Chevrolet 235 Engine Serial Number
1958-65 Chevrolet full size Engine Suffix codesFor 1958-65 Chevrolet 6 cylinder & Smallblock V8(this chart also includes 1965 396 engines)The suffix code for 6 cylinder engines can be found stamped on a pad near the distributor. Suffix codes for small block V8's are stamped on a pad located on the front of the passenger side cylinder head as shown in this example:An example: (T03I9QA)T=Tonowanda (assembly plant)03=March (month)19=19th (day)QA=400hp 409 (suffix code)Suffix CodesYearSuffix CodeCubic InchHorsepowerCarburetorTransmissionSpecial Notes1958A235145HP1 bbl3 speed1958AE235145HP1 bbl3 speedH.D. Clutch1958AF235145HP1 bbl3 speedTaxi1958B235145HP1 bblPowerglide1958BC235145HP1 bblPowerglideTaxi1958C283185HP2 bbl3 speed1958CB283185HP2 bbl3 speedH.D. Clutch1958CD283185HP2 bbl3 speedOverdrive1958D283185HP2 bblPowerglide1958DE283185HP2 bblPowerglideAir suspension1958E283185HP2 bblTurboglide1958ED283185HP2 bblTurboglideAir suspension1958CF283230HP4 bbl3 speed1958CF283230HP4 bbl3 speedOverdrive1958DB283230HP4 bblPowerglide1958DF283230HP4 bblPowerglideAir suspension1958EB283230HP4 bblTurboglide1958EF283230HP4 bblTurboglideAir suspension1958CH283250HPFuel Injection3 speed1958CY283250HPFuel Injection4 speed1958EC283250HPFuel InjectionTurboglide1958CJ283290HPFuel Injection3 speedHigh perf. Solid cam1958CZ283290HPFuel Injection4 speedHigh perf. Solid cam1959A235135HP1 bbl3 speed1959AE235135HP1 bbl3 speedH.D.
Friend bought a '50 pickup with a newer 235 engine to me for a tuneup. It had tremendous valve train noise, so I asked him what he knew about the engine.
Parts For 235 Chevy Engine
He told me a fellow gave it to him said, 'It was running when I took it out of the car.' I removed the valve cover, NO OIL coming to the valve train. 15 Pounds Oil pressure at 1,000 RPM. My '54 235 runs 50 to 55 pounds at 1,000 RPM even when warm.
He said the guy told him he had just installed a new set of hydraulic valve lifters. I attempted to adjust them, but no response, felt like they are all flat, no oil in the lifters at all. I suspect either a bad oil pump or rod/main bearings worn out.
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So much valve noise hard to hear but think I can hear at least one rod knocking. Told him I couldn't tune up his engine until we knew for sure we had an engine to tune up!Question, can someone tell me for sure if this engine is supposed to have hydraulic lifters? I looked up the engine number but all it says is '55 to '57 235 engine block.
Chevy 235 Engines For Sale
Reason for question is another friend put hydraulic liters in his 235, did't run well, lots of noise, fnally discovered that it wasn't set up for hydraulic lifters, I understand some trucks didn't have hydraulics. I don't know where the engine came from or what it was in, and neither does the current owner. On other hand, don't think hydraulic lifters in an engine not set up for hydraulic would cause loos of oil pressure.Thanks for any help,RonWilwood Engineering1955-1957Wilwood Engineering designs and manufactures high-performance disc brake systems.Wilwood Engineering, Inc. 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188Re: 235 Engine Number 383700402/18/13 12:30 AM. TheAll 1956 and 1957 car engines had hyd. All truck engines had solids.All 1956 and 1957 235 blocks had the 3837004 casting number.The Hyd. Lifter blocks were drilled differently.There was a passage that went from lifter bore to lifter bore and the oil filled passage supplied the oil to pump up the lifters.(hyd lifer enines only) A great amount of pressure is not necessary to pump up a lifter as the piston inside of the lifter is what fills the lifter.The lifter oil pasage is filled from the rear cam bearing which is in turn fed by the rear main bearing journal.
A pipe for sending oil up to the rocker arms is also fed from the same sorce. You will find an oil line is the rear lower corner of the push rod compartment. This brings oil up to the center top of th compartment. From there the oil passes around a gap in the head gasket and them up through the head to the rocker arm oil line.The truck enines had no oil going to the lifter gallery It didn't have the gallery) as they were designed for solid lifter.
The rocker arm oil passage frequently plugged-up with sludge and no oil would get to the rocker arms.Some very late 1957 car blocks had the redesigned lifter oil supply that the 1958 and up engines used. It did not have an oil line in the push rod compartment and the oil for the lifterd was fed by the front and rear main bearing-and when met in the center of the block the oil passage wen up to the center of the block and to the rocker arms.A Hyd. Lifter cam must run Hyd. Lifters or the idle will be very rough. If solid lifters are used on a Hd. Cam the valves will be very noisey and can't be adjusted to quiet downThe solid lifterssused with the later oiling system were cur down in the center like a Hyd.
So the oil could get from lifter to lifter.The number stamped into the ledge on the block behind the distributor will ID the engine. The engine serial number is: F 7 I I A Can anyone tell me for certain if this engine should have solid or hydraulic lifters?We have pulled the pan, full of goo. Removed the oil pump and have a new one to put back in. Removed side cover and verified that the engine does have hydraulic valve lifters, but am not certain that it should have hydraulics.
I am suspicious of the knowledge of the guy who says he installed new Hydraulic lifters. Wonder if it had Hydraulics originally or if he really doesn't know that there is a difference between solids and hydraulics???Removed the rocker arms, the shafts are completely clogged with sludge so will be cleaning them.
Removed the feed line to the rockers, it too is plugged solid so will be cleaned.Am planning to install the new oil pump and of course fresh oil, then use my handy dandy screw driver shank in my electric drill to run the oil pump without running the engine. By the way, I do this on all my rebuilds before starting the engine. It purges all the air out of the passages, assures me that the rockers are oiling properly and makes sure all the bearings are fully oiled before I crank it up. Eliminates the bearings running dry until the air is purges and all passages are full of oil.This will let me be sure oil is coming to the fitting in the lower rear of the valve train compartment.
If so, oil line re-installed and more turns on the oil pump. If oil comes out of the top end of the tube, then the rockers go back in and turned again to see that I have oil coming out of every rocker.
After that, install the distributor, time the engine and fire it up.Still want to be sure I know if it needs solids or hydraulic lifters.Thanks for any input on this engine.RonRe: 235 Engine Number 383700403/02/13 02:55 AM.