Conversions & Swaps LSX Engines in Non-LSX Vehicles
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69 Pontiac Custom S LS1/4L80 Swap

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Old 09-20-2016 | 03:20 AM
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Nice looking car & motor. What gears do you plan on running?
Old 09-20-2016 | 11:09 AM
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I have an eaton posi with 3.55 gears in a 12 bolt
Old 12-07-2016 | 12:30 PM
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Default Installing exhaust and readying for tune and dyno

Engine Bay
Attached Thumbnails 69 Pontiac Custom S LS1/4L80 Swap-engine-bay.jpg   69 Pontiac Custom S LS1/4L80 Swap-engine-bay-4.jpg   69 Pontiac Custom S LS1/4L80 Swap-engine-bay-5.jpg  
Old 12-07-2016 | 05:46 PM
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I went with a US Shift Quick 4 trans controller and TCI outlaw shifter with the two manumatic shift buttons (paddle shifting without the paddles). The TCU is programmable to hold different tables so you can have street, strip and auto-x options ready to go. It allows you to adjust torque convertor clutch control, throttle lift delay and overdrive shift delay. I'll let you know how it performs after putting it through some trials.
Old 12-07-2016 | 07:27 PM
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It looks like you're getting close to the finish line.
Old 01-02-2017 | 10:17 AM
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Default Exhaust and Dyno

415 RWHP at 118 MPH! Still working on tune. There is more power there. No driveline vibrations. I do have some drone at idle. 3 inch exhaust with dynomax superturbos. Any ideas on remedy?

I have an outlaw shifter with the two buttons on the grip. The manumatic shifting with Jake's 4l80e and US Shift Quick4 controller is a blast.
Attached Thumbnails 69 Pontiac Custom S LS1/4L80 Swap-dyno-rwhp.jpg   69 Pontiac Custom S LS1/4L80 Swap-exhaust.jpg   69 Pontiac Custom S LS1/4L80 Swap-exhaust1.jpg  
Old 12-21-2017 | 12:09 PM
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Probably a noob question but what kind of alternator bracket is that?
Old 12-21-2017 | 12:55 PM
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Originally Posted by CHIVOBLING
Probably a noob question but what kind of alternator bracket is that?
That is either the C5/6 Corvette bracket or the Holley bracket. Those two are nearly identical, except the Holley bracket uses the less expensive truck alternator instead of the more expensive Corvette alternator.

Andrew
Old 12-21-2017 | 01:26 PM
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Originally Posted by CHIVOBLING
Probably a noob question but what kind of alternator bracket is that?
Its the corvette bracket from Pace Performance.
Old 12-22-2017 | 09:20 AM
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Thanks
Old 12-22-2017 | 02:27 PM
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Originally Posted by 69 Custom S Vert



Holley 302-2 oil pan stroker mod complete
what are those engine mounts? are they stock 4th gen fbody mounts?
Old 12-22-2017 | 03:39 PM
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Originally Posted by 72poncho
what are those engine mounts? are they stock 4th gen fbody mounts?
No, those are regular early Chevrolet engine mounts with adapter plates. The Holley mount system uses the 4th gen Camaro engine mounts.

Andrew
Old 12-22-2017 | 03:45 PM
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I think he's talking about the brackets/mounts that are pictured further back in the thread Andrew, which are the Hooker brackets/4th-gen F-body mounts as you mentioned. I take that back, I re-read the post and the picture posted with it.

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Old 12-22-2017 | 06:44 PM
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Originally Posted by 69 Custom S Vert
415 RWHP at 118 MPH! Still working on tune. There is more power there. No driveline vibrations. I do have some drone at idle. 3 inch exhaust with dynomax superturbos. Any ideas on remedy?

I have an outlaw shifter with the two buttons on the grip. The manumatic shifting with Jake's 4l80e and US Shift Quick4 controller is a blast.
Did you remove the convertible crossmember brace because the exhaust didn't fit with it installed ?? Thx
Old 12-26-2017 | 08:21 AM
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Originally Posted by Project GatTagO
That is either the C5/6 Corvette bracket or the Holley bracket. Those two are nearly identical, except the Holley bracket uses the less expensive truck alternator instead of the more expensive Corvette alternator.

Andrew
The GM Vete alternator backets are smooth while the Holley versions have trusses that stick out. Not smooth. Don't know how else to say it. LOL.



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