66 Coronet Convertible

[Daytrepper]

Hi all, brought this 66 Coronet convertible home last week. 440/4 speed (not original); Body is in great shape, a couple soft spots in the drivers floor; other than that she needs alot of misc things---oil leaks fixed, steering gear, engine upgrades, some interior and trim pieces etc; I'll be pulling the engine/trans and going thru both this winter. Looking forward to checking out the forums here and diving into this build!

 

[jusglazin]

Hi all, brought this 66 Coronet convertible home last week. 440/4 speed (not original); Body is in great shape, a couple soft spots in the drivers floor; other than that she needs alot of misc things---oil leaks fixed, steering gear, engine upgrades, some interior and trim pieces etc; I'll be pulling the engine/trans and going thru both this winter. Looking forward to checking out the forums here and diving into this build!
View attachment 1188778

Working on a 66 convert as well. Good luck with the build.

 

[RemCharger]

Welcome! We would sure like pics of your teardown, I know I could use some I've got 2 of these lol

 

[Dakar Timm]

Welcome , as a newer owner of '66 Coronet convertible ,I'm damn glad you are here

 

[Dakar Timm]

Welcome , as a newer owner of '66 Coronet convertible ,I'm damn glad you are here

View attachment 1188917

p.s. ...what is the bike parked next to it ?

 

[PRND21]

Welcome from Indiana. Great looking Coronet!

 

[YY1]

Nice.

I likes me some 66/67's.

 

[Daytrepper]

p.s. ...what is the bike parked next to it ?

BMW K1600B

 

[theman440]

Nice car, seems like there were a lot of red convertibles built. I have a blue one myseff -

 

[Dakar Timm]

Well then I can see you are a man of taste and distinction .That K1600 is a big boy

 

[Daytrepper]

View attachment 1189071
Well then I can see you are a man of taste and distinction .That K1600 is a big boy

Thanks, Nice collection you have there.
I'm glad to have the B. She is a big bike that I can jump on and cruise 400 miles nice and comfortably!

 

[67 Coronet Conv]

Twins?

 

[Daytrepper]

Welcome! We would sure like pics of your teardown, I know I could use some I've got 2 of these lol

Pics to come. Weekend of Dec 4th is the planned tear it all to pieces date.

I'm hoping to find some pics here as well so I know what's missing, and how certain original things "should be"...lol.

 

[Daytrepper]

Got the project off the ground today. Engine is out! Trans to follow shortly.

 

[jusglazin]

 

[jusglazin]

View attachment 1206349 View attachment 1206350

One step ahead of you. Lots of fun. Good luck

 

[jusglazin]

One step ahead of you. Lots of fun. Good luck

 

[Daytrepper]

Got the 440 tore all to pieces today.

Definitely hasnt been touched in years. Every gasket was leaking, lol. Only evidence of anyone being in it is number stamps on the connecting rods and welds on the crank to balance it. That is good; someone balanced it. Not sure if this was factory or not.

Going to send it to the machine shop for a deep clean, bore, new cam bearings, and a balance--and whatever else it might need once they get everything measured up.

Calculated compression ratio at 7.65:1; that suggests a truck/RV engine, not a C-body engine as originally thought. Its definitely a 71 block going by the casting numbers. It had the emissions heads on it.

No worries, parts have already arrived to handle that. Once built, it will be around 10.5:1.

Yanked the transmission as well. Its in good shape, just needs a good cleaning and some new gaskets/seals. Found rear end to be a 69+ "489" 8 3/4; looks to be a 2.76 ratio. Going to tear that apart, new bearings/seals, and go back with probably a 3.55 ratio.

 

[jusglazin]

Got the 440 tore all to pieces today.

Definitely hasnt been touched in years. Every gasket was leaking, lol. Only evidence of anyone being in it is number stamps on the connecting rods and welds on the crank to balance it. That is good; someone balanced it. Not sure if this was factory or not.

Going to send it to the machine shop for a deep clean, bore, new cam bearings, and a balance--and whatever else it might need once they get everything measured up.

Calculated compression ratio at 7.65:1; that suggests a truck/RV engine, not a C-body engine as originally thought. Its definitely a 71 block going by the casting numbers. It had the emissions heads on it.

No worries, parts have already arrived to handle that. Once built, it will be around 10.5:1.

Yanked the transmission as well. Its in good shape, just needs a good cleaning and some new gaskets/seals. Found rear end to be a 69+ "489" 8 3/4; looks to be a 2.76 ratio. Going to tear that apart, new bearings/seals, and go back with probably a 3.55 ratio.

View attachment 1209764

That 2.76 might not be a bad ratio depending on your plans for the car. Mine had a 2.91 and I swapped it for a 3.55. With the torque I have there was no need for the change and it lights up the tires with ease. If you are not racing the 2.76 will would be nice for cruising.

 

[Daytrepper]

That 2.76 might not be a bad ratio depending on your plans for the car. Mine had a 2.91 and I swapped it for a 3.55. With the torque I have there was no need for the change and it lights up the tires with ease. If you are not racing the 2.76 will would be nice for cruising.

Thanks! That answered my main question...this ratio is a first for me. Not planning to race. Just want the car to be a bit wicked on the street, and be able to cruise at the same time.

I can always change it out later if I dont like the 2.76.