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    GMT400 Vehicle Dimensions

    For anyone still needing this, use the link below for OBS Trucks and SUVs (had to dig for it, big shout out to Horns for the original find!) http://www.gmupfitter.com/files/media/photo/170/1999_LD_CKTruckCurrent.PDF
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    Suburban Picture Thread.

    Just saw this thread for the first time! Crap Instagram shot of my truck, I need to take better pictures
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    Cammed vortec doesnt start without opening throttle!?!

    Are you certain you lined everything up right putting the cam in with relation to the crank and the distributor in relation to the cam? Sounds like you might be a tooth off, it's worth a check.
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    Pulled distributor to check gear. Now engine won't start. 1997 5.7 VORTEC

    I have never had that happen (thankfully) but I will stop doing this immediately. I like my thumb :I
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    Pulled distributor to check gear. Now engine won't start. 1997 5.7 VORTEC

    Driver's side cover is a bit of a pain cause you have to slide the AC bracket forward to clear the cover to get it off. I do it all the time to mess with this or that under the cover. If you DON'T want to pull the cover, the other way to do it is as you turn the motor put your finger on the #1...
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    Pulled distributor to check gear. Now engine won't start. 1997 5.7 VORTEC

    ^ Bookmark this link and site. Excellent info for L31 Vortec owning DIYers who want to learn. I've used this site quite a bit over time.
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    What is the best aftermarket part you have put on your truck?!

    Definitely my cam and stall combo.
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    help selecting headers 97 silverado

    Cut the tube and pinched it off. Still passes visual and the EGR solenoid doesn't seem to care. No code, passed two years without any issues.
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    help selecting headers 97 silverado

    I run Hooker Competition headers intended for a 1992-1995 Silverado, they're 1 5/8" primaries to 2.5" collecters. Bolts up fine, fitment is perfect no problems. I'd recommend buying locking header bolts with it and using a good quality gasket. I also changed the 3 bolt flanges out for Flowmaster...
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    Cams....what's yours

    Comp XR276HR 276/281 Advertised 224/230 @ .050 .53X/.54X lift w/ 1.6 roller rockers 112LSA
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    Lt4 hotcam in my 98... Ive searched!

    I've got a Comp 224/230 @ .050 .530/.536 lift with 1.6 rockers, same spring/retainer setup in my Burb with the same engine as you, practically exact same setup. You'll want a stall to run it though, I have a 3000 stall in my truck with 4:11 gears and it's incredible.
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    Post YOUR Favorite Picture of YOUR Truck!!!

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    Anyone do a Manifold Spacer?

    What if you had a cam and were already tuned? Good band-aid measure to an engine getting close to running out of air up top?
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    Anyone broke a rod or blown up a stock L31?

    Blew my factory L31 letting my buddy drive my truck on the freeway, truck had a TransGo HD-2 in it with command shift and my buddy pulled the shifter from 3rd to 2nd instead of third to 4th at 90mph WOT rod came out, it was pretty gnarly
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    Header question!!!

    95 TBI long tubes worked fine for me port-wise, should do perfectly for you.
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    Hooker Competition Headers

    The system is actually dual 2 1/2" to the mufflers, then dual 3" over axle pipes. I actually didn't lose any low end as far as my butt tells me, I actually feel like it picked up seriously all round, low and high. The 3K stall helps it go down low though, plus the truck has 4.10s so it will pull...
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    Hooker Competition Headers

    I did! But school started up and it's been keeping me super busy. The system is still a little rough, I have to make a couple of adjustments and I found out that 2 3" pipes don;t like to pass through a space made for only one (between the leaf spring and gas tank on the passenger side...
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    Hooker Competition Headers

    Bolted up both headers today, built the bullets in with the x pipe and got the majority of the driver's side crossover done. I didn't have a chance to grab pics by dark (damn winter time dusk) but first thing tomorrow I'll grab pics of what's done so far and a video of the truck running open...
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    Hooker Competition Headers

    I dropped the headers in this afternoon, got the driver's side bolted up and done but the passenger side has issues I'm addressing in the morning. It looks like the O2 will clear fine but as you said Hezsus the firewall will need some convincing with a BFH to get clearance for the header. But...
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    Hooker Competition Headers

    I deleted my EGR; I pulled the tube and plugged it at the manifold.
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    Hooker Competition Headers

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    Hooker Competition Headers

    The Summit narrow X is excellent, it's welded nicely and has a tight center-to-center so it fits well. I think it was 38 bucks so it's real affordable too. Glad I could help! I'm excited to, can't wait to fire it up finished Friday night :)
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    Hooker Competition Headers

    Thanks for the advice! I'll wait to install the lock tabs after a couple of heat cycles and torquings. I think I'll clear alright, but we'll see what's up; one of the main things that drew me to the Stage 8s was not only the locking tabs but the allen heads too, that's a massive help, especially...
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    Hooker Competition Headers

    I was planning on sending both headers up from the bottom, but from the sounds of it I'll only be successful getting the driver's side up from the bottom, does the passenger side have to come down from the top? Do you have any other suggestions on how to deal with the locking bolts? It seems...
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    Cowl Hood and 22s

    That is a beautiful TBSS, so tastefully done and mean looking.

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