may sell it for camaro parts
could this damage anything?
may sell it for camaro parts

could this damage anything?
Joined: Nov 2005
Posts: 1,946
Likes: 0
From: Sacramento
Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: Starting engine without transmission installed??
Well, for starters there's very little supporting the engine without a transmission. What exactly this means for you, I don't know. I can't really think of any other major issues. The flywheel will weight CONSIDERABLY less because there is not clutch/torque converter bolted to it, so enjoy the throttle response.
I've never done it but at the moment I can't imagine any major problems and I probably wouldn't hesitate to do it myself if I really needed to.
I've never done it but at the moment I can't imagine any major problems and I probably wouldn't hesitate to do it myself if I really needed to. Moderator


Joined: Jul 1999
Posts: 17,265
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Starting engine without transmission installed??
I fired one up sitting on the floor. It had a jack stand on either side under the motor mounts and sat on the oil pan. Didn't even have exhaust manifolds. I was selling the engine and the buyer wanted to know if it would run. Put a fuel line into a gas can, used a battery to jump the starter and fired it up. Didn't even have coolant. Flames were shooting out the exhaust ports but it ran and he bought it.
Installed in a car without a tranny, I'd at least support the back of the engine. The exhaust is the only thing keeping it from tipping back on the engine mounts. A floor jack or a bottle jack and a 2x4 under the oil pan is enough.
I've built a few engine stands and I build them so if I ever wanted to, I could fire the engine up while it's bolted to the stand. Never had to do it yet. Just need to leave enough room for the flexplate to clear.
Installed in a car without a tranny, I'd at least support the back of the engine. The exhaust is the only thing keeping it from tipping back on the engine mounts. A floor jack or a bottle jack and a 2x4 under the oil pan is enough.
I've built a few engine stands and I build them so if I ever wanted to, I could fire the engine up while it's bolted to the stand. Never had to do it yet. Just need to leave enough room for the flexplate to clear.
Thread Starter
Senior Member
Joined: Nov 2009
Posts: 349
Likes: 0
From: San Jose CA
Car: 1986 IROC-Z
Engine: 305 TPI
Transmission: 700r4
Re: Starting engine without transmission installed??
thanks darkshot. i may just try it tomorrow! haha.
and thanks stephen 87 iroc, if it still runs as good as it did a year ago, i may just get all fired up and fix the **** and sell it(finally)
and thanks stephen 87 iroc, if it still runs as good as it did a year ago, i may just get all fired up and fix the **** and sell it(finally)
Last edited by IROCK ZZ; Dec 16, 2009 at 11:00 PM.
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