LS7 installation questions...

[Corsair613]

This is still slightly premature, but I'm beginning to get my engine compartment in order and have been thinking about the LS7 engine installation. Some questions (in no particular order):

• What are the best lift points for the engine?
• What are the engine mount torque settings - both mount-to-block and mount-to-chassis?
• I received a Moroso component (inline filter?) with my oil "stuff", but it's not depicted in any of the bulkhead diagrams I've seen. Where does it go?
• Where do the various senders (oil temp, oil pressure, water temp) go?
• Since the speedometer is taking its data from the ECU, should I use the same sender (at the left driveshaft), but simply use the engine loom connection vs. the Ultima one?
• The engine loom has a single terminal for the brake - does that have anything to do with the pressure sensor (which activates the brake lights) currently connected to the Ultima loom?
• How much oil is required by the LS7 in the Ultima? On initial fill, how much goes into the engine vs. the dry sump tank?
• Have I got it correct that the coolant system requires 17 liters of 50/50 mix filled via the swirl pot (with the heater valve open)?
• Can I trust the component mounting locations specified on the bulkhead layout diagram? I'd hate to have to move anything and wind up with extra holes.

Thanks for the info! I'm sure I'll have more questions as the engine installation gets underway in earnest. Other than the coolant data, I couldn't find any of this documented anywhere.

Ken

[Corsair613]

Thanks, Paul - very much appreciated!

True, I've got something of a calibrated right arm with respect to torque after all these years, but I always prefer to know the real, book number if at all possible. I'll see what I can chase down for those engine mount fittings and report back here with any info.

Ken

[Corsair613]

Paul,

Thanks.

A bit of searching indicates 37 ft. lb. for the engine mount to block bolts. The engine mount to chassis bolts I'll just look up in the standard tables based on bolt size.

Ken

[Corsair613]

Thanks for the link!

Here's a similar doc for the LS7: LS7 Torque Specs

Ken

[Corsair613]

Storer said:

Ken

As a farmer, no bolt can ever be too tight. They only rattle loose....

Paul

Paul,

While I can definitely appreciate the sentiment, especially in steel (until you reach the bolt's shear point), I can see all sorts of ugly things happening by overtightening in aluminum. I'd hate to have to Heli-Coil a brand-new block…

Ken