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Winter project, 1987 Barth Regal
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I don't have to worry about saying "I have nothing to do". I'm going to replace the intake manifold and use this opportunity to also install a new camshaft. And since the water pump is coming off, a new one is going on. Because I have gone through 3 of the aluminum "7N4" AC compressor brackets, I am also going to make measurements to see if I can get a steel worker to laser cut some 3/16" plate, and with spacers, come up with a reliable solution. The guys in the Airstream forum also hate bracket 7045871. The rear support bracket seems to be missing in many cases. The bracket is a casting and depends upon "flatness" of the mounting surface. One of the mount points is on the water pump, and I wonder if manufacturing variances in that unit cause problems in the bracket.

I ordered a carb spacer because the intake manifold center divider comes flush to the carburetor mount point. There seems to be empirical tests to show that having a gap here helps low end torque. The stock manifold has an interesting steel port to allow for some degree of pressure balance in this position. If I don't go with the 1" aluminum spacer I might just run a 0.25" thick gasket spacer. Milodon makes a high volume thermostat. I need that.

This list is specific to a 1986 454 but might prove useful to others.


List of large parts
* Weiand 8122WND Intake Manifold, Street Warrior, Dual Plane, Aluminum, Square/Spread Bore, Chevy, Big Block, Peanut Port
* Crane 10304 Camshaft, Hydraulic Flat Tappet, Advertised Duration 266/266, Lift .499/.499, Chevy, Big Block
* Edelbrock 7809 Timing Chain and Gear Set, Performer-Link, Double Roller, Iron/Steel Sprockets, Chevy, Big Block, Set
* Those first 3 are all "Made in USA". It gives me a feeling of confidence.
* Elgin Hydraulic Flat Valve Lifters HL-1817S
* GMB-130-1320P - Water Pump, Replacement, High Volume, Chevy 454
* Dayco 71429 - Dayco Molded Radiator Hose
* Continental Elite 61569 Radiator Coolant Hose Lower
* TRW 26004 Coolant Water Outlet (small part but large in impact - cross references to GM 338117 from 1963 I-6 engine, needed because the stock 14087436 water neck will mount at a different rotation on the new manifold, you can get this in iron and aluminum, I chose NOS iron on Ebay)

List of small parts
* Crane Cams 99168-1 - Crane Cam Locking Plate and Bolt Kits
* Fel-Pro TCS45272 - Fel-Pro Timing Cover Gaskets
* Fel-Pro 70194 - Fel-Pro Distributor Base Gaskets
* SCE Gaskets 11306 - SCE Fuel Pump Gaskets
* Mr. Gasket 5827 - Mr. Gasket Ultra-Seal Intake Manifold Gaskets, Composite, Oval, 2.16 in. x 1.85 in. Port, .060 in. Thick, Chevy, 396-454, Set
* Mr. Gasket 954G - Mr. Gasket Hex Head and Socket Head Intake Manifold Bolt Kits
* Right Stuff Detailing TPC8654 - Right Stuff Detailing Fuel Pump to Carburetor Lines, Pump to Carburetor, Steel, Chevy, GMC, Each
* Standard Motor Products PVS80 - Standard Motor Ported Vacuum Switch
* Standard Motor Products PVS102 Ported Vacuum Switch
* Fel-Pro 17843 - Fel-Pro Marine Carburetor Mounting Type, Spread Bore, 4-Barrel, Open Center, 0.250 in. Thick, Paper
* Fel-Pro 1605 - Fel-Pro Performance Fel-CoPrene Valve Cover Gaskets
* Trans-Dapt Performance Products 2109 - Carburetor Spacer, Aluminum, 1 in. Thick, Open, Spread Bore
* Four Seasons 84757 - Four Seasons Heater Fittings, Plastic, Y Type, Hose Barb, 5/8 inch, 3/4 in. Legs
* Ideal Tridon stainless steel hose clamps, various sizes
* Victor Reinz OS30931X Engine Oil Pan Gasket Set 65-90 Chevrolet 396 402 427 454
* Woodruff Key
* MIL-16400 - Milodon High-Flow Thermostat, 160F
* rubber vacuum lines, various sizes
* steel line to replace the line between the manifold and transmission
* 3 hose split exhaust flange, size TBD

