The Stovebolt Site Forums The Shop Area Engine Shop is it a 230 or a 250? HELP!!! Presure plate too???

I was given an engine for FREE!!! I was told that it is a 250 but everything I have found tells me is a 230...I am now asking for some help.

The number of the block is 3921968 and on the pad by the distributor there is a F1220cq 18W265334

I believe this came off a car with an autimatic tranny...how difficult is it to use it with a manual transmission.
Currently, I have a 194, which I would like to swaop with theis 250, if in fact is a 250...THANK YOU

If I remeber right, you can look down the spark plug holes and tell the difference. The 230 has flat top pistons and the 250 has dish top pistons.

I may be all wrong here, but I remember reading that some place.

Try and find the date code on the head or block, the two engines used the block so the numbers will show both.

A manual trans will bolt right up with the correct bell housing. All inlines from the 194 -292 family will work along with the small block family and maybe big block.

Joe

The engine serial number suffix "CQ" shows up in 1968 passenger applications on both of these lists as "250 with Powerglide".
http://novaresource.org/codes.htm
http://no25.chuckthetruck.com/page3.html

Thank you everyone, so now I know is a 250, which it will be a nice improvement from the no 194 in my turck.

My last question is can I used the flywheel, pressure plate and clutch from my 194 into this 250...the 250 is automatic....does that make a difference since I am using a manual transmission.

I was told to keep the head from my 194 and use it on the 250...any opinions?

Thank you again

The flywheel and such will bolt right to the bigger engine. As far as the 194 head goes, yes it has smaller chambers and will raise the compression, but the ports are so poorly designed that you won't see much if any gain with out a lot or porting and flow bench time.

Jump over to the Inliners.org web site and read up on the 292 dyno topic or the 250 dyno topic. Tom Lowes has done a lot of testing on these two engines and swapped a lot of parts. They have proved what works and what didn't. The 194 head was one of the ( didn't work like we thought) items.

Joe

Just make sure there is a pilot bearing in the crank for the manual transmission input shaft.

Rolling dices,

WATCH OUT changing flywheels on the 194-230-250-292 at just about the date you mention. Bolt sizes change! If the bolts are the same size, ok, but do, not use a flywheel with large bolt holes on a crank for the smaller bolts. The small bolt flywheels can be drilled out by a machine shop. I am pretty sure that there were three different bolt sizes, 7/16, 1/2, and 9/16, but don't quote me on that. Measure and check stuff. The time you spend checking is never a waste compared to another crankshaft!

As a matter of passing, I think that the 250 engine is just about the best inline 6 Chevrolet ever built. Keep oil in them and they'll go forever.

As Lonnie said, don't forget the pilot bearing.

best wishes,

Les

Wow!!! Really thankful for all of the info all of you have provide me with. That flywheel thing I will make sure to check, specially cause the 250 doesn't have one.
I am thinking to buy me a "CHEVROLET 230 250 292 194 INLINE 6 ENGINE POWER MANUAL BOOK" I am hoping this helps me cover must of the info I will be needing.
I have never worked on a chevy motor before, all my experience has been air cooled engines, porsches, VWs, and a few Austins and MGs so I am exited to get his engine going.

...Any more info or pointers, feel free to post them...I need to be schooled and I am greatful for it.

I have one more question and hoping I can get your help...
I have now taken the 250 apart and put it back together and it is almost ready to be installed. My dilema comes with the clutch and pressure plate (which I want to replace since I am taking the 194 engine out and replacing it), I will be taking the flywheel off the 194 that it is currently instlled in the truck and installing it on the 250...How do I buy the presure plate and clutch??? Do I purchase one for a 250, since the motor is one, or a 194 since the flywheel is a 194 and or should I buy one based on the tranny which it's stock?

Thank you in advance...

Most likely they are the same parts. If the 250 will fit, go with it, it should be a little more heavy duty since the engine is bigger.

Just looking at Rockauto.com, the 194 uses a 10" clutch in the Chevy II with 194 engine, the trucks with a 230 CI engine use a 10", 11" or optional 12" clutch. Looks like you have plenty of choices.

Joe

the 250 uses SBC clutch parts

Measure the dia. of the old clutch disc & get one the same dia. You can't put a 11 in on a 10 in flywheel. You can put a 12 in clutch on a 11 in flywheel, but I wouldn't recommend it unless for HD service & a HD trans.

Well sounds like I got my work cut out. I will wait until I remove the 194 and will try to get the same clutch set up. Thank you all, like always all of your info is very valuable.