70 Camaro - Boise, Idaho

[Goosesdad]

Appreciate any advice here.
The original plan was to drive the dry-sump pump from a pulley behind the crankshaft pulley. However, a 4 stage pump will not fit here with a DSE subframe...without significant modification to the crossmember, engine mounts and the exhaust. Significant is an understatement.

Aviaid has suggested this drive pulley which would mount on the front of the crankshaft pulley which would pull the pump forward. It doesn't completely solve the problem but makes the modification manageable. It will require that I build a custom mount for the pump but it seems doable.

The fear with some I've spoken to is the torque on the crank, bearings and the pulley with this hanging off the front.

Though some think it's no problem.

DSE doesn't know of anyone running an LS7 with an external dry sump pump with their subframe.

Appreciate opinions and any advice.

[CJD Automotive]

Originally Posted by Goosesdad

The fear with some I've spoken to is the torque on the crank, bearings and the pulley with this hanging off the front.
Though some think it's no problem.
Appreciate opinions and any advice.

While it does stick out a good bit, remember there is no tension on a dry sump belt. The drive mandrel and spacers are aluminum, so don't weigh much, and small in diameter, so not much centrifugal force. Unless your spinning it 10,000 RPM, I wouldn't be too concerned. I'd probably be more concerned with belt protection on a street driver. Not sure if you have a belly pan under the nose/engine? if so, I'd still want some protection from top in case the serpentine belt cam off, or broke, so that it wouldn't knock the dry sump belt off. Maybe that's overkill, but I put a shroud on mine. Very least, set up an oil pressure safety that kills the engine, in the ecu.

[Goosesdad]

Originally Posted by CJD Automotive

While it does stick out a good bit, remember there is no tension on a dry sump belt. The drive mandrel and spacers are aluminum, so don't weigh much, and small in diameter, so not much centrifugal force. Unless your spinning it 10,000 RPM, I wouldn't be too concerned. I'd probably be more concerned with belt protection on a street driver. Not sure if you have a belly pan under the nose/engine? if so, I'd still want some protection from top in case the serpentine belt cam off, or broke, so that it wouldn't knock the dry sump belt off. Maybe that's overkill, but I put a shroud on mine. Very least, set up an oil pressure safety that kills the engine, in the ecu.

Much appreciated, I will shroud as you suggest and I agree with the loss of pressure engine kill. Thanks again!!

[Goosesdad]

Mold is done, giving it a full week to cure before busting it out. Finally! 19 section mold. That was tedious.

[Tinker]

The hours of labor in this project is unbelievable. Are you keeping track of them or is it something you really don’t want to know? Lol
You truly have an impressive one of a kind car. Keep up the great work because we are all dying to see this one completed.

[Goosesdad]

Originally Posted by Tinker

The hours of labor in this project is unbelievable. Are you keeping track of them or is it something you really don’t want to know? Lol
You truly have an impressive one of a kind car. Keep up the great work because we are all dying to see this one completed.

Thank you Chris

[Cramer4918]

Originally Posted by Goosesdad

.

The fear with some I've spoken to is the torque on the crank, bearings and the pulley with this hanging off the front.

Though some think it's no problem.

That will not be a problem at all. Think about the guys running the 6-71 and 8-71 blowers with the pulley mounted to the balancer. I’m sure the tension on that belt is nowhere near what’s needed for the blowers.

Everything looks amazing! You have mad skills! 🤙🏼

[Goosesdad]

Originally Posted by Cramer4918

That will not be a problem at all. Think about the guys running the 6-71 and 8-71 blowers with the pulley mounted to the balancer. I’m sure the tension on that belt is nowhere near what’s needed for the blowers.

Everything looks amazing! You have mad skills! 🤙🏼

Great point, appreciated! Thank you Matt!

[Goosesdad]

Mold done, demo'd the plug. Some cleanup on the mold before making the actual part.