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OBS c1500 lt4/10l90...zl1500

Conversions & Swaps LSX Engines in Non-LSX Vehicles

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OBS c1500 lt4/10l90...zl1500

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Old

Dec 1, 2024 | 05:43 PM

#1

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OBS c1500 lt4/10l90...zl1500

Zl1 drivetrain into an OBS for my buddy
ported S/C and heads with 103mm TB
Btr stage 3 PD cam

All bolted in its new home

All bolted in its new home

Stock manifolds hit frame... bolted these cheap shorties on there fpr now but got some long tubes on order

Stock manifolds hit frame... bolted these cheap shorties on there fpr now but got some long tubes on order

Old

Dec 1, 2024 | 05:48 PM

#2

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Studded with new tie bar lifters and cam upgrade...also locked out vvt

Studded with new tie bar lifters and cam upgrade...also locked out vvt

Heads all ported and new springs

Heads all ported and new springs

Had to notch the frame just a bit to clear this tensioner

Had to notch the frame just a bit to clear this tensioner

Old

Nov 17, 2025 | 07:51 PM

#3

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Bumping this. Where’s the build at now? Need more pics.

Old

Nov 17, 2025 | 08:15 PM

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Forgot about this thread... she is a ripper now

I realize I never got any good pics of the engine bay complete.

I have it torn down right now adding some port injection because its never enough...

Engine in and all hooked up

Engine in and all hooked up

Made shift cable bracket to keep factory shift on 10 speed

Made shift cable bracket to keep factory shift on 10 speed

Battery on frame

Battery on frame

Old

Nov 17, 2025 | 08:21 PM

#5

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Cab off to get header off...kinda sucks

Cab off to get header off...kinda sucks

Port plates fitted under blower. Adding weapon x kit with flex sensor

Port plates fitted under blower. Adding weapon x kit with flex sensor

Old

Nov 22, 2025 | 12:16 PM

#6

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From: Ann Arbor, MI

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Thanks for the update. Sure looks great.

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