Engine Clearance

[Canadianwraith]

Does anyone have an idea on the clearance between a LS3 oil pan and and the cross member? I've got 1.25" between them. My headers (long tube) hit on my upper control arms and also on the floor of the car. Wondering if I should change motor mounts to drop the engine a bit or just switch to mid length headers.

[Z06vet]

What car/truck are you working on? The LS3 pan does not typically fit my stock frames. What engine mounts & crossmember are you using?

[Canadianwraith]

69 camaro stock subframe made my own engine mounts. Just wondering if I should make new ones to drop the engine closer to the cross member

[Z06vet]

Use all the Holley/Hooker swap components for the stock frame. Clamshell engine mounts, trans cross member, Oil pan, headers, etc. All designed to fit together. Lowers the engine in the frame which allows for acceptable driveline working angles without having to raise the trans tunnel. Do it once, and enjoy. By far the best option for the stock frame.

[andrewb70]

Use all the Holley/Hooker swap components for the stock frame. Clamshell engine mounts, trans cross member, Oil pan, headers, etc. All designed to fit together. Lowers the engine in the frame which allows for acceptable driveline working angles without having to raise the trans tunnel. Do it once, and enjoy. By far the best option for the stock frame.

^^^^This

Andrew

[Motobrewmaster]

I can confirm this.

[Canadianwraith]

Really goes to show the amount of homework necessary before beginning your build

[streetk14]

I just did this. There is a ton of homework that you need to do before jumping into this, that’s for sure. The Holley/Hooker clamshell mount setup and trans crossmember allowed me to bolt my LS7 and T56 Magnum into my stock 68 front subframe without issue. I used the Mast oil pan, as there was conflicting info on whether the Holley pan would work with my 4” stroke.

I have a brand new set of Hooker Blackheart long tubes that work with the Holley mount kits. I’ll be selling them if you’re interested. They won’t clear my ridetech steering system, so I’m going another route. I just haven’t gotten around to posting them for sale yet.