Help please
Apr 4, 2018 | 09:21 PM
#21
Thread Starter
Staging Lane
Joined: Jun 2017
Posts: 75
Likes: 6
From: East Texas
I read somewhere that stock pushrod length for a lq9 is 7.835 ( LQ9 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders ). I threw some ls1 pushrods in and torqued to 22ft/lbs. it’s kinda noisy, perhaps I should have the 7.385”. The short block I started with was a lq4 but it had floating wrist pins. Does that mean it’s a 04+ Year model?
Apr 6, 2018 | 08:13 PM
#22
I read somewhere that stock pushrod length for a lq9 is 7.835 ( LQ9 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders ). I threw some ls1 pushrods in and torqued to 22ft/lbs. it’s kinda noisy, perhaps I should have the 7.385”. The short block I started with was a lq4 but it had floating wrist pins. Does that mean it’s a 04+ Year model?
If you do in fact have a 7.835 They are way to long and likely would not close the valve.
Apr 13, 2018 | 01:41 PM
#24
Thread Starter
Staging Lane
Joined: Jun 2017
Posts: 75
Likes: 6
From: East Texas
UPDATE: great news
i had ordered some spark plug wires, along with a WAlbro fuel pump cuz, what the heck, why not. The hottest temp I had was 615+ cyl#1. Put the new plug wires on and to my amazmenent the temps dropped! I almost fell out. Cyl #1 climbed up to 250 and then started going back down. It had original plug wires with 188k miles on them. I’ll put the WAlbro in this weekend. I hope this helps someone. I’m a happy camper for sure !! Now I need to figure out which two wires to pull out of the pigtail to accommodate the wires from the new pump
Last edited by Novicebuilder; Apr 13, 2018 at 03:25 PM. Reason: FORGOT TO ADD a word
Apr 13, 2018 | 03:06 PM
#25
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
On my junk exhaust temp about 3 feet after the head idles at about 800F and cruising is in the 1100F range. With the turbo pre-turbine it was in the 1400F range cruising and 1800F+ under load depending on how long.
Apr 14, 2018 | 08:56 AM
#26
Thread Starter
Staging Lane
Joined: Jun 2017
Posts: 75
Likes: 6
From: East Texas
Good to know for if I go turbo! I’ve read alot and watched a lot about turbos but not comfortable tackling a project like that, for now. I’ve seen twin turbo kits on eBay, $2200 for the silverado which isn’t bad! I like the idea of a ProCharger myself! Just happy to have figured out my issue
Last edited by Novicebuilder; Apr 14, 2018 at 08:57 AM. Reason: Misspelled a word
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