Video of our LSX on the Dyno
06-20-2007, 07:27 AM
#62
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Originally Posted by 427
I will try that Brad, but not sure it will work!
Kurt
Kurt
lol i know
robin accually just called and said he was sending me the one in the video, so i will use one in my vett, one in my Z
Robin, this is a solid roller im sure, is it stock size lifters and what are the specs on the cam?
im going solid roller this winter i think, it must be worth atleast 50 rwhp
06-20-2007, 11:46 AM
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All 4 of them are turbo engines, nothing with nitrous!!! Sorry.
Kurt
Kurt
Originally Posted by Noyzee
kurt, you can just give me yours when its done, im sure it will be bad ***, and who ever it is for wont mind, just tell them you gave it to me. 
06-21-2007, 06:46 AM
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The engine is a 4.185 bore and 4.125 stroke 454.
The cam is Lunati 284/304@ .050. It has a 110 Lobe Sep
It has a lobe lift of .529 which would give a theoretical .980 lift at the valve with the Jesel 1.85 ratio rocker. Measured lift at the valve with lash and deflection is an actual .960
The lifters are Jesel .941 solid rollers (of course)
The cam was installed 1.5 degrees retarded. Once we spray this thing it will move the powerband down. The intake, heads, cam and headers were optimized with Nitrous in mind.
We feel had this engine been optimized for NA only we could have been just under 1000 Horsepower.
Thanks for the comments guys.
Robin
The cam is Lunati 284/304@ .050. It has a 110 Lobe Sep
It has a lobe lift of .529 which would give a theoretical .980 lift at the valve with the Jesel 1.85 ratio rocker. Measured lift at the valve with lash and deflection is an actual .960
The lifters are Jesel .941 solid rollers (of course)
The cam was installed 1.5 degrees retarded. Once we spray this thing it will move the powerband down. The intake, heads, cam and headers were optimized with Nitrous in mind.
We feel had this engine been optimized for NA only we could have been just under 1000 Horsepower.
Thanks for the comments guys.
Robin
Last edited by Robin L; 06-21-2007 at 07:11 AM.
06-21-2007, 01:09 PM
#70
Originally Posted by Robin L
The engine is a 4.185 bore and 4.125 stroke 454.
The cam is Lunati 284/304@ .050. It has a 110 Lobe Sep
It has a lobe lift of .529 which would give a theoretical .980 lift at the valve with the Jesel 1.85 ratio rocker. Measured lift at the valve with lash and deflection is an actual .960
The lifters are Jesel .941 solid rollers (of course)
The cam was installed 1.5 degrees retarded. Once we spray this thing it will move the powerband down. The intake, heads, cam and headers were optimized with Nitrous in mind.
We feel had this engine been optimized for NA only we could have been just under 1000 Horsepower.
Thanks for the comments guys.
Robin
The cam is Lunati 284/304@ .050. It has a 110 Lobe Sep
It has a lobe lift of .529 which would give a theoretical .980 lift at the valve with the Jesel 1.85 ratio rocker. Measured lift at the valve with lash and deflection is an actual .960
The lifters are Jesel .941 solid rollers (of course)
The cam was installed 1.5 degrees retarded. Once we spray this thing it will move the powerband down. The intake, heads, cam and headers were optimized with Nitrous in mind.
We feel had this engine been optimized for NA only we could have been just under 1000 Horsepower.
Thanks for the comments guys.
Robin
How much compression do you have in this engine? And how much would have run N/A?
06-22-2007, 04:14 AM
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I'll try to sum up Robin's posts' between this thread and the first thread he made "Our LSX is done" https://ls1tech.com/forums/generation-iv-internal-engine/729737-our-lsx-done.html
The Motor is a LSX 454 (4.185" bore and 4.125" Stroke)
The cam is Lunati 284/304@ .050. It has a 110 Lobe Sep
It has a lobe lift of .529 which would give a theoretical .980 lift at the valve with the Jesel 1.85 ratio rocker. Measured lift at the valve with lash and deflection is an actual .960
The cam was installed 1.5 degrees retarded for the Dyno run (930hp and 666tq)
The lifters are Jesel .941 solid rollers (of course)
The Heads are GMPP C5R Heads Prepped by Don West and the compression ratio is 14.5 to 1.
