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Time to 392 Swap my Challenger

Started by 72hemi, April 03, 2025, 08:40:39 AM

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72hemi

After years of constant internal deliberation, I've finally come to the conclusion I need to do a 392 swap on my 72 Challenger. This was my first car and I have owned it since 1997. Currently it has a 340 6 pack and a 4 speed, and while I have considered adding EFI to the 340 at the end of the day you just can't beat the ease and simplicity of the modern hemi swap with all the aftermarket support. And with a toddler and most events I attend being 2 plus hours from home, it just makes sense. In recent years I have gone through and upgraded the suspension, and added Dakota Digital gauges, so the brakes and drivetrain are next and I hope to complete this conversion later this year. I have been reading threads on here and posts on various Facebook groups to try and do as much homework as possible to be prepared for this project. I know there are a few holes left I need to fill in terms of learning and parts list, but I know with the vast resources here I'm certain they can be filled. Here are some pictures of my car currently as well as the parts list I have compiled so far.
Life's too short to drive boring cars

72hemi

A couple of questions I have right now are will the Mopar AC compressor clear the Borgeson steering box and what is the consensus on fuel regulator and connecting the 3/8 hardline to the fuel regulator and subsequently fuel rail?
Life's too short to drive boring cars

74-5.7

Quote from: 72hemi on April 03, 2025, 10:42:29 AMA couple of questions I have right now are will the Mopar AC compressor clear the Borgeson steering box and what is the consensus on fuel regulator and connecting the 3/8 hardline to the fuel regulator and subsequently fuel rail?
I can't help with the ac compressor question.
the fuel line you can use rubber fuel injector hose And fuel injection system hose clamps and Dorman brand products makes a connector that goes from rubber line to the fue rail. That is the economic way otherwise get AN fittings and braided fuel line.


Xghobo

For fuel reg most install the Corvette regulator on the rear crossmember. It works great as the gen3 has no return and that regulator has fuel input and return on 1 side and the outlet side use AN 6 fittings with braided steel lines to the fuel rail. The LS1's work on same psi as our gen 3 so it is ready to go. Have fun

Katfish

No physical interference issue with Borg and AC,
Just need to get creative on the hose routing.


Cudajason

I will be following along!  I am seriously considering going the route too!
1974 Cuda. 360 / A500 OD.  Yes its pink, no its not my wife's car!  Yes I drive it.


72hemi

Thanks for the quick responses everyone! Really appreciate it. I will look into that Corvette regulator, that seems like a nice effective off the shelf answer. And that is great news about the clearance with the AC compressor and the steering box. Hose routing for me is going to have another level of complexity by going to hydro-boost on the brake system and adding a power steering cooler as well (just in case).

I'll be posting my progress here with photos for sure, but still debating on how much I will film for my YouTube channel Life at Speed. I've been taking a break from making videos lately and spending as much time with my toddler as I can. So it will be a balance of focusing on getting the work done and adding film time.
Life's too short to drive boring cars