Supercharger power gains on an LS1
Discussion
I have modified my CV8 VZ with a Wortec cat-back and headers. I am very happy with the results. Pre-headers it was putting out 320RWHP. I understand that remapping after the headers will bring in some more power maybe 20RWHP. I am now at the stage of deciding what the next engine/powertrain mod will be.
It seems a basic non-intercooled supercharger is circa £6000. My question is what extra power over and above what can be achieved with what I alread have can I expect?
In summary what RWHP can I expect from a non-intercooled supercharger on a standard LS1 in a VZ CV8?
If the £/bhp is too low then I may decide to continue with the idea of replacing the diff with a 3.91 for the extra acceleration I am looking for.
It seems a basic non-intercooled supercharger is circa £6000. My question is what extra power over and above what can be achieved with what I alread have can I expect?
In summary what RWHP can I expect from a non-intercooled supercharger on a standard LS1 in a VZ CV8?
If the £/bhp is too low then I may decide to continue with the idea of replacing the diff with a 3.91 for the extra acceleration I am looking for.
I was pretty disappointed with the performance of the orginal Vortech V2 on my HSV. It was non intercooled @ 7psi. These really do need a decent intercooler despite what you may get told, and subsequently I am in the process of re-engineering the whole set-up. technically the Vortech chargers look an excellent option so I am persevering with them. Time will tell, but Stevie's seems to go alright LOL!
I have the same car as you. With a wortec cat back and Maggie supercharger it made 511fwhp but more significant was the 585lbs torque between 2000-5500 rpm. It makes a MASSIVE difference to the feel of the car.
Lucky for you my supercharger is now for sale, intercooled and ready to bolt on. It's also going for a lot less than the 5-6k you mention. 4k should secure it although it will need fitting and setting up. I suggest you talk to Mark at RapidGB for details.
Lucky for you my supercharger is now for sale, intercooled and ready to bolt on. It's also going for a lot less than the 5-6k you mention. 4k should secure it although it will need fitting and setting up. I suggest you talk to Mark at RapidGB for details.
I have an LS1 with intercooled Vortec V2 / headers / exhaust etc - makes about 380rwhp on Rapids dyno and a bit less on Surrey Rolling Road Dyno.
However you could get more depending on the philsophy of who does the mapping (do you set the car up for the dyno or the road?)and how close to the edge you want to go.
My car was mapped by wortec (on the road) for driveability and day to day use.It runs perfectly at any temp and with any petrol. Its certainly a big improvement on the old LSV / Vortec set-up.
Mark (Rapid) said that on the dyno mine was overfuelling plus running a very low boost. He felt another 40hp should easily be achievable. This looks feasible based on the power curves he showed me from other cars of similar spec.
I had the opportunity to drive an NA LS2 with a similar rwbhp recently and my sc set-up definately felt stronger in the mid range.
However you could get more depending on the philsophy of who does the mapping (do you set the car up for the dyno or the road?)and how close to the edge you want to go.
My car was mapped by wortec (on the road) for driveability and day to day use.It runs perfectly at any temp and with any petrol. Its certainly a big improvement on the old LSV / Vortec set-up.
Mark (Rapid) said that on the dyno mine was overfuelling plus running a very low boost. He felt another 40hp should easily be achievable. This looks feasible based on the power curves he showed me from other cars of similar spec.
I had the opportunity to drive an NA LS2 with a similar rwbhp recently and my sc set-up definately felt stronger in the mid range.
Ah definitely... have been giving some serious thought on how to make a supercharger without it costing the earth...
Unfortunately, whenever you compress air, it creates heat. So far the design thoughts, are that for cooling that you have oil through the middle of the shafts. Oil, because it is good at carrying heat away. I think also, that the cost is because each one is one single piece. You could design it so that it is made of several pieces, ie, offset of a common shape, as you go down the shaft, and tie them together somehow. Or, you could do a turbine type of design, that would be a little more complicated..
I think another major thing is making it light enough, so that you don't have energy wasted in wind up. Have a bit more research to do, to see how much heat is generated by the compression. I don't know that you would get away with using high temperature plastics, without a way of getting the heat out of the system.
Unfortunately, whenever you compress air, it creates heat. So far the design thoughts, are that for cooling that you have oil through the middle of the shafts. Oil, because it is good at carrying heat away. I think also, that the cost is because each one is one single piece. You could design it so that it is made of several pieces, ie, offset of a common shape, as you go down the shaft, and tie them together somehow. Or, you could do a turbine type of design, that would be a little more complicated..
I think another major thing is making it light enough, so that you don't have energy wasted in wind up. Have a bit more research to do, to see how much heat is generated by the compression. I don't know that you would get away with using high temperature plastics, without a way of getting the heat out of the system.
ringram said:
Yes, especially when you can get a forged engine for the same price, which you need if you want any decent amount of power.
But you can't though can you ? You said your engine was $14K which is about £10K (now), if you sell your engine for a couple of grand and then pay for install of new engine and setting up, etc, you must be back up to about the 10K mark ?True, but I went for the top of the line.
A 416 would cost substantially less. Or even a 427 being an LS3 block with a 4.125 stroke as per Tinker's engine with L92 heads. He put down over 480rwhp IIRC.
His would have cost less than mine. You just need to do some research.
http://www.sdparts.com/catalog/lsgeniiigenivperfor...
http://www.ls1tech.com/forums/sponsor-sales-specia...
$6500USD aka £3400 would get you a full 427 and L92 heads/intake, you might need a little more bits and pieces, but you get the picture.
A 416 would cost substantially less. Or even a 427 being an LS3 block with a 4.125 stroke as per Tinker's engine with L92 heads. He put down over 480rwhp IIRC.
His would have cost less than mine. You just need to do some research.
http://www.sdparts.com/catalog/lsgeniiigenivperfor...
http://www.ls1tech.com/forums/sponsor-sales-specia...
$6500USD aka £3400 would get you a full 427 and L92 heads/intake, you might need a little more bits and pieces, but you get the picture.
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