Re: 1966 GMC 305 V6 Service
 

Timing chain play may be one of the factors of worn 305E's personality.
Ran fine for me but took new driver a while to operate smoothly.
New chain gets bath.
No energy wasted stamping timing marks.

Re: 1966 GMC 305 V6 Service
 

Fuel pump cam.

Re: 1966 GMC 305 V6 Service
 

Oil filter housing mystery.
By-pass valve can't open if filter gets clogged.
Pretty sure it was that way in 72 when truck purchased.
Musicman70's by-pass is installed other way.

Re: 1966 GMC 305 V6 Service
 

My 305E solid lifter first start plan; comments welcome.

More advance maybe more engine heat.
Less advance maybe more header heat.
Mark dist #1 TDC before pulling worn engine.
Measure solid lifter cold lash on worn engine.
Valvoline 10W-30 VR-1 conven racing; API=SL, Zn/Phos = 1400/1300 ppm (6-8-2011).
Select filter w/ anti drain-back valve.
Rare earth magnet in pan and on filter.
Prime oil pump and verify flow to rockers.
Set static timing.
Adjust solid lifter cold lash on the loose side.
Install engine.
Verify transmission fluid.
Little 2 stroke oil in gas tank.
Top off coolant then install T-Stat.
Ready box fans and water spray for cooling radiator fins.
Ready oil psi gauge; IR gun and timing light.
Top carb bowl or use minimal starting fluid.
Run 305E solid lifter 1000 rpm for 10 mins.
Verify rocker oil flow and 20psi oil.
Set timing w/ light.
Mild revs not to exceed 2000 rpm.
Keep between 160 to195F.
Top coolant and install cap after T-stat opens.
Shut down at 10 mins.
Torque heads and intake.
Run at 2000 rpm 10+ minutes w/ mild revs.
Torque heads and intake.
Inspect oil filter element and drained oil..
New oil/filter.
Drive easy for 25ish miles avoiding steady rpm.
Check solid lifter lash.
Drop oil and inspect oil and filter element.
Run conventional oil for 500 miles.
Torque heads and intake.
Set solid lifter hot lash.
Inspect filter element and drained oil.
Run slightly used oil through coffee filter and donate to beater car.

Re: 1966 GMC 305 V6 Service
 

So happens the threads for my steering wheel puller fit and was long enough to draw damper into position. Otherwise a long bolt w/ proper threads and some spacers would work.

Re: 1966 GMC 305 V6 Service
 

Cleaned one head w/ roloc and other the old fashioned way.

Re: 1966 GMC 305 V6 Service
 

Thought I'd give Permatex Copper Spray-A-Gasket a try.

Re: 1966 GMC 305 V6 Service
 

New solid lifters.
New push rods.
New oil pump drive shaft.
Prepping rocker arms for inspection.

Re: 1966 GMC 305 V6 Service
 

Spent one rotation cleaning cylinders w/ WD40. May squirt a shot of WD40 in plug holes before installing plugs.

Re: 1966 GMC 305 V6 Service
 

Short block coming together.

Re: 1966 GMC 305 V6 Service
 

Some long block progress

Re: 1966 GMC 305 V6 Service
 

Great write-up, your attention to detail/knowledge has convinced me that I have no business rebuilding our 351E. Let me know when you want us to ship ours to you for "service" ;)

Re: 1966 GMC 305 V6 Service
 

Good idea; don't forget the refreshments and I could use a few petite helpers:)

Re: 1966 GMC 305 V6 Service
 

Getting ready to drop the solid lifter 305E V6.

Re: 1966 GMC 305 V6 Service
 

Musicman70 turned me on to Napa mount which crossed to Anchor 2337 and fit perfect.
I loosely attached one mount then released hoist pressure.
Moved chain to list engine port/starboard.
Loosely attached all front motor mount bolts while listing engine back and forth.
Released hoist pressure then shot both trans mount bolts.
Applied thread locker to trans mounts and torqued to 35 ft/lbs (don't know OEM spec).
Gradually tightened front mounts while rocking engine under hoist pressure.
Dropped engine and torqued all mount bolts.

BTW: Anchor 2337 has those pesky metric threads.

Re: 1966 GMC 305 V6 Service
 

Trans mounts 2107 and 2108 fit perfect but you must make sure spacer and mount rubber is under compression. Galvanized pipe makes a strong spacer. Test fit required to make sure rubber is snug when bolt tightened against spacer.

Re: 1966 GMC 305 V6 Service
 

Refreshments are no problem, but I've never been referred to as "petite"...does that mean the deal is off??:lol::lol:

Re: 1966 GMC 305 V6 Service
 

This is a great write-up Ruf and thanks for mentioning me. Really enjoy the detail and photos on the V6 all broken down like this. Subscribed!

Re: 1966 GMC 305 V6 Service
 

Funny:)

Re: 1966 GMC 305 V6 Service
 

Thanks.

Re: 1966 GMC 305 V6 Service
 

Delayed tip: Dip stick tube address should be marked before removing.

Heat didn't help extract the block PCV filter house. Slide hammer didn't work. Don't know proper way to remove. Can grind a heavy putty knife to get a purchase under small lip. Prying against the lip worked but not easy because little real estate to gain purchase. PCV house was perfectly content w/ it's 1966 address.

May be able to drive out from bottom like dip stick tube but I removed from other block and didn't wanna remove crank.

Re: 1966 GMC 305 V6 Service
 

Wow! Wonderful write up and beautiful work. The boys over at 6066gmcclub would love to see it. Really great work man.
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Re: 1966 GMC 305 V6 Service
 

Thanks.
I tried to get on over there a few weeks back for 3 days.
I guess their site was under construction.
I'll look for a 6066gmcclub round to it:)

Re: 1966 GMC 305 V6 Service
 

I have a heck of a time getting on that site too. 1 in 5ish chance of getting on when I try.

Re: 1966 GMC 305 V6 Service
 

305E Starter.
I like to put axle grease or anti-seize on electrical terminals.

Re: 1966 GMC 305 V6 Service
 

1966 GMC clutch linkage.
Made new linkage from carriage bolt.
I like to drill for bronze or steel bushings.

Re: 1966 GMC 305 V6 Service
 

Adjusting clutch w/ feeler gauge would be easy if had a helper.
Welded a washer to linkage to reduce bushing stress.

Re: 1966 GMC 305 V6 Service
 

Converted clutch to diaphragm a few years ago and like it.

Re: 1966 GMC 305 V6 Service
 

Finished transmission, parking brake, exhaust, drive shaft then sat er down.
Set solid lifter cold lash.

Re: 1966 GMC 305 V6 Service
 

Filled filter then primed oil galleys.
Confirmed 60 PSI.
Confirmed oil to all rocker arms.

Re: 1966 GMC 305 V6 Service
 

:two:It's alive!!!!:gmc2:
:metal:

Re: 1966 GMC 305 V6 Service
 

Awesome!

Any unexpected issues?
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Re: 1966 GMC 305 V6 Service
 

Congrats - I know the feeling!

Re: 1966 GMC 305 V6 Service
 

It behaved perfect w/o an issue.
Took 22 minutes before I turned on 115 VAC backup fan to assist cooling that massive V6.
Ended up doing a 45 minute break-in.

Re: 1966 GMC 305 V6 Service
 

That's awesome Ruf; need more pics ya'know.

Re: 1966 GMC 305 V6 Service
 

Thanks.
I'll post a few more pics.
Took a low res video but couldn't sneak it in as an attachment.

Re: 1966 GMC 305 V6 Service
 

Some things I did for kicks:
Took some lift measurements for reference.
Used 2 stroke fuel as starting fluid.
Put 5 gal 50:1 ratio 2 stoke fuel in tank.

Re: 1966 GMC 305 V6 Service
 

When I went to hook up tach I noticed coil +/- hooked up opposite than I think it should be.
Coil polarity wrong for decades I guess; ran fine though.
I connected coil "-" to distributor.

Capacitor wire broke off; maybe something to do w/ radio interference.
Don't know if cap difficult to find.

Re: 1966 GMC 305 V6 Service
 

Complete GMC 305E V6 solid lifter

Re: 1966 GMC 305 V6 Service
 

Rufton,

I did not read through every post, but IF you have not made the following modification I would suggest it.

Add the petronix ignition and get rid of the points and stuff. It will be the best $75.00 you spend, installs in less than 10 minutes.
I did it and not regretted it.

Jake