Okay so I spent the last three days searching the site and I guess a lot of people have this problem, but I couldn't figure it out or find the right answer, so here goes: I recently purchased a SBC 350 from a guy who told me they tried to put it in a work truck but the gears in the rear end wouldn't work with it (would only do 25 mph) so they pulled it. The price was good so now it lives on an engine stand in my garage. I want to put it into a 50 chevy coupe I'm building but everytime I try to by parts for the engine I get the same question, "year make and model of the vehicle?" It's funny the looks you get from the kid behind the counter at the auto parts store when you say "1950 chevrolet...." So any way I been punching the numbers off the block but still no luck with what it came from or what year it is. CAN ANYONE HELP??? PLEEEEASE? This is what I got: On the rear passenger side where the bell housing would bolt up: 14093638 Opposite that on the driver's side: GM 5.7LG, SGI and under that a stamp that looks like " LO" or if you turn around a look at it from the tranny end "07" and in between those, closer to the center line of the engine what looks like " B230" or maybe "8230" not sure which. At the front of the engine just below the passenger side head, V0305UXH Which from what I read is the "BINGO!" number, you know the winner that explains all. But all I have been able to decipher is "V" means Flint plant, MI "0305" means March 5th but I can't seem to find what the "UXH" means. I believe it's a newer engine and everything I've found online ends around mid 80's. So what do you think?
UXH is no good. Sure it isn't UHX <TABLE width="100%" border=1><TBODY><TR><TD>[FONT=Arial, Helvetica, sans-serif]UHX[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]1981[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]350[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]con cab, a/t, A.I.R.[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]M LT9[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]165[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]4[/FONT]</TD><TD>[FONT=Arial, Helvetica, sans-serif]C-20 to 3500[/FONT]</TD></TR></TBODY></TABLE>
<TABLE width="100%" border=0><TBODY><TR><TD>Block casting # puts it in this range 1986-94 </TD><TD>14093638</TD><TD>350</TD></TR></TBODY></TABLE>
Yes newer 350 just by the 5.7 casting, but I am confused on the story ,it wouldnt work with the rear gear and only go 25MPH? that makes no sense at all .You would have to have like a 10.00 gear ratio for that to happen Id check that motor over very carefully before I used it
I dunno what kind of truck that was to do 25mph with a 350, even a worn one. There's a lot of biiiig moving style trucks running around with 350s. If the gears were truly the problem the 350 must've been replacing a turbine helicopter engine or something Good luck with the project.
Like you, I couldn't find the UXH suffix anywhere. The 14093638 tells you it's a '86 to '94 350. If the intake manifold to head bolts are all on the same plane, tell the parts guy it's a '86 Caprice. If the center four bolts manifold to head are on a different angle (canted) from the rest of the manifold to head bolts, tell the parts guy it's a '87 Caprice.
A 350 of than vintage should be machined in the valley for roller lifters and for the retainer behind the cam gear.Should be drilled for a fuel pump rod.Truck blocks came with flat tappets until maybe 96,car engine had the factory rollers.. However,some blocks might not be machined.
im still lost on the 25 MPH situation..care to fill us in on this? is this sucker running that bad? or is that what you were told?
If you can match it up with the head casting numbers............. towards the bottom of the page. http://www.cehighperformance.com/new_page_3.htm
I have, and can confirm, in a 90 chevy truck the fuel pump push rod hole is not machined, but it is prepped for a roller cam
I have one out of a '95 1 Ton van that has the fuel pump push rod hole machined. Go figure...... Oh yeah, my wife likes your signature. She's the office manager at a No Kill shelter.
As for what the guy told me about the truck they tried to put it into, they were trying to replace a diesel engine. The 350 didn't belong in that truck to begin with. I don't know what tranny they put into it with the 350 but that's what he said, after they swapped it with the diesel it wouldn't go above 25mph. I plan on rebuilding the whole think before I use it anyway, but wanted to try and do it myself to save cash. Might end up taking it to a shop and getting it bored. At any rate probably have them flush it and check for cracks and hopefully I can get the original application that way too. cb1... I'll double check on the UXH but I'm pretty sure that's what it is. The impression I got was it 90 or newer.
Most Chevy/GMC diesel trucks that came with a 6.2 have 3.73 or 4.11 gears. My new beater has a 350 with... 3.73 gears. I was doing 85 with it the other day on the interstate because I wasn't paying attention to how fast I was going. If it wouldn't go over 25 mph, it's probably because they blew the trans out with the torque of the diesel and were too dumb to know what was really wrong. I saw one diesel sell at an auction that they'd somehow cracked a chunk right out of the top of the trans case, it blew so badly. Trans was out and laying in the bed - Anything bigger than a 6.2 and the 350 would be a real bitch to bolt in in it's place - I'd compression test the motor, if that checks out look everything else over and run it - 350s are pretty tough.
