455 ci LSX, has it been done?
12-29-2006, 09:43 AM
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455 ci LSX, has it been done? I have been kicking around the idea of putting an LS engine in my project buick. I had always planned to do a buick 455 w aluminum heads. I've also considered an LS1 (cause I love them) and they are light/cheap-per hp/ and have great fi. The ultimate would be if I could build an LS based 455. I am not made of $, is this something that could be created at a reasoable price?
I want to shoot for the Buick 455s bore and stroke: 4.312 Bore / 3.90 Stroke.
The LS7 is 4.125 bore, so does that mean I need an iron LSX to bore out?
Is there a 3.90 stroke crank in production?
It would be great if I could use off the shelf parts to save $.
What do you guys think?
I want to shoot for the Buick 455s bore and stroke: 4.312 Bore / 3.90 Stroke.
The LS7 is 4.125 bore, so does that mean I need an iron LSX to bore out?
Is there a 3.90 stroke crank in production?
It would be great if I could use off the shelf parts to save $.
What do you guys think?
12-29-2006, 10:10 AM
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The new LSx block comes out in march 07. it is capable of 511 CI, it can take a up to a 4.25 bore and a 4.5 stroke. Its a really good strong block too. But its like 2K for the block.
12-29-2006, 10:38 AM
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455 Ls1 Just completed a 455 LS1 build.
Not cheap.
To do it right, plan on spending $15k
We did 4.186 b X 4.125 S
The block had to be resleeved.
You will need
Crank, pistons, heads, custom cam, headers, injectors, fuel pump, rods, rings, pins, intake, TB, studs, custom tune, 12 bolt rear,,,,,etc etc.
By the way, we put this motor into a 02 m6 TransAm with 3.73 rear, car ran 10.92 @ 127 with closed exhaust, street tires, full tank of gasa and granny shifting.
It was worth the $$$.
If you are serious contact Steve @ R.E.D. and PM me for details..
Bob
Not cheap.
To do it right, plan on spending $15k
We did 4.186 b X 4.125 S
The block had to be resleeved.
You will need
Crank, pistons, heads, custom cam, headers, injectors, fuel pump, rods, rings, pins, intake, TB, studs, custom tune, 12 bolt rear,,,,,etc etc.
By the way, we put this motor into a 02 m6 TransAm with 3.73 rear, car ran 10.92 @ 127 with closed exhaust, street tires, full tank of gasa and granny shifting.
It was worth the $$$.
If you are serious contact Steve @ R.E.D. and PM me for details..
Bob
12-29-2006, 06:31 PM
#6
I've got a 454 going into my 02" Camaro. Your not going to be able to achive the type of bore your looking at due to the 4.400" bore spacing on these blocks. That's why the original 455 is a BIG block. You can however, achieve the cubic inches. Though it won't be cheap, it can be done. I went with the sleeved LS2 block (4.155" bore) and a Lunati 4.185" stroke crank. Th elong stroke cranks aren't cheap, about $2000, and the sleeved block is another $3k. Then you needs heads, cam, intake, headers and so on to support such a large motor. I've surpassed $20k in this build and the car still has no exaust from the headers back, nor is it tuned.
12-29-2006, 07:01 PM
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Although i am unsure of the vehicle you are putting this into, i would consider a Buick turbo V6. 700 HP can easily be reached in streetable applications. This is using all aftermarket parts (Block, rotating assembly, etc...).
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12-29-2006, 07:20 PM
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Originally Posted by subtlez28
I have been kicking around the idea of putting an LS engine in my project buick. I had always planned to do a buick 455 w aluminum heads. I've also considered an LS1 (cause I love them) and they are light/cheap-per hp/ and have great fi. The ultimate would be if I could build an LS based 455. I am not made of $, is this something that could be created at a reasoable price?
I want to shoot for the Buick 455s bore and stroke: 4.312 Bore / 3.90 Stroke.
The LS7 is 4.125 bore, so does that mean I need an iron LSX to bore out?
Is there a 3.90 stroke crank in production?
It would be great if I could use off the shelf parts to save $.
What do you guys think?
I want to shoot for the Buick 455s bore and stroke: 4.312 Bore / 3.90 Stroke.
The LS7 is 4.125 bore, so does that mean I need an iron LSX to bore out?
Is there a 3.90 stroke crank in production?
It would be great if I could use off the shelf parts to save $.
What do you guys think?
12-29-2006, 07:53 PM
#9
Originally Posted by Trickcr
Although i am unsure of the vehicle you are putting this into, i would consider a Buick turbo V6. 700 HP can easily be reached in streetable applications. This is using all aftermarket parts (Block, rotating assembly, etc...).
12-29-2006, 09:47 PM
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I'm all for turbos, and 3.8 turbo GN and T-types R cool. But going down in cylinders or displacement is not an option. Turbos on a V-8...another Idea I've kicked around!
Car is a 73 Buick Century 2dr. My 1st car. Only had 38,000 miles when I bought it in 1996. Built to handle. Custom front end to delete big, ugly, heavy crash bumper. Haven't scaled it but its gotta b 3800-4000 pounds. Plan to back the new motor w a t56.
Oh, and I put 2002 SS 10-spoke take offs from SLP on it in 2002...cause I couldn't justify the huge insurance on a Z28 then.
Car is a 73 Buick Century 2dr. My 1st car. Only had 38,000 miles when I bought it in 1996. Built to handle. Custom front end to delete big, ugly, heavy crash bumper. Haven't scaled it but its gotta b 3800-4000 pounds. Plan to back the new motor w a t56.
Oh, and I put 2002 SS 10-spoke take offs from SLP on it in 2002...cause I couldn't justify the huge insurance on a Z28 then.
12-30-2006, 10:20 AM
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Originally Posted by texada
If you wait another 6 months you will be abale to build larger than a 455 for probally 10k
12-30-2006, 01:11 PM
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Originally Posted by MiketurboLS1
To actually have that LSX block bored and stroked, and running in a car its gonna cost you double that. You looking at close to 10K for just a long block. The block alone will be selling between 1800-2000 bucks, thats all before machine work, rotating assembly, valvetrain, heads, intake exhaust, ecm. big money. personally i would go with a forged LS1 with FI, cant beat it.
12-30-2006, 08:19 PM
#15
Originally Posted by texada
The LSX block is only $5-6 hundred dollars more than a 6.2 liter block. I recieved a quote for a complete shortblock from TSP for $4700.00, This 418 block had custom pistoms just like the LSX block will have to have. Same parts! I guess if you go will all exotic parts yea, it will be 15k or higher. I have cash at hand waiting on this new LSX block and I will build this block on a budget with TSP's L92 heads and Intake. 4.25 bore with a 4.125 stroke. I know I will be more than happy with this combo.
12-31-2006, 12:22 AM
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Yeah, I just read the max bore even for a GMMP LSX is 4.25. I really do not want a super huge stroke just to get to the 455. My hopes were to have 455 ci w matching bore/strok as the Buick 455. I think this idea is a dead one for me. I do like what I've been reading about the L92. I think I gotta give up this 455 number.
