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Currently: sbe H/C LS2 (A6) making 479/418 to the tire. Looking to get in the mid 500's N/A. I believe a stroker motor will do it and looking for combo examples.
Who has stroked LS2 and:
What CI
What HP/TQ is it
Build list of your combo
Most important: Would you do it again?
Are you looking for a dyno figure or a specific performance goal ?
To me, no need to reinvent the wheel in regards to strokers........ a 4.0" stroke 427 engine will make mid 500's all day long with a proper cam and supporting mods.
Christopher (theSubFloor) has been running LS7 motors in all of his A6 cars, so I'd hit him up about what is required.
You want to go bigger than 427 ? Talk to Anthony and Erik over at HPR (Horse Power Research) about one of their 468 motors
Last edited by FNBADAZ06; Sep 3, 2018 at 09:59 AM.
I'm wanting more power but want to stay naturally aspirated. I like the idea of a supercharger but love the sound of a nice cam lope more. S/C cams just don't have the sound I want out my toy. My builder is hesitant to do a 427 stroker with my LS2 block due the sleeve length if I remember correctly, and I'd like to keep my block. He said mid 500's is very doable and I'm looking to see who else has done it and how.
Just remember that stroke lenght, and piston width goes hand in hand with the way the motor rev's.
On the LS7, you have wider piston verses stroke than say on the LS2, and the reason that the LS7 revs higher. Hence this was the trick for the 327 and 427 motor over the 350 and 454 that allow both vet motors to not only rev faster, but have higher rpms that produces more power as well.
Take it a step farther, stroking a 350 to 383 does pick up power over all, but you pick up power more down low to make the motor a torque type motor that does not want to rev up as fast instead.
So if you looking to pick HP alone, then such is easy with allowing the motor to rev higher isntead.
Take the Merc SB4 7.0 crate motor built on the LS7 block, and that N/a motor is making 750hp at 8K rpms.
I'm wanting more power but want to stay naturally aspirated. I like the idea of a supercharger but love the sound of a nice cam lope more. S/C cams just don't have the sound I want out my toy. My builder is hesitant to do a 427 stroker with my LS2 block due the sleeve length if I remember correctly, and I'd like to keep my block. He said mid 500's is very doable and I'm looking to see who else has done it and how.
when you say you like the cam of N/A sound better than a S/C cam what specific size cam lope “sound” are you referring to? Like a 110 LSA and under? My ZO6 has a larger cam than most use on F/I builds, you can use a larger cam on S/C cars if you do it right and make sure all the supporting components are in place, valve train wise and to handle the pressure and blow by. Prior owner who did the mods on my Z did not have it done correctly unfortunately and I’m re working it now, did have any major failures but I ended up going down a relatively long and expensive road I didn’t plan on. I’ve got idle and rev video of my car with a P1SC1 blower and a N/A cam 115+4 LSA 231/251 .660/.660 I’ll post them if you want to hear it.
when you say you like the cam of N/A sound better than a S/C cam what specific size cam lope “sound” are you referring to? Like a 110 LSA and under? My ZO6 has a larger cam than most use on F/I builds, you can use a larger cam on S/C cars if you do it right and make sure all the supporting components are in place, valve train wise and to handle the pressure and blow by. Prior owner who did the mods on my Z did not have it done correctly unfortunately and I’m re working it now, did have any major failures but I ended up going down a relatively long and expensive road I didn’t plan on. I’ve got idle and rev video of my car with a P1SC1 blower and a N/A cam 115+4 LSA 231/251 .660/.660 I’ll post them if you want to hear it.
Thank you. I'd love to hear a clip. Here's the cam card for it now. The stroker I want will have a better cam equal to the build but will have same sound. When I chose this one, I listened to many cam idle clips and the BTR Stage 3 was what I wanted.
[QUOTE=mbowers13;1597971720]Thank you. I'd love to hear a clip. Here's the cam card for it now. The stroker I want will have a better cam equal to the build but will have same sound. When I chose this one, I listened to many cam idle clips and the BTR Stage 3 was what I wanted.
[/QUOTE
yup that’s a big cam man! Lots of lift too, what springs did you go with? Lifters? Rockers? Pushrods? That cam needs a fair amount of supporting upgrades to the entire valve train that’s for sure.
yup that’s a big cam man! Lots of lift too, what springs did you go with? Lifters? Rockers? Pushrods? That cam needs a fair amount of supporting upgrades to the entire valve train that’s for sure.
Not entirely sure about the parts used. I know it was the right parts though. Year and a half later and still runs just as strong. 480 to the tire through an A6.
Thanks for posting. It does sound nice, but I'm looking for something a little different. Here's mine.
well after seeing the cam card I came to that conclusion lol. 110 center line that’s a big cam. Not sure how yours drives but I could see it being rowdy for sure.
Thanks for posting. It does sound nice, but I'm looking for something a little different. Here's mine.
audio wouldn’t play. I am curious as to how that big of a cam behaves, I’d have a hard time dealing with or accepting lots of surging and bucking or parking lot nightmares with such a small HP total, that’s just me though. I’d hate to have my vette put into the “Mustang” category.....I’ll explain.
Mustangs sound really good in my opinion and I think even mustang haters would agree, problem is they all sound good, that’s ones with just an exhaust or exhaust and headers and ones with extensive motor work that is actually fast. Most of the time when I hear mustangs(always hear them first) and I think damn that sounds good! Than I see it and see it and keep seeing it because it does sound great but it’s so slow it takes minutes before it out of eyesight 🤣
not suggesting a 500rwhp vette is in that category because it’s definitely not, that’s a fast car for sure. For me to accept poor manners because of my cam choice I’d want 600rwhp+ N/A
audio wouldn’t play. I am curious as to how that big of a cam behaves, I’d have a hard time dealing with or accepting lots of surging and bucking or parking lot nightmares with such a small HP total, that’s just me though. I’d hate to have my vette put into the “Mustang” category.....I’ll explain.
Mustangs sound really good in my opinion and I think even mustang haters would agree, problem is they all sound good, that’s ones with just an exhaust or exhaust and headers and ones with extensive motor work that is actually fast. Most of the time when I hear mustangs(always hear them first) and I think damn that sounds good! Than I see it and see it and keep seeing it because it does sound great but it’s so slow it takes minutes before it out of eyesight 🤣
not suggesting a 500rwhp vette is in that category because it’s definitely not, that’s a fast car for sure. For me to accept poor manners because of my cam choice I’d want 600rwhp+ N/A
I appreciate your reply. I know exactly what you mean on the Mustang sound, and I agree. What would you suggest to get 600whp N/A? I don't have an unlimited budget but I do have some breathing room. I have a 6L80 so I know that will have to be addressed if I get too wild with it.
As far as how it behaves, it's nice. Drives great at any speed (of course I have a 3200 stall as well).
All I can suggest is look into the shops/engine builders that are constantly putting out N/A cars with those numbers, there is a ton of them on this forum or have YouTube channels....RPM,CPR,Vengeance,Mamo,TSP I’m sure AHP could get you close as well. What I learned from this forum is 600+ rwhp N/A isn’t cheap, it’s usually going to have some sort of effect on drivability and as soon as you get in the 600 area even small increases are going to cost a lot.
Let's talk stroker motors
