Intake manifold question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Vintage Windmills · 01-05-2012, 11:31 PM

My original 1972 intake is going in the hot tank at the machine shop, I'm thinking I should take the sheetmetal cover off the inside but its riveted on. I assume this is needed to clean out in there. Does anyone have ideas on how to replace the rivets when reassembling? Drill and tap instead? Thanks all,

Jud

hugger6933 · 01-06-2012, 12:12 AM

You defininatly need to takethat cover off ,youd be suprised at the crud packed in under there. Take a cape chisel and tapout the rivits they come out pretty easy and then when ready to reinstall you have a choice there to rivet it back in or self tapping screws, later being the best option imo.

Vintage Windmills · 01-06-2012, 12:16 AM

thanks, yeah, I would think the screws would be better.

1968SWBBigBlock · 01-06-2012, 12:58 PM

use loctite on the screws - would not want them falling into the lifter valley!

Vintage Windmills · 01-06-2012, 01:27 PM

Thanks guys, rivets came right out, I assumed they weren't going anywhere and I'd have to grind. Glad I didn't! There was crud in there- looks like some micro kids were in there playing with those snake fireworks and left the evidence behind....

GRX · 01-06-2012, 04:21 PM

Yep. A lot of oil from the valley area splashes up under that plate & burns. Good that you took it off. I have seen a lot of engines and rebuilds ruined by particulates coming from under there.

01-05-2012, 11:31 PM	#1
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Intake manifold question My original 1972 intake is going in the hot tank at the machine shop, I'm thinking I should take the sheetmetal cover off the inside but its riveted on. I assume this is needed to clean out in there. Does anyone have ideas on how to replace the rivets when reassembling? Drill and tap instead? Thanks all, Jud __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

01-06-2012, 12:12 AM	#2
hugger6933 Registered User Join Date: Oct 2008 Location: Marianna Arkansas Posts: 7,257	Re: Intake manifold question You defininatly need to takethat cover off ,youd be suprised at the crud packed in under there. Take a cape chisel and tapout the rivits they come out pretty easy and then when ready to reinstall you have a choice there to rivet it back in or self tapping screws, later being the best option imo.

01-06-2012, 12:16 AM	#3
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: Intake manifold question thanks, yeah, I would think the screws would be better. __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

01-06-2012, 12:58 PM	#4
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Intake manifold question use loctite on the screws - would not want them falling into the lifter valley! __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

01-06-2012, 01:27 PM	#5
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: Intake manifold question Thanks guys, rivets came right out, I assumed they weren't going anywhere and I'd have to grind. Glad I didn't! There was crud in there- looks like some micro kids were in there playing with those snake fireworks and left the evidence behind.... __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

01-06-2012, 04:21 PM	#6
GRX Registered User Join Date: Jul 2010 Location: MD Posts: 1,937	Re: Intake manifold question Yep. A lot of oil from the valley area splashes up under that plate & burns. Good that you took it off. I have seen a lot of engines and rebuilds ruined by particulates coming from under there. __________________ 1969 c-10 Step Side Long Bed. I-6 250cid = = 1969 Pontiac GTO hard top. 400, 4-speed.



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