Tourque spec 96-00 upper intake 5.7 vortec

96z71sas · Mar 12, 2022

Does anybody know ware I can find the torque spec and pattern for the upper intake on a 5.7 vortec I have to replace fuel pressure regulator and can’t find this in Hayens thank you for any help

Jesse_Wenting · Mar 12, 2022

Installation procedure calls for 44 in-lbs on the first pass, then 88 in-lbs on the second pass.

Also included the lower intake pattern just for fun which get's torqued to 72 in-lbs first pass, and 10 ft-lbs on the second

96z71sas · Mar 12, 2022

Nice thank you I was afraid to try this with out specs I’m going to do mpfi upgrade I’ve read all good things about it thank you

96z71sas · May 21, 2022

Did

Jesse_Wenting said:
Installation procedure calls for 44 in-lbs on the first pass, then 88 in-lbs on the second pass.

Also included the lower intake pattern just for fun which get's torqued to 72 in-lbs first pass, and 10 ft-lbs on the second

did you ever pull an upper intake on one of these doesn’t seem to bad I guess

Jesse_Wenting · May 22, 2022

96z71sas said:
Did

did you ever pull an upper intake on one of these doesn’t seem to bad I guess

Yeah. I pulled the lower intake with the engine still in the truck once. I have mad respect for guys that do cam swaps without removing their engines lol. Things get a little tight at the back of the engine but it's not that bad overall. Upper intake coming off is really easy imo.

96z71sas · May 22, 2022

Jesse_Wenting said:
Yeah. I pulled the lower intake with the engine still in the truck once. I have mad respect for guys that do cam swaps without removing their engines lol. Things get a little tight at the back of the engine but it's not that bad overall. Upper intake coming off is really easy imo.

Ya I pulled it today what do you know about the fuel pressure key on ignition off I’m at 45 psi and it drops to 40 psi it’s gotta be the fuel pump but it starts and runs fine

GoToGuy · May 22, 2022

Haynes is good, better is the service and unit repair manuals are all here, complete, OE original, in pdf format, and free to download. Never have that " hmm is that really how that goes ?" , Iffy thoughts.
From the poeple that designed, engineered, and built it! Good luck.

Wendell · Jul 7, 2024

Jesse_Wenting said:
Installation procedure calls for 44 in-lbs on the first pass, then 88 in-lbs on the second pass.

Also included the lower intake pattern just for fun which get's torqued to 72 in-lbs first pass, and 10 ft-lbs on the second

My upper intake only has 12 bolts your diagram is showing 13

L31MaxExpress · Jul 7, 2024

I have never used a torque wrench or pattern on this. I start in the center and work it down evenly with a short 1/4" drive ratchet. Lube the o-ring on the fuel meter body and lift up on it so that it snaps/seats correctly into place.

Tourque spec 96-00 upper intake 5.7 vortec

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