msbuckner97

I'm working an LT1 build for an S10. I'll preface this by saying that I bought it off ebay and the guy claimed it was a junkyard motor. It's got the 327 castings in the block so it's not an L99, but I'm beginning to doubt the claim that's it a Vette motor. It really won't matter, because I'm not going for 700 hp, and I'm completely redoing the top half, so most of the differences are moot.

However, the main caps are only two bolts. Here are three pictures; can anyone tell me if this is a Vette block?

Also, I haven't come across it yet, but don't 96 and 97 LT1s have a pickup on the crankshaft for crankshaft position for the OBD-II?

Thanks for any help folks!






Progress, albeit slow: s350.wordpress.com

duh

iTrader: (16)

looks like an earlier lt out of an f or b body......definitely not a vette motor

StealthFormula

iTrader: (35)

The 327 indicates it is an LT1 and being a 2-bolt main it indicates that it is then an f-body or b-body block.

RamAir95TA

iTrader: (2)

I was under the impression that the "327" marking indicated that it was an LT1 designation, not whether or not it was in a b, y, or f body.

If the VIN isn't too marred up, why don't you plug it in to a VIN decoder? The vin is located on the driver side of the block just above the oil filter where the block meets the bellhousing.

And it's quite possible that he refers to it as a "Vette" motor, as most uneducated motorheads often do.

96lt1m6

iTrader: (31)

327 denotes an Lt1 block for sure, weather its a Y,F,or a B body!

As stated those people always refer to a part for sale "CORVETTE" as if they just struck gold or something... besides i am 99.999% vettes only came with 4-bolt blocks i could be wrong however all the vettes i took apart in the 90s were 4-bolts......
There is a 91 blue corvette in houston that is the home of an Lb9 305tpi from a 91 z28....lol long story

StealthFormula

iTrader: (35)

That is correct.

gregrob

iTrader: (8)

I would beat someone in the face with a dead chicken if I bought a Vette and later discovered it was a 305 TPI

msbuckner97

DEFINITELY! I knew it was an LT1 before I counted out the cash; the only question now is what year, and how difficult it will be to get it converted to OBD-II. I'm hoping to plug directly into the S10 BCM and meet emissions with it.

Super sleuths, here you go. Let me know what you can figure out:

Big D Mcgee

All vettes had a 4 bolt main. Tried finding the casting numbers for you but couldn't find anything really specific.

Info i found listed all lt1's and lt4's, vette, camaro, impala, etc., with the same casting number for the block for years between 92 and 96. This was all I could find which isnt very helpful.

Maybe the head casting number will yield more specific information that you need.

96lt1m6

iTrader: (31)

Well it is a 2-bolt Lt1 i would say late 95 up to 97 because it has PM rods in there.....I say build that sucker, put it that S10 and have some fun!!!

stevo9389

it also has 2 knock sensors so you likely bought an impala ss motor. are you absolutely sure the heads are aluminum?

shbox

Although it won't tell you everything, here is the place people were telling you to check (not sure if cars other than f-bodies are the same). If it happens to start with a "2", you know it came from a Firebird.

1993 z28 f1

iTrader: (6)

Hey:

I am pretty sure 3 is/was Oldsmobile and probably came from a wagon. But I thought N were for 1992, P was 93 and O was a factory replacement and not a std year designator.

Dub

When In Doubt Do Without

msbuckner97

Thanks; I'll snap a picture tonight. I've still got the auto trans that came with it, and I remember seeing the matching numbers when they were on the crane before going into my truck bed.

Stevo: no, I'm not sure they're aluminum heads. They're pretty grimed up. Here's a pic while they were still on the motor. I'll try to get a couple more tonight and post them.



Again, not like it really matters; all the good bits are getting replaced/ported/modified anyway. I'm most frustrated by the idea of trying to go from OBD-I to OBD-II to make it talk to the truck. And the exact year/model of vehicle might help if I end up going to an aftermarket computer; I think someone suggested CPW.

msbuckner97

Oh yeah, one more thing. This ^^^ is going to happen regardless, don't worry!

duh

iTrader: (16)

you have a motor out of a b body.....caprice, roadmaster, etc. Those would be cast iron heads. Not the end of the world, and a lot of potential.....just not the "best" starting point. My guess would be a 95 but without actual numbers there is no way to tell.

msbuckner97

Anything special I could do to get it back up to the "best" starting point? The heads are going to be replaced, so that's not an issue. 4 bolt mains aren't gonna happen, but shouldn't bother me. I'm only shooting for 400 or so, and then maybe adding 5 psi or a 150 shot in a few years. (this last part is total speculation right now; I've got to get the thing running first.)

Any advice on the computer?

duh

iTrader: (16)

well since you don't need the 4 bolt mains and you're replacing the heads.....you don't need to be at the best starting point. You've got it covered. You've got the bases down so you should be good.

camaro would probably be your best bet, but it depends on the year of the s10. If it's obd2, go with obd2 and it'll make it easier to pass emissions.

MasterTomos

iTrader: (15)

Heads cam and intake will take you up to 400whp if you do the right combo.

I'd find some lower milage stock heads, and send the Intake/Heads to lloyd elliot and have him do a Lt1 LE2 package on it and get a custom ground cam from him. These usually make around 375-410Hp or so I'm told, and it only costs $1650 last I checked...

tom falco

THERE IS NOTHING WRONG WITH 2 BOLT MAINS. In the old days we went fast with them. I have ran well into the nines with 2 bolt mains in the old days.