# Cylinder Deactivation option

**URL:** <https://community.cartalk.com/t/cylinder-deactivation-option/164248>\
**Category:** General Discussion\
**Tags:** gmc, 1500\
**Created:** [May 13, 2020, 11:54am UTC](https://community.cartalk.com/t/cylinder-deactivation-option/164248 "2020-05-13T11:54:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![GRoy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/groy/32/5436_2.png) [@GRoy](https://community.cartalk.com/u/GRoy)\
**Post date:** [May 13, 2020, 11:54am UTC](https://community.cartalk.com/t/cylinder-deactivation-option/164248/1 "2020-05-13T11:54:58Z")

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I have a pretty simple questions. Do all of the V-8’s that GM makes have Cylinder Deactivation? Is it possible to purchase a plain old V-8 from GM anymore?

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [May 13, 2020, 12:41pm UTC](https://community.cartalk.com/t/cylinder-deactivation-option/164248/2 "2020-05-13T12:41:41Z")

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I think the iron block 6.6 liter V8 only has variable valve timing but not cylinder deact. The supercharged V8s in the Camaro, Caddy and older Corvette don’t have cylinder deact.

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [May 13, 2020, 12:44pm UTC](https://community.cartalk.com/t/cylinder-deactivation-option/164248/3 "2020-05-13T12:44:27Z")

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> [@GRoy](#):
>
> Is it possible to purchase a plain old V-8 from GM anymore?

Why do you need one . Many 4 and 6 cylinder engines make as much or more power as some of those yesteryear V8’s.

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**Author:** ![adamwilla16\_165450](https://avatars.discourse-cdn.com/v4/letter/a/c0e974/32.png) [@adamwilla16\_165450](https://community.cartalk.com/u/adamwilla16_165450)\
**Post date:** [May 13, 2020, 12:50pm UTC](https://community.cartalk.com/t/cylinder-deactivation-option/164248/4 "2020-05-13T12:50:24Z")

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We can deactivate the cylinder by deactivating ignition coil or injector. But if we haven’t separate control we can’t do it