Engine SwapEverything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.
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I have a question on how to tell if the LB9 engine block, I brought is a true LB9 engine block. I brought a complete LB9 engine. Its from a 1991 IROC with 40 thousand miles on it. It has the water pump install. It also has a complete TPI set-up also. It has the MAP Solenoid on the Plunem that is a factory set-up.
So here is where I have a problem with what I brought after getting home and finding this web site here that has all this imformation that can help me. I'm hoping the shop did not not pull a fast one on me. The engine was over spray black again to make it look new. After cleaning it I found writing on the oil pan saying its a 1991 Chevy Pick-up 1500. The whole TPI set-up looks really clean like almost new or steam cleaned. The paper work match what I thought I brought
Okay here is what listed on my block. Right front below the right head is a boss with this number grouping as it is.
V O 7 2 6 B L J
1 V V 1 1 1 4 9 7 5
Center Block Rear below Distributor on the flange
14093627
Left Rear next to Head Flange
G139
GM 5.0 LG
SGI
I hoping that I have what I was sold to be correct as a LB9 engine. Anyone can help or Go to the dealer for the low down.
Did they tell you it was from a 91 IROC? Kinda weird since they stopped production in '90. If thats what they told you then I would be weary of what other lies they told you. Gotta watch out for shops like this. Always good to bring a freind with you who knows what he/she is talking about.
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1985 Trans Am 361ci - Original 305 TPI, Power Everything, T-Tops, 4 Wheel Disc Brakes, Rebuilt '88 Corvette 350, Isky 270 Hydraulic Cam, Hooker LT's, True Dual Exhaust w/ Moroso Spiral Flow Mufflers, WC T-5, Borg Warner 9 Bolt w/ 3.27 Gears, Glasstek 4" Cowl Hood
A LB9 is the RPO for a 5.0 TPI engine option in both the Camaro/Firebird. The LB9 used the same GM 5.0 block casting as in other carlines. The Block is not special to 3rd Gen Cars.
I think, since the L03 and LB9 are both 305 blocks, they will have the same markings. The difference was in the other parts, the blocks were the same. Just like the LG4 and L69 blocks were the same.
