Advise needed on lq4 l92 head combo
#1
Advise needed on lq4 l92 head combo
not sure if this is where i post a thread, pretty much from what i seen is a lq4 l92 with ls3 intake as a engine setup, are the heads stock or do they need to have different components upgraded valvetrain wise? And is the motor stock on this setup people are using? Or should new rings and bearings be replaced when going this route? Also cant seem to see what to look for as far as when chosing a cam wondering whats the most common one... i have no goals hp wise just want a good daily driver with some get up behind it will be going into a 4400lb car
thanks for any info or links that you post here I appreciate the help and advise
thanks for any info or links that you post here I appreciate the help and advise
Last edited by jr6784; 02-09-2017 at 09:50 AM.
#2
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No.. they just change the heads.. and use ls3/l92 valve train which is offset.. no need to mess with rotating assembly unless ur doing a forged stroker set up.. just find a suitable cam and ur set to go
#5
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I'd have the heads cut .008"-.010" and run a .040" Cometic head gasket
You're trying to get the low 9.4:1 compression ratio up to around 9.75-9.8 or so
You also made no mention of trans/stall gear ratio or plans for the vehicle
4400 pounds is a ******* **** ton though
So keep the cam small. Cam Motion has a 212/216 that would be very driver
Friendly
You're trying to get the low 9.4:1 compression ratio up to around 9.75-9.8 or so
You also made no mention of trans/stall gear ratio or plans for the vehicle
4400 pounds is a ******* **** ton though
So keep the cam small. Cam Motion has a 212/216 that would be very driver
Friendly
#7
whats the better of the two? Im assuming getting lq9 flat top pistons and rods since The engine has 138k miles on it or even with that mileage messing with the bottom end is not necessary? And milling should be fine as is?
Last edited by jr6784; 02-09-2017 at 11:29 AM.
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#8
I'd have the heads cut .008"-.010" and run a .040" Cometic head gasket
You're trying to get the low 9.4:1 compression ratio up to around 9.75-9.8 or so
You also made no mention of trans/stall gear ratio or plans for the vehicle
4400 pounds is a ******* **** ton though
So keep the cam small. Cam Motion has a 212/216 that would be very driver
Friendly
You're trying to get the low 9.4:1 compression ratio up to around 9.75-9.8 or so
You also made no mention of trans/stall gear ratio or plans for the vehicle
4400 pounds is a ******* **** ton though
So keep the cam small. Cam Motion has a 212/216 that would be very driver
Friendly
#9
ok so just by buying the L92 heads and leaving them stock is fine and putting them on i should have no issues, sweet .... do you happen to know if headers that are used on the 317 casting heads( lq4 6.0) fit the L92 heads?
Last edited by jr6784; 02-09-2017 at 11:28 AM.
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#11
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I have a stock LQ4/L92 and before I installed the heads I called Brian Tooley, he said I would be disappointed with the L92 heads on the dished pistons unless I milled them. I sent to him (to check out the ported-by-other heads and install his springs) and he took them down about .025
#14
No dont have them, gathering the info before i go this route, what intake rockers and valves would i need for this? Thanks for this insight
#15
Thanks but i would like to avoid boring the motor with pistons, not wanting to go that route just yet i still need to swap this thing into the vehicle from what im reading and gathered so far is milling the heads and changing the intake valves and rockers is the route to go
#17
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With the stock dish pistons you will have to mill the head quite a bit to get decent compression. U just need the 8 intake offset rockers and stands. Go with a .045 to .050 gasket. Aluminum blocks can go a bit tighter because they expand more increasing the deck height.
#18
not sure if this is where i post a thread, pretty much from what i seen is a lq4 l92 with ls3 intake as a engine setup, are the heads stock or do they need to have different components upgraded valvetrain wise? And is the motor stock on this setup people are using? Or should new rings and bearings be replaced when going this route? Also cant seem to see what to look for as far as when chosing a cam wondering whats the most common one... i have no goals hp wise just want a good daily driver with some get up behind it will be going into a 4400lb car
thanks for any info or links that you post here I appreciate the help and advise
thanks for any info or links that you post here I appreciate the help and advise
If you mill the heads .020", you can get the compression up to 10:1. With a mild camshaft like our Cam Motion Titan 1 LS3 or Titan 2 LS3 cams, you will still have plenty of piston-to-valve clearance.
Which camshaft you chose will depend on your transmission, gearing, torque converter and desired performance characteristics. But, a 10:1 LS 3 headed LQ4 with a Titan 1 LS3 or Titan 2 LS3 camshaft will be a very spirited and fun powerplant for sure.