Other Goodies are Diamond Pistons and GRP Aluminum Rods.
Robin has not listed up the spec's on the heads other then them being C5R heads.
The Motor is a LSX 454 (4.185" bore and 4.125" Stroke)
The cam is Lunati 284/304@ .050. It has a 110 Lobe Sep
It has a lobe lift of .529 which would give a theoretical .980 lift at the valve with the Jesel 1.85 ratio rocker. Measured lift at the valve with lash and deflection is an actual .960
The cam was installed 1.5 degrees retarded for the Dyno run (930hp and 666tq)
The lifters are Jesel .941 solid rollers (of course)
The Heads are GMPP C5R Heads Prepped by Don West and the compression ratio is 14.5 to 1.
Other Goodies are Diamond Pistons and GRP Aluminum Rods.
Robin has not listed up the spec's on the heads other then them being C5R heads.
06-22-2007, 11:36 AM
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Robin i see in your location that your in Galesburg? I'm about 15 minutes down 74 in Brimfield. That Nova's going to be a beast! When GM is all done with the testing and your tired of it i'll have a trailer that would love to take it off your hands, and i could be there in minutes! I'd hate to see the price tag tho.
Can't wait to see how she runs!!
06-23-2007, 07:31 PM
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Robin I wanted to know if 110° Lobe Sep. was right if so I'm just curious why your using a 110° Lobe Sep. Cam with this much Nitrous? 
This Cam looks more like one for a N/A Engine!
This Cam looks more like one for a N/A Engine!
06-23-2007, 10:19 PM
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Hey guys
Sorry I just got in from the garage. The cross member has been clearanced for the oil pump and the engine is in the car. Now if I can get the starter to work I will be almost ready to test.
I hope to be able to make some shake down passes next weekend. I may rent the the track if we miss the weekend.
Terry, I was in favor of a wider lobe sep based on what I had heard from other Nitrous users. Thom Bates and Dale Metlika felt that a 110 lobe sep would give me a more "peaky" power band. They also felt that the 110 would be less volitile on cylinder pressure with the nitrous.
Since I have 5 gears as opposed to the rest of the class with 2 gears I can run with a narrow powerband. As with any combination only testing will tell.
I have a wider lobe sep cam in the works so I should be alble to test that when we get engine #2 on the dyno.
Valve sizes are 2.220 and 1.65. Really I hate to talk about flow numbers because they are so relative. There is a lot of variance with flow benches and too many people live by the numbers. Really these heads were in the low 400 high 300 range on the intake and about 265 on the exhaust if I rememeber. Again we have had engines make more power with heads that don't flow as well as others. WIth the nitrous we do try to help out the exhaust as much as possible.
Robin
Sorry I just got in from the garage. The cross member has been clearanced for the oil pump and the engine is in the car. Now if I can get the starter to work I will be almost ready to test.
I hope to be able to make some shake down passes next weekend. I may rent the the track if we miss the weekend.
Terry, I was in favor of a wider lobe sep based on what I had heard from other Nitrous users. Thom Bates and Dale Metlika felt that a 110 lobe sep would give me a more "peaky" power band. They also felt that the 110 would be less volitile on cylinder pressure with the nitrous.
Since I have 5 gears as opposed to the rest of the class with 2 gears I can run with a narrow powerband. As with any combination only testing will tell.
I have a wider lobe sep cam in the works so I should be alble to test that when we get engine #2 on the dyno.
Valve sizes are 2.220 and 1.65. Really I hate to talk about flow numbers because they are so relative. There is a lot of variance with flow benches and too many people live by the numbers. Really these heads were in the low 400 high 300 range on the intake and about 265 on the exhaust if I rememeber. Again we have had engines make more power with heads that don't flow as well as others. WIth the nitrous we do try to help out the exhaust as much as possible.
Robin
06-23-2007, 10:30 PM
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Very nice Robin!! Best of luck to you!!! I am hoping that my project will turn out as good as yours....Perhaps you'd be willing to share some insight to my engine builder since I'm building a max effort 460 based on the LSX platform.....