SBC 1-piece rear seal crank in LT1 block?
#1
SBC 1-piece rear seal crank in LT1 block?
what i know it will fit, am i correct?
i'm trying to find a budget 396 kit (3.875" crank, 6.0" rods, 11.5:1 compression
4.030" pistons) that i want to install in my 1996 impala SS. i don't care too much about if the crank or pistons are forged or not but i want the kit to be in the $700-1000 range balanced and 11.5:1 compression pistons. i don't intend to use nitrous.
let me see what you think.
thanks.
i'm trying to find a budget 396 kit (3.875" crank, 6.0" rods, 11.5:1 compression
4.030" pistons) that i want to install in my 1996 impala SS. i don't care too much about if the crank or pistons are forged or not but i want the kit to be in the $700-1000 range balanced and 11.5:1 compression pistons. i don't intend to use nitrous.
let me see what you think.
thanks.
#2
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Yea, we share the same rotating assembly as the GEN I.
Don't know if the block has to be clearanced for the longer stroke or not. I thought they did on GEN I, but might have redesigned that bit in the block too.
Don't know if the block has to be clearanced for the longer stroke or not. I thought they did on GEN I, but might have redesigned that bit in the block too.
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what i know it will fit, am i correct?
i'm trying to find a budget 396 kit (3.875" crank, 6.0" rods, 11.5:1 compression
4.030" pistons) that i want to install in my 1996 impala SS. i don't care too much about if the crank or pistons are forged or not but i want the kit to be in the $700-1000 range balanced and 11.5:1 compression pistons. i don't intend to use nitrous.
let me see what you think.
thanks.
i'm trying to find a budget 396 kit (3.875" crank, 6.0" rods, 11.5:1 compression
4.030" pistons) that i want to install in my 1996 impala SS. i don't care too much about if the crank or pistons are forged or not but i want the kit to be in the $700-1000 range balanced and 11.5:1 compression pistons. i don't intend to use nitrous.
let me see what you think.
thanks.
Do you have heads and valvetrain ready? A 396 on stock heads and cam will be an absolute dog. What else do you have done?
Pistons and rods will work from a Gen I, but typically Gen IIs use a 2-piece rear main seal. LT1s use a one piece, so no, we do not share the same rotating assembly exactly, as you need a crank designed for a one-piece rear main seal. Not to mention, all stroker motors require clearancing of the block.
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Pistons and rods will work from a Gen I, but typically Gen IIs use a 2-piece rear main seal. LT1s use a one piece, so no, we do not share the same rotating assembly, as you need a crank designed for a one-piece rear main seal. Not to mention, all stroker motors require clearancing of the block.
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If using a 2-piece crank then you would have to get an adapter for the seal, you would have to use a Gen I flywheel and clutch. I was exploring doing this as well when FedEx lost my crank and I was waiting months before it finally arrived, but was told over and over the hassle just isn't worth it.
Contrary to popular believe the machine work for a 396 is really no different than a 383. The introduction to the GenII was the LT1. Not the 1-piece main seal.
Contrary to popular believe the machine work for a 396 is really no different than a 383. The introduction to the GenII was the LT1. Not the 1-piece main seal.
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The LTX motors are GEN II. I have never seen any small block with conventional cooling listed as a GEN II in GM literature. The Vortecs came out in 1996 with a lot of GEN II technology. Please post up any GM info that you have that lists conventional small blocks as GEN II.
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That's my understanding as well, 86+ is GEN I with the exception being LT1s. I've actually not heard of any of GMs other 8s being a GEN II, even those 96+. So Paul, I'm not sure where you had heard of 86+ being GEN II (at the least up to 96).
I know Wiki isn't the be-all end-all for info but:
-Chevrolet's small-block V8 is not a single engine but a series of famous automobile engines built on the same basic small (for a V-8) engine block. Retroactively referred to as the "Generation I" small-block, it is distinct from subsequent GM "Generation II" LT and "Generation III" LE engines.
-Finally superseded by GM's Generation II LT
-Confusion with LT and LE engines
The original Chevrolet-designed small-block is a specific family of engines manufacturerd originally in 1955 and installed as production powerplants by GM for 48 years.
...<snip>...
* For more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system, see the GM LT engine.
This last line on the page I think is key though....
-1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1, resulting in significant power increases. The intake manifold bolt pattern was also changed from four bolts per cylinder head instead of the traditional six.
Now I didn't post all that in the "I told you so" tone, as I know it will come across like :\ I just went to Wiki and noticed a lot of info that doesn't match up with what you said, and that's the only reason I posted it. Previous to going to Wiki all I was going to post was above the "be-all end-all" line.
I know Wiki isn't the be-all end-all for info but:
-Chevrolet's small-block V8 is not a single engine but a series of famous automobile engines built on the same basic small (for a V-8) engine block. Retroactively referred to as the "Generation I" small-block, it is distinct from subsequent GM "Generation II" LT and "Generation III" LE engines.
-Finally superseded by GM's Generation II LT
-Confusion with LT and LE engines
The original Chevrolet-designed small-block is a specific family of engines manufacturerd originally in 1955 and installed as production powerplants by GM for 48 years.
...<snip>...
* For more information on the Generation II small-block V8s, which differ mainly in their reverse-flow cooling system, see the GM LT engine.
This last line on the page I think is key though....
-1996 - This was the last change for the Generation I engine, and continued through the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using improved ports and combustion chambers similar to those in the Generation II LT1, resulting in significant power increases. The intake manifold bolt pattern was also changed from four bolts per cylinder head instead of the traditional six.
Now I didn't post all that in the "I told you so" tone, as I know it will come across like :\ I just went to Wiki and noticed a lot of info that doesn't match up with what you said, and that's the only reason I posted it. Previous to going to Wiki all I was going to post was above the "be-all end-all" line.