# LS1 Vs. LT4 **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [July 21, 2004, 7:59am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839 "2004-07-21T07:59:40Z")\ **Posts on this page:** 20\ **Page:** 2
**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:** [July 22, 2004, 6:05pm UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/21 "2004-07-22T18:05:12Z")
> [@bics56](#): > > Why is there so much LT4 hating here? They are a typical underrated GM engine that rips just as hard as a LS1. I would say stock vs stock equal drivers the LT4 wins barely. Just my $.02 not ---
**Author:** ![Black\_WS6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/black_ws6/32/5952_2.png) [@Black\_WS6](https://forums.speedlife.net/u/Black_WS6)\ **Post date:** [July 22, 2004, 9:16pm UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/22 "2004-07-22T21:16:42Z")
> [@bics56](#): > > Why is there so much LT4 hating here? They are a typical underrated GM engine that rips just as hard as a LS1. I would say stock vs stock equal drivers the LT4 wins barely. Just my $.02 I am not positive on this but, LT4=LT1 with heads and cam. Put heads and cam on an LS1 and see which is better. ---
**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:** [July 23, 2004, 3:42am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/23 "2004-07-23T03:42:09Z")
> [@Black\_WS6](#): > > I am not positive on this but, LT4=LT1 with heads and cam. > > Put heads and cam on an LS1 and see which is better. 🍺🍺 ---
**Author:** ![77rednecktruck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/77rednecktruck/32/5966_2.png) [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)\ **Post date:** [July 23, 2004, 9:34am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/24 "2004-07-23T09:34:00Z")
> [@Black\_WS6](#): > > I am not positive on this but, LT4=LT1 with heads and cam. > > Put heads and cam on an LS1 and see which is better. wouldn’t that be a ls6? :dunno: ---
**Author:** ![smokeyburnouts](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/smokeyburnouts/32/5987_2.png) [@smokeyburnouts](https://forums.speedlife.net/u/smokeyburnouts)\ **Post date:** [July 23, 2004, 9:57am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/25 "2004-07-23T09:57:26Z")
> [@2kaltima](#): > > wouldn’t that be a ls6? :dunno: for the most part, give or take a few things…good point. for what they r stock for stock, not adding heads and cam to a LS1 because the LT4 is a LT1 w/ heads and cam, they r very close. i give the nod to LT4 stock. LS1 when mods come into the picture. ---
**Author:** ![77rednecktruck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/77rednecktruck/32/5966_2.png) [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)\ **Post date:** [July 23, 2004, 10:02am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/26 "2004-07-23T10:02:26Z")
> [@smokeyburnouts](#): > > for the most part, give or take a few things…good point. for what they r stock for stock, not adding heads and cam to a LS1 because the LT4 is a LT1 w/ heads and cam, they r very close. i give the nod to LT4 stock. LS1 when mods come into the picture. so lt4\>lt1 ls1\>lt4 ls6\>ls1 460\>\* :D:D ---
**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:** [July 23, 2004, 11:03am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/27 "2004-07-23T11:03:58Z")
> [@2kaltima](#): > > so > > lt4\>lt1 > ls1\>lt4 > ls6\>ls1 > 460\ **Author:** ![77rednecktruck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/77rednecktruck/32/5966_2.png) [@77rednecktruck](https://forums.speedlife.net/u/77rednecktruck)\ **Post date:** [July 23, 2004, 11:30am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/28 "2004-07-23T11:30:12Z") > [@8.1crew](#): > > thats correct hahahaha ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [July 23, 2004, 9:33pm UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/29 "2004-07-23T21:33:39Z")
look at the zr-1…thats an lt4…and it had 405 hp…same as a z06…id say they r both about the same…and i think there is just as many parts for a lt4 as there is for a ls1 or ls6…the lt4 is just old news b/c of the ls1’s…but it was just in hot rod mag. as one of the best motors…soo i think its all a matter of opinion ---
**Author:** ![lt1power](https://avatars.discourse-cdn.com/v4/letter/l/ea666f/32.png) [@lt1power](https://forums.speedlife.net/u/lt1power)\ **Post date:** [July 23, 2004, 11:43pm UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/30 "2004-07-23T23:43:17Z")
> [@95greenZ](#): > > look at the zr-1…thats an lt4…and it had 405 hp…same as a z06…id say they r both about the same…and i think there is just as many parts for a lt4 as there is for a ls1 or ls6…the lt4 is just old news b/c of the ls1’s…but it was just in hot rod mag. as one of the best motors…soo i think its all a matter of opinion whoa hold up there zr1 had the lt-5 in it way different than an lt4 or any gm v8 for that matter. ---