That is the cast date on the block. There should be a arrow pointing to either one, two or three dots. That will tell you what shift it was cast on. On the back of the block the will be a symbol with either a CF or GM with another letter, that will give you the plant where the block was cast.
Not nessecarily. 5500+ chassis [think school bus] could be had with Detroit diesels or the 366-427 tall deck gas engines. These use "standard" chevy motor mounts and an adaptor that'll bolt the chevy pattern block to the S.A.E. bellhousing. If it was a 7000+ series chassis, and they removed a big [expensive] screamin' Jimmy, and tried to cheap it out with a 350 SBC, it's quite possible the 'lil chevy simply didn't have enough beans to get the job done. You got to remember that HP is a calculation based on torque that's measured at 5250 RPM, and most diesels red-line at 3000 rpm, and still make 3 or 4 times more torque than a gas burner. Think of all the hot-rod diesel P/U trucks running around that are making 1000 ft/lbs or more. So, maybe not a BS story. Diesel's are quite simply VERY different animals compared to gas burners.
Regarding it being an '86-'94 350, AFAIK all '86 had perimeter valve cover bolts and '87 up had center bolts. That might help some when you go to the parts store. Either way, it should have the one piece rear main seal. Regarding the 25 mph issue, I have been told that there can be problems when doing a diesel to gas swap on 80s Chevy pickups (they were Olds based, and use 700R4 transmissions, apparently) if you use the converter from the diesel on the gas engine because the diesel torque converter is intended to work through a different RPM range. Maybe that is related? Maybe the PO is just an idiot? Slonaker
yeah, that's the block casting date. Shift is not important, year is. All the later model blocks that were installed in a vehicle at the factory I've seen have two sets of numbers stamped on the front, one is the engine number which we've seen already, the other is the partial VIN, which hasn't been mentioned, and will tell you what it was installed in (carline, factory, year) If there is no partial VIN, it could be a replacement engine
cb, I double checked and it's definityly "UXH" I'm gonna go at it again this weekend and try to get some numbers off the intake and heads. I'll post them as soon as I can. Thanks for all the info so far
Well, that's certainly possible, I'll freely admit to knowing little to nothing about the big diesels, I just assumed that nothing was directly interchangable. FWIW, GM went to the 6.2 Detroit Diesel V8 for trucks in 1982, the Olds 5.7 was only used in cars after that. A diesel trans behind a 350 is going to feel like it has a shift kit because it will want to shift around 3000 RPM or so. The 6.2 maxes out around there, although it can run up to 3600 RPM (the one I have is governed there).
I got the partial vin off the pad it's "CLF142874" and the casting number on the intake is "14101074" Where are the casting numbers on the heads? Didn't see them out in the open are they under the headers or something? Also it has the 4 center bolt valve covers on it.
<TABLE width="100%" border=0><TBODY><TR><TD>[SIZE=-1]1976[/SIZE]</TD><TD>[SIZE=-1]CLF [/SIZE]</TD><TD>[SIZE=-1]350 [/SIZE]</TD><TD>[SIZE=-1]L65 [/SIZE]</TD><TD>[SIZE=-1]V [/SIZE]</TD><TD>[SIZE=-1]145 [/SIZE]</TD><TD>[SIZE=-1]2 [/SIZE]</TD><TD>[SIZE=-1]A B[/SIZE]</TD></TR><TR><TD>[SIZE=-1]1977[/SIZE]</TD><TD>[SIZE=-1]CLF [/SIZE]</TD><TD>[SIZE=-1]350 [/SIZE]</TD><TD>[SIZE=-1]a/t, Calif[/SIZE]</TD><TD>[SIZE=-1]X L82 [/SIZE]</TD><TD>[SIZE=-1]210 [/SIZE]</TD><TD>[SIZE=-1]4[/SIZE]</TD><TD>[SIZE=-1]Vette[/SIZE]</TD></TR></TBODY></TABLE>
I asked the question about the heads too quick, found the answer at www.yearone.com Ratmotor, do you have the link for the above info? It doesn't match with the years from the other numbers. seems like its a 1990 engine
C means Chevy truck, L is 1991, F is Flint I think that's what year L is....A is 1980, B is 1981, etc, so count from there. With the B 23 0 casting date, it should be 1990.