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  1. Grumpy

    Rubber Valve Stems With Covid

    Products made in China are no longer suspect, they ARE junk. Bendix brand air brake chambers made in China are no better than the no-name ones. In particular, if you thread a brass fitting into the chamber and try to immediately remove it, the aluminum galls and adheres to the brass fitting...
  2. Grumpy

    New sbc 400 blueprint engine keeps fouling plugs with gas

    First, many engine builders dyno their engines without an air filter, so having one that is even a little restrictive will cause the engine to run rich - think recreating the conditions they had at the dyno and make your adjustments from there. An A/F gauge is such an inexpensive tool these...
  3. Grumpy

    Seat covers, looking for recommendations - later in the thread reports on how my cover is holding up

    I will look back at my online purchases and tell you who NOT to buy from. The one I purchased was listed as for bench seat in 73-87 Chev/GMC. It arrived with cutouts for headrests, two dinky little pieces of cloth supposedly for the headrests, though not enough to cover the end of the...
  4. Grumpy

    Bringing the Cat back...enough is enough.

    Most emissions equipment creates more pollution than it prevents just through its own process of manufacture. Cats are filled with various rare metals, and it is the production of these metals where the biggest and longest lasting environmental impacts are created. The same goes for almost...
  5. Grumpy

    Cussin’ a Quadrajet!

    If any carburetor has been sitting for a few years, you may wish to remove the top and inspect the fuel bowl, as old fuel can turn into this hard caramel-looking stuff. Grab a new float, filter and problems after that are minimal.
  6. Grumpy

    1980 K10 Stepside Frame / Help

    Also, after 1981, the bolt spacing for the box is different. If you look at the specs for the frames, other than what the guys have previously mentioned, the only real differences are the frame horns and the locator hole beside the front shocks.
  7. Grumpy

    Best oil? Type, brand, viscosity, additives, etc.

    Myself, I highly recommend Lucas 30W Break-In Oil. It has all the necessary additives already in it for helping the rings seat properly. If you are using a new camshaft, I also would highly advise purchasing camshaft assembly lube from the same manufacturer, if at all possible - should...
  8. Grumpy

    What have you done to your square lately??

    There was something special from Santa! Got up at four AM to swap it in. Went from 3.23 Open Differential to 4.10 Limited Slip. (Insert Tim the Toolman grunt here.)
  9. Grumpy

    Just fried my 2nd fuel pump. Why?

    In addition to SirRobyn0, I would also add some extra ground straps wherever possible. Check for high resistance in the power circuits, as low feed will cause any electrical parts to fail early. edit: I have only seen one example of too many grounds. Years ago, while diagnosing an issue...
  10. Grumpy

    1986 454 700r4 swap. What should trans angle be at? thanks to aftermarket cross member.

    Nice swap. I am quietly jealous. The driveshaft should have both yokes at the same approach angles. Period. The driveshaft at straight through is not recommended. Reason? The universal joints are designed to move enough for the needle bearings to cycle a set amount - some manufacturers...
  11. Grumpy

    350 to 366 swap in a 75 C 30, How much of a PIA?

    The 366 is horrible as an engine! No power and the innate ability to never drive past a gas station for any reason. The cylinder bores were never meant to be machined more than +0.060" and the thought of stroking one is diving into money wasted. While the Mark IV Series includes the 366...
  12. Grumpy

    Help with identification

    My 85 has carpet and I checked..... not there.
  13. Grumpy

    What have you done to your square lately??

    Been making the engine pretty lately, though I will need to slow that process down for a bit, as my income doesn't match my wants for the squarebody..... and I'm getting sick of KD's and hot dogs, rice and hot dogs, and hot dogs...
  14. Grumpy

    Wondering if someone has any idea how to find out how many produced like this

    Looks like the Heritage Center is the old Photographic. There no such thing as that when I was at the dealer. I remember when the ad "this isn't your father's Oldsmobile" was all over...... no, Dad had a 442 that would keep burning rubber through all four gears, not burn the transmission...
  15. Grumpy

    700r4 questions

    You may wish to wire in a tell-tale for your TCC. This may confirm the nature of your complaint regarding the spikes in temperatures. If the spikes are not related to the TCC engagement and you have not noted any flare, I would suspect air ingress or the filter is not sealing correctly at...
  16. Grumpy

    700r4 questions

    I agree with Aurora. Your primary vacuum source for the lockup switch should be from the intake manifold just behind the carburetor; then check the lines to the thermac located on the water neck. On this vintage, verify the vacuum lines have not turned to spaghetti and cracked. Everything...
  17. Grumpy

    Wondering if someone has any idea how to find out how many produced like this

    I noted you have tilt steering and did not mention cruise control, these two were normally checked off together at time of order submission, regardless of engine. A common low-cost option was the sliding rear window; from the image you provided, I am unable to tell what is equipped there -...
  18. Grumpy

    Mechanical fuel pump beef/info rant

    When I started, the company had 800 employees. When this conversation took place, it was over 4800 personnel worldwide. Then shortly after, the original owners all started retiring and "corporates" moved in. Then everything imploded and self-destructed.... I think they are about 900...
  19. Grumpy

    Swapping 454 for a 307

    454 to 307........ Is everything okay?
  20. Grumpy

    cnc chamber vs compression and boost

    Larger chambers to increase flow around the valve has not been a concern since the 1980s, when the design of the chambers really came into its own. A larger chamber is simply a larger chamber these days. Your best option when picking out parts for your build are to keep the piston top as...
  21. Grumpy

    cnc chamber vs compression and boost

    If possible, I would contact Brodix themselves for their input - it can never hurt. Given the choice, I would always go for the CNC heads. Forced air only helps with the volume of air, the CNC chambers are what make everything equal from cylinder to cylinder, and this is important for smooth...
  22. Grumpy

    battery post mystery

    Regarding all electrical issues, including ALL trouble codes! After 35 years, I still find it unbelievable the sheer volume of techs/mechanics who refuse to perform the basics when diagnosing any problems regardless of whether they are starting issues, lamps or most common today: engine codes...
  23. Grumpy

    My teenager's first small block build

    As far as a first rebuild, I would angle towards the iron Vortec heads if available. To correctly install aluminum heads, the recommended gasket is a Fel Pro 1010 (or similar) as they are made to prevent brinelling of the head surface. If you wish to purchase these gaskets, ensure you are...
  24. Grumpy

    My teenager's first small block build

    Eight month turnaround for mine.
  25. Grumpy

    What have you done to your square lately??

    Block is back from the machine shop. Tanked; fluxed; line bored; cylinders bored +0.030"; decked 0.010" and cleaned again. The lifter bores have been grooved for extra oil to the camshaft; all the plugs are in and the oil hole for the oil pump has been lightly radiused. Painted Chevrolet...

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