List of chemicals
* Mr. Gasket 78080G - Mr. Gasket RTV Sealant
* Permatex 56521 - Permatex High Performance Thread Sealant
* Permatex 81724 - Permatex Ultra Blue RTV Silicone
* Crane Cams 99008-1 - Crane Engine Assembly Lubes
* Loctite 37418 - Loctite Threadlocker 242 Medium Strength
* EAR-D024ERL Earls Thread Sealant, Instant
* 99003-1 - Crane Super Lube Break-In Concentrate

List of tools
* SUM-900134 Camshaft Installation Handle, Hex Design, Bolts Included, Chevy, V8/90 Degree V6
* SDM-PCE397-1002 - Speedmaster Crankshaft Sockets
* I've got a harmonic balancer puller
* I'll need a crankshaft gear puller and installer


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust
 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
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The work in progress: the radiator and all the belt driven accessories are off the engine. The intake manifold is off. The old timing chain and camshaft have been replaced. Because of the studs on the intake manifold which mount the front brackets, it was necessary to take the brackets off. With the front parts off the engine, it seemed prudent to replace the water pump and fuel pump at this time. "might as well do a camshaft too!". To remove the timing cover, most bolts need to be remove from the oil pan. To remove the rear bolts, to which access is impeded by the oil cooler pipes, it was necessary to remove the oil cooler mount. I sometimes ask, "Did I sign up for this?" D'oh

The intake manifold will be bolted on this weekend. The picture is my version of the parts counter.

Happy Motoring!
Matt


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust


 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
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The two manifolds, old and new. Please note the rust hole on the driver side of the carburetor mount area.

That got this job going....

Matt


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust


 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
Picture of BarthBluesmobile
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There was lots of play in the timing chain. Though there is under 40K miles on it, probably the original design specifications did not call on the plastic gears having to remain dimensionally stable for 33 years. Look at the amount of deflection in the chain. No wonder the look under a timing light looked so erratic at idle.

I haven't found a suitable serpentine belt system yet. I would have expected to find some at the junkyards, but apparently old engine parts get shipped overseas quickly, to be recast as something else. I still like the idea of having two belts going to the hydroboost pump, and I have never had problems with those belts or those associated brackets. I will probably be sticking with the stock belt setup.

I will probably have a machinist cut some steel plate for me to make a replacement bracket for the stock Sanden AC compressor mount. Though I will get a price check on getting an iron version of the bracket cast at a nearby foundry.

I have been finding parts at Summit, Rock Auto, and ebay. www.gmpartswiki.com is a great resource to learn about too.

Happy Thanksgiving!
Matt


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust


 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 1/19
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Actually, as timng chains go, that one looks pretty good. Still has teeth on the plastic gear and not that much slop. (I have seen them so loose they rub on the inside of the cases!)

For sure replace it all! You will have years of service ahead of you. You're giving me flashbacks on my 454 jobs... confusion


9708-M0037-37MM-01
"98" Monarch 37
Spartan MM, 6 spd Allison
Cummins 8.3 300 hp
 
Posts: 4255 | Location: Kalkaska, MI | Member Since: 02-04-2011Reply With QuoteReport This Post
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quote:
You're giving me flashbacks on my 454 jobs...


Steve VW, your stories of your 454 jobs have inspired me! Big Grin

That Edelbrock timing chain I installed seemed to fit perfectly! What I've found works great, and I found this by accident, was that in November the sun is low, and I had parked the Barth facing the sun of the morning. It is a great way to illuminate the engine compartment. I wished I'd parked the front wheels on some 2 inch thick paving stones; I hadn't thought about having underside access when doing an intake manifold job, but just a little more clearance would have helped.

Matt


1987 Barth 27' P32 Chassis
Former State Police Command Post
Chevrolet 454
Gibson Exhaust
 
Posts: 347 | Location: Massachusetts | Member Since: 07-28-2006Reply With QuoteReport This Post
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    Forums    Tech Talk    Winter project, 1987 Barth Regal

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