[looking for BOP TH350 good running condition]

I'm getting rid of my ST300 and looking to a BOP TH350. Does anyone in the Midwest have a good Trans?

[ST300-Oil leak-Resolved]

Well, I wrapped the entire ST300 in shop towels and found the lower servo on the Passenger side leaks profusely, hence the shift to low producing the leak.

 

It's going back to my Transmission Guy this fall.

[ST300-Oil leak-Resolved]

Has anyone heard of "cork composite material"?

Better than good old gasket material?

[ST300-Oil leak-Resolved]

Revisiting this topic 22 years later. 

 

My ST300 likes to squirt about 4 ounces of AT Fluid when going from reverse to forward on a cold engine/transmission.

It's not the rear seal or cooler lines.

The pan gasket is wet toward the front passenger side.

I'm going to try a .060  gasket material.

Drives me nuts.

 

Hi to Ol Tank

Rick

[65 ST300 TRANSMISSION INPUT SEAL AND PAN GASKET]

Thanks Aaron

[65 ST300 TRANSMISSION INPUT SEAL AND PAN GASKET]

Does anyone know the best source for a ST300 Torque Converter to input shaft seal?

Also a pan gasket.

Or the part numbers?

 

Rick

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

UPDATE.........

 

After installing a fuel pressure regulator to 4.5psi, exchanged Edelbrock 1406 for a 1403 (Thanks Speedway) and switched to E-15 gas....

 

We have a winner ... runs smooths as glass at idle, low end and acceleration.

 

The mechanical fuel pump was putting out 8psi

[BUICK-O-LANTERN]

a

[BUICK-O-LANTERN]

For your BUICK HALLOWEEN PARTY.

 

A BUICK-O-LANTERN

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

Hey Ben good to hear from you.

 

Hopefully the warm weather will hang on long enough to try this fall.

 

Otherwise we'll be shut down for winter, just as you Texans are beginning to run the streets. 

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

So....

Bill Stoneberg would say to me.. you idiot have you checked all the specs?

Like the fuel pressure?

 

Did you read the manual???

 

Read the manual "who does that?"

 

No I did neither till last night.

 

Edlebrock in the manual states "Operating fuel pressure should not exceed 5.5"

 

My new fuel pressure gauge reads 7.7 to 8. 

 

Meaning your pushing fuel past and over flooding the engine and fouling plugs. Also discoloring the carb, which it did.

 

There lies the diagnoses

[Bill Stoneberg]

So sad to hear.

Bill was a true Buick Enthusiast, a great friend to all.

 

He gave so much to us in the BCA that can never truly be measured.

 

He had the courage to standup and sound off about the BCA's finances and then worked to correct them with countless hours of dedication.

 

I had a chance to work with him closely when, by his suggestion, the Ames, Iowa  Event took place.

 

Best to you Bill,

 

Deepest regrets to Dee.

Rick Young

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

Update.

Speedway is going to give me a full return credit.

 

But I did check fuel pressure and it's steady at 7 1/2.

Is that too much  to blow over the float?

The front half of the carb is varnished with dark fuel after 3 hours of running??????

 

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

I'm going back to SPEEDWAY tomorrow and demand the jets NTX mentioned and let you guys know what I find out

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

Dang I've worked cars for 50 plus years, this one has me stumped.

 

NTX, I think you may be right on the jets.

Also, I'm suspicious of the timing. I had a similar setup on a 64 skylark with the 300 and ran like a sewing machine

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

NTX5467

What I meant was "HEI" . I have my Sunday brain going.

 

And good to hear from you as well

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

And Hey John,

 

Been a while.

 

Thanks for the posts

 

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

Stock Camshaft

Timing with vacuum line unhooked is 2.5 BTDC (What my spec sheet recommends) goes to about 15 degrees BTDC with vacuum line attached

Thermostat 180 degrees and 180 after warmup

Stock mechanical fuel pump

[65 BUICK 300 FOULING PLUGS EVERY 40 MILES]

Hey All,

It's been a while but I'm still wrenchin' Buicks.

I have a freshly overhauled 65 300 with factory square bore 4 hole intake.

With a new 1406 Edlebrock 600 cfm.

All 8 holes at 160 compression.

15 plus vacuum

Dwell at .30 

2" ZOOMIES with  4" inserts for mini muffler

Standard factory distributor with new points and condenser - non efi. (The combined type)

So the problem.... the plugs turn black after 30-40 miles.

Backfires (mostly front four holes) I can tell by watching ZOOMIEs

It is running rich

 

I'm down to 

1. too much carb. but I've talked to several who advise the carb is not too big.

2. put on efi distributer for more spark?

 

Any thoughts???

[LOOKING FOR 65 BUICK 300 CI HEADERS]

I'm putting it in a 23 roadster.

The 300 is balance/blueprinted and upped to a 340 cam/pistons.

 

I have nice cast exhaust for sale

[LOOKING FOR 65 BUICK 300 CI HEADERS]

Can't seem to find headers for a 65 300 CI.

 

Or does a 68 350 have same bolt pattern

[1965 4 barrel intake #1366695 matching carter carb and air cleaner assembly]

Do you still have this.

Rick Young

buickman@ymail.com

515-460-0952

[WTB 1965 BUICK 300 4BBL INTAKE]

Looking for a 65 300 4 bbl intake.

 

# 1366695 

 

Cast iron head on cast iron block

 

Rick Young

buickman@ymail.com

515-460-0952

[WTB NAILHEAD]

Thanks to all that responded here or by email.

 

I found a 65 300 with a ST300 attached.

 

There are still barnfinds out there.

I found this in a barn less that a mile from my house in Jewell, Iowa.

 

Been there for 30 years

[IS THERE A TH350 TRANS THAT WILL FIT ON A 66 401 NAILHEAD?]

Thanks to al who replied here or by email.

 

I found a 300 Nailhead with a ST300 that will work perfectly