**Author:** ![Black\_WS6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/black_ws6/32/5952_2.png) [@Black\_WS6](https://forums.speedlife.net/u/Black_WS6)\ **Post date:** [July 24, 2004, 12:14am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/31 "2004-07-24T00:14:15Z")
> [@lt1power](#): > > whoa hold up there zr1 had the lt-5 in it way different than an lt4 or any gm v8 for that matter. :eek4dance ---
**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:** [July 24, 2004, 3:39am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/32 "2004-07-24T03:39:57Z")
> [@lt1power](#): > > whoa hold up there zr1 had the lt-5 in it way different than an lt4 or any gm v8 for that matter. x3 he is correct!!! ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [July 24, 2004, 4:31am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/33 "2004-07-24T04:31:43Z")
oh ya…ur right…my bad ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [July 24, 2004, 4:43am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/34 "2004-07-24T04:43:05Z")
[QUOTE=Black\_WS6]I am not positive on this but, LT4=LT1 with heads and cam.QUOTE] ya…but the heads on an lt4 r totally different than an LT1… rocker arms in the lt1 r 1.5 rocker arms in the lt4 r 1.6 LT4 uses lighter valves and lighter valve springs intake ort on LT4 is .100" higher than LT1 compression is 10.8:1 on the LT4 where LT1 is 10.5:1 b/c of a smaller 3cc valve relief on the piston domes ---
**Author:** ![CamaroMuscleZ28](https://avatars.discourse-cdn.com/v4/letter/c/f9ae1b/32.png) [@CamaroMuscleZ28](https://forums.speedlife.net/u/CamaroMuscleZ28)\ **Post date:** [July 26, 2004, 4:02pm UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/35 "2004-07-26T16:02:25Z")
considering mustangs and other slow fords magizine always seems to praise or warn about the LS1 in many of their issues… LS1 hands down. I used to have one til a telephone pole got in my way. ---
**Author:** ![Turbo\_Silverado](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbo_silverado/32/5990_2.png) [@Turbo\_Silverado](https://forums.speedlife.net/u/Turbo_Silverado)\ **Post date:** [July 26, 2004, 7:39pm UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/36 "2004-07-26T19:39:39Z")
> [@CamaroMuscleZ28](#): > > considering mustangs and other slow fords magizine always seems to praise or warn about the LS1 in many of their issues… LS1 hands down. I used to have one til a telephone pole got in my way. well ur talking about mustsang mags. do they ever know what they r talking about??? :dunno: ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [July 27, 2004, 5:47am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/37 "2004-07-27T05:47:20Z")
> [@CamaroMuscleZ28](#): > > considering mustangs and other slow fords magizine always seems to praise or warn about the LS1 in many of their issues… LS1 hands down. I used to have one til a telephone pole got in my way. high performance car w/ a Low performance driver you got :owned: ---
**Author:** ![imported\_SINISTER](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_sinister/32/5970_2.png) [@imported\_SINISTER](https://forums.speedlife.net/u/imported_SINISTER)\ **Post date:** [July 27, 2004, 5:52am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/38 "2004-07-27T05:52:51Z")
> [@Shaggy](#): > > high performance car w/ a Low performance driver > > you got :owned: sliver? ---
**Author:** ![Shaggy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/shaggy/32/5945_2.png) [@Shaggy](https://forums.speedlife.net/u/Shaggy)\ **Post date:** [July 27, 2004, 5:57am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/39 "2004-07-27T05:57:49Z")
back? 😋 ---
**Author:** ![smokeyburnouts](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/smokeyburnouts/32/5987_2.png) [@smokeyburnouts](https://forums.speedlife.net/u/smokeyburnouts)\ **Post date:** [July 27, 2004, 10:20am UTC](https://forums.speedlife.net/t/ls1-vs-lt4/167839/40 "2004-07-27T10:20:27Z")
> [@CamaroMuscleZ28](#): > > considering mustangs and other slow fords magizine always seems to praise or warn about the LS1 in many of their issues… LS1 hands down. . thats probably because the odds running into a LT4 (especially an F-body) arent very likely. [Previous page](https://forums.speedlife.net/t/ls1-vs-lt4/167839.md?page=1) [Next page](https://forums.speedlife.net/t/ls1-vs-lt4/167839.md?page=3)