Best cam choice
Thread Starter
Intermediate
Joined: Dec 2021
Posts: 48
Likes: 1
Best cam choice
Have an ls3 with A&A supercharger v3ti, headers, and e85 with the 6l80 with a 3600-3800 circle d triple disc. Made 635whp reving up to 6200-6300 with a 3.4 pulley
looking to get the most I can get out of a cam. Willing to sacrifice drivability to get the most. Would also prefer a nice loud chop if possible. I dig race every once in a while but mostly do roll racing. What would be the best cam to go with? So far I’ve talked to BTR and they recommended their fairly new red hot cam. I also talked to GPI and they recommend their ss3. Can’t find much on either of them which a supercharger setup. Which one would be better out of the 2 and why? Is there better options other than those? What do you guys recommend or have and how do you like it.
looking to get the most I can get out of a cam. Willing to sacrifice drivability to get the most. Would also prefer a nice loud chop if possible. I dig race every once in a while but mostly do roll racing. What would be the best cam to go with? So far I’ve talked to BTR and they recommended their fairly new red hot cam. I also talked to GPI and they recommend their ss3. Can’t find much on either of them which a supercharger setup. Which one would be better out of the 2 and why? Is there better options other than those? What do you guys recommend or have and how do you like it.
Safety Car
Joined: May 2016
Posts: 4,662
Likes: 1,846
From: Erlanger, Kentucky
Racer
Joined: Oct 2018
Posts: 464
Likes: 155
From: ATX
Have an ls3 with A&A supercharger v3ti, headers, and e85 with the 6l80 with a 3600-3800 circle d triple disc. Made 635whp reving up to 6200-6300 with a 3.4 pulley
looking to get the most I can get out of a cam. Willing to sacrifice drivability to get the most. Would also prefer a nice loud chop if possible. I dig race every once in a while but mostly do roll racing. What would be the best cam to go with? So far I’ve talked to BTR and they recommended their fairly new red hot cam. I also talked to GPI and they recommend their ss3. Can’t find much on either of them which a supercharger setup. Which one would be better out of the 2 and why? Is there better options other than those? What do you guys recommend or have and how do you like it.
looking to get the most I can get out of a cam. Willing to sacrifice drivability to get the most. Would also prefer a nice loud chop if possible. I dig race every once in a while but mostly do roll racing. What would be the best cam to go with? So far I’ve talked to BTR and they recommended their fairly new red hot cam. I also talked to GPI and they recommend their ss3. Can’t find much on either of them which a supercharger setup. Which one would be better out of the 2 and why? Is there better options other than those? What do you guys recommend or have and how do you like it.
I would recommend a cam that peaks 6200-6400rpm and pulley that unit to 3.47/10%. Then shift at 6500rpm. That will **** that blower off making mad low-mid range. That unit really isn't setup to turn rpm and stay alive.
Instructor
Joined: Aug 2021
Posts: 140
Likes: 11
From: Chicago
Your limits will be the blower and over spinning. So keep that in mind when selecting a cam vs rpm vs impeller speed. A big cam will want to turn rpm which will make you go to a larger pulley to slow the blower down so you can rev it without tearing up the