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  1. MikeB

    Camshaft flexibility for 1978 350

    The CL08-503-8 cam is for 1986-up factory roller cam blocks, also known as "one piece main seal" blocks. https://www.speedwaymotors.com/COMP-Cams-CL08-503-8-Xtreme-Energy-Hyd-Roller-Camshaft-Kit-GM-305-350,222838.html Comp probably has a "retro-fit" cam for earlier blocks, but they get very...
  2. MikeB

    Summit Carb Install Gone Very Wrong

    Looks like simply a bad casting. As for the carb, a buddy of mine has run the 600cfm version for around 8-10 years now. It worked great out of the box, and all I had to do was adjust idle mixture and speed. It's based on the old Holley 4010 series, with supposedly a few improvements. I...
  3. MikeB

    383 vortec high compression

    Last thing you want to do is lower compression by adding thicker gasket. That can easily make matters worse! I didn't read all the advice above, but want to add that what you need is pistons with a D-dish, like these...
  4. MikeB

    4L80E or GV Overdrive for my '90 Suburban?

    R2500 = 2wd, right? If so, why not take the simple route and change the ring and pinion to something like a 3.42, or whichever ratios are available for a 3/4 ton diff? RPMs would drop around 17%, and you'd still have converter slip to get you moving in first gear. I know my old SWB square...
  5. MikeB

    my whacked column rebuild

    Sounds like the OP is well on his way, but this is for future reference: I bought a very nice rebuilt column from Wayne at GM Tilt back around 2015. His after the sale support was great. I highly recommend him. http://gmtiltsteeringcolumn.com/
  6. MikeB

    Overheating “slightly” and infrequently

    Some electrical gauges will display different temps depending on voltage. For example, with ignition on, engine not running, and battery at 12 volts, a gauge might read 180. But fire up the engine, voltage jumps to 14 volts, and the gauge might read 190 or more. If you have a voltmeter, you...
  7. MikeB

    rear drums not workin

    Did you use new shoes on drums that have been turned? If so, the arc of the shoes will have a smaller radius than the arc of the drum. That causes only the center 1/3 or less (!) of the linings to make contact with the drum. Back in the day, shops would "arc in" the shoes so the entire lining...
  8. MikeB

    Need advice--Camshaft degree issue (maybe??)

    Just read your last post. If LSA is 107 (214 at the crank), then "straight up" would be 107 ATDC. So with intake center line at 102 ATDC, that's 5 degrees advanced, as you said. But using a stock timing set you would still get 5 degrees advanced, not 9 degrees. Where am I wrong here? Is...
  9. MikeB

    Need advice--Camshaft degree issue (maybe??)

    Actually, that's probably perfect! I know that most, if not all, of Comp's small block cams are drilled to be 4 degrees advanced with a stock timing set. So I'm assuming the same is true for your Olds cam. Good article here...
  10. MikeB

    Well crap

    They're not cheap, but I really like the Melling Select pumps. I have used the #10552 small block pump a couple of times with the #12558 3/4" diameter bolt-on pickup, which you can adjust for pan clearance. Description: Melling's years of experience are apparent in these Performance oil pumps...
  11. MikeB

    I'am Going To Build A Smooth Idle 427

    That should be a fantastic torque monster! Where did you get the camshaft and lifters? And is the manifold NOS? If not, how did you get it so clean? Super clean shop you have there!
  12. MikeB

    Setting Pinion Depth

    Yes, using the original shim gets the job done most of the time. I would think pinion depth measurement only works if the depth is marked on the pinion.
  13. MikeB

    New brake upgrade on the frame off restore

    Very nice! I put Wilwood's least expensive 4-piston calipers and 11.75" discs on the front of a 55 Chevy and absolutely loved them. Even with a manual master cylinder (also Wilwood) the car probably stopped better than 55s with cheap power brake conversions.
  14. MikeB

    Just fyi - I dyed my carpet - it came out great

    Back in the day I bought a black carpet that after a few years started to turn a reddish color where the sun hit it. Cleaned it and then sprayed it with Duplicable black dye. That was at least 10 years ago and it's still 100% black.
  15. MikeB

    Which brakes are right

    Another exception: Cylinder heads
  16. MikeB

    Which brakes are right

    Yes, base trucks got JB1 (manual) or JB3 (power) with 1.04" thick rotors. A step up was JD3 with 1.29" rotors. Calipers and inner wheel bearings were also different. Pads were the same. Did I get this right, Keith?
  17. MikeB

    Easy to install trans cooler and temp gauge recommendations

    My 69 C10's B&M light-duty aux cooler has been installed since 2002. I used high pressure trans cooler hose with fuel injection-type clamps. It's certainly not as robust as steel lines with flare fittings, but my point is it's not cheap hose that will easily crack. I probably need to replace...
  18. MikeB

    Cluster install for DUMMIES...help

    I spent a lot of time making sure I got mine right when installing a new universal wiring harness. This might help somewhat: Also, I found this Painless manual to be very helpful on everything electrical: https://www.painlessperformance.com/Manuals/20205.pdf
  19. MikeB

    Tap head bolt / intake bolt holes on rebuild?

    To the OP: On another note, be sure to run a brush through the oil galleries. And wipe down the cylinders with white paper towels and oil until you don't see any discoloration. The grit left over from honing builds up in the cross hatch and can cause abrasion of the coatings on the rings...
  20. MikeB

    Tap head bolt / intake bolt holes on rebuild?

    That's a nice set! I'll try it if I ever need to chase some fine threads or metric threads.
  21. MikeB

    Optima Batteries worth the cost?

    Maybe Elon Musk's battery plant should start making conventional car batteries. They'd probably weigh half as much and last twice as long as what's currently available. :cool:
  22. MikeB

    700r4 and th350

    That's only true if the TH350 has a 9" tailshaft, which is somewhat rare. With the more common 12" tailshaft you will need to shorten the drive shaft and relocate the crossmember. However, a 2004R is the exact same length as a TH350 with 12" tailshaft. Here's another chart...
  23. MikeB

    Lower control arm: u-bolt torque

    Torque on a 9/16" NC bolt is 85 lb/ft.
  24. MikeB

    Tap head bolt / intake bolt holes on rebuild?

    I don't understand what the stainless bolts will do. They are not designed to clean and restore the threads.
  25. MikeB

    Tap head bolt / intake bolt holes on rebuild?

    I've used these thread chasers for years. They don't cut the threads, they simply clean and restore them. https://www.summitracing.com/parts/sum-900200 Just found this: A cutting tap is designed to create new threads, whereas a chaser tap is designed to clean, re-form and restore existing...

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