Help Identifying Engine
Thread Starter
5th Gear
Joined: Aug 2013
Posts: 5
Likes: 0
Help Identifying Engine
I have here a 66 stingray that is giving me fits.I am trying to adjust the valves on this 327 and have gotten nowheres fast because I do not really know what I have here.I have read that these have both solid and Hydraulic lifters and I also read that some earlier versions have 30/30 cams and Dontov cams.How would I know which I have in this motor?
The #s are 3970010
19GM
H19
I tried adjusting them from whatever imformation I could dig up and I had her running and running good,but she quit and now she doesnt start and the valves seem out of adjustment.Any tips or clues will be appreciated.
Thanks ahead of time
The #s are 3970010
19GM
H19
I tried adjusting them from whatever imformation I could dig up and I had her running and running good,but she quit and now she doesnt start and the valves seem out of adjustment.Any tips or clues will be appreciated.
Thanks ahead of time
Thread Starter
5th Gear
Joined: Aug 2013
Posts: 5
Likes: 0
I suspected is was a 68 just the way the #1 at the distributor is at the 1:00 position not the 12:00 position according to what little imformation that I can dig up on this motor.
I tried adjusting them with the engine running,got nowhere but a big mess.I tried adjusting them by going 90degree increments as one article stated.Like I said it was running great,but now just cranks.
Thanks for the quick response
I tried adjusting them with the engine running,got nowhere but a big mess.I tried adjusting them by going 90degree increments as one article stated.Like I said it was running great,but now just cranks.
Thanks for the quick response
Tech Contributor
Joined: May 2005
Posts: 15,576
Likes: 118
From: Conroe Texas
I would be over-reaching my knowledge, if I were to continue to try and help. I can adjust solid lifters cold, hydraulics while running, but can't think of anything in my limited experience that would help you figure out what you have.
My guess would be that you may have hydraulic lifters, which you last adjusted cold, engine off, as if they were solid lifters. If that were true then when you crank the engine and the oil pressure builds up the hydraulics would pressurize and now your valves may not close all the way.
But that is a BIG stretch and a HUGE guess.
Perhaps someone here will be able to offer ideas as to how to tell the difference and what to do next.
Good luck!
My guess would be that you may have hydraulic lifters, which you last adjusted cold, engine off, as if they were solid lifters. If that were true then when you crank the engine and the oil pressure builds up the hydraulics would pressurize and now your valves may not close all the way.
But that is a BIG stretch and a HUGE guess.
Perhaps someone here will be able to offer ideas as to how to tell the difference and what to do next.
Good luck!
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
This is not the original engine for your car so there's no telling what type of cam it has.
Instructor
Joined: Jun 2011
Posts: 146
Likes: 0
From: Portland Oregon
Mike, you seem adept at identifying engines--sorry to tag on to this thread.
I have an engine block marked 3892657 with a casting # of K236. Is this a 327 or 350?
Any comments would be appreciated.
I have an engine block marked 3892657 with a casting # of K236. Is this a 327 or 350?
Any comments would be appreciated.
Melting Slicks
Joined: Aug 2004
Posts: 3,078
Likes: 101
From: Riverhead New York
68cuda, I think a Compression test is in order. You really need to know what you are adjusting before messing with a Camshaft. Check your Studs for correct height as you may have pulled a few. Check the Lift on each Push Rod and finally, find Top Dead Center on Number one cylinder. Check for proper alignment of the Crankshaft Damper Timing Mark. Unknown engines are sometimes very mysterious! Al W.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Is there anything on the stamp pad?
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Thread Starter
5th Gear
Joined: Aug 2013
Posts: 5
Likes: 0
Thanks everyone for the help.I dont want anybody to think I am being rude or a butthead,but I am putting this project on the back burner for a couple of weeks.I have put a lot of time into this car and I just lost my brother recently,so I have other things I have to take care of.Please understand and I appreciate everbodies input and please keep them coming.I am learning alot from all and you are a great group.
I will keep everbody informed.
Again Thanks
I will keep everbody informed.
Again Thanks