# GM 6.0 Liter motor question... **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [May 13, 2006, 4:42pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224 "2006-05-13T16:42:06Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![JackdUp](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jackdup/32/6015_2.png) [@JackdUp](https://forums.speedlife.net/u/JackdUp)\ **Post date:** [May 13, 2006, 4:42pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/1 "2006-05-13T16:42:06Z")
Anyone know the mechanical and performance differences between the GM LQ4-U 6.0 liter and the LQ9-N 6.0 liter motors? ---
**Author:** ![BlkP42E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blkp42e/32/5938_2.png) [@BlkP42E](https://forums.speedlife.net/u/BlkP42E)\ **Post date:** [May 13, 2006, 4:45pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/2 "2006-05-13T16:45:09Z")
im sure brian does ---
**Author:** ![eurodad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eurodad/32/5988_2.png) [@eurodad](https://forums.speedlife.net/u/eurodad)\ **Post date:** [May 13, 2006, 4:51pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/3 "2006-05-13T16:51:46Z")
compression is higher on the lq9 ---
**Author:** ![Quik](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/quik/32/5979_2.png) [@Quik](https://forums.speedlife.net/u/Quik)\ **Post date:** [May 13, 2006, 5:07pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/4 "2006-05-13T17:07:21Z")
LQ9 has flat top pistons which makes for 10.1 CR also has stronger internals LQ4 has a dished piston which allows for 9.4 or 9.5 CR depending on the type of heads [iron/alum] stock for stock LQ9 better NA motor but ppl do boost them LQ4 is good building block for a boosted application with its lower CR ---
**Author:** ![JackdUp](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jackdup/32/6015_2.png) [@JackdUp](https://forums.speedlife.net/u/JackdUp)\ **Post date:** [May 13, 2006, 5:14pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/5 "2006-05-13T17:14:41Z")
Thanks for the info everyone! ---
**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\ **Post date:** [May 13, 2006, 5:35pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/6 "2006-05-13T17:35:15Z")
> [@Quik](#): > > LQ9 has flat top pistons which makes for 10.1 CR also has stronger internals > > LQ4 has a dished piston which allows for 9.4 or 9.5 CR depending on the type of heads [iron/alum] > > stock for stock LQ9 better NA motor but ppl do boost them > LQ4 is good building block for a boosted application with its lower CR ---
**Author:** ![bics56](https://avatars.discourse-cdn.com/v4/letter/b/47e85d/32.png) [@bics56](https://forums.speedlife.net/u/bics56)\ **Post date:** [May 13, 2006, 5:55pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/7 "2006-05-13T17:55:39Z")
seriously…you mods should make a forum called “ask quick” ---
**Author:** ![Quik](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/quik/32/5979_2.png) [@Quik](https://forums.speedlife.net/u/Quik)\ **Post date:** [May 13, 2006, 5:57pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/8 "2006-05-13T17:57:15Z")
> [@bics56](#): > > seriously…you mods should make a forum called “ask quick” hahahahaha, i know this one cause i have a LQ9 ---
**Author:** ![eurodad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eurodad/32/5988_2.png) [@eurodad](https://forums.speedlife.net/u/eurodad)\ **Post date:** [May 13, 2006, 5:58pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/9 "2006-05-13T17:58:20Z")
you should hear him talk. diarreah of the mouth and it will make you wish you were deaf.:blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: ---
**Author:** ![Quik](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/quik/32/5979_2.png) [@Quik](https://forums.speedlife.net/u/Quik)\ **Post date:** [May 13, 2006, 6:10pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/10 "2006-05-13T18:10:57Z")
🤣 :love: > [@5ltr eater](#): > > you should hear him talk. diarreah of the mouth and it will make you wish you were deaf.:blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :love: 🤣 ---
**Author:** ![BlkP42E](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blkp42e/32/5938_2.png) [@BlkP42E](https://forums.speedlife.net/u/BlkP42E)\ **Post date:** [May 13, 2006, 9:27pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/11 "2006-05-13T21:27:17Z")
> [@5ltr eater](#): > > you should hear him talk. diarreah of the mouth and it will make you wish you were deaf.:blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: 🤣 ---
**Author:** ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino)\ **Post date:** [May 13, 2006, 10:35pm UTC](https://forums.speedlife.net/t/gm-6-0-liter-motor-question/182224/12 "2006-05-13T22:35:08Z")
> [@5ltr eater](#): > > you should hear him talk. diarreah of the mouth and it will make you wish you were deaf.:blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: :blah: 🤣 luckily i have an off switch on my hearing aid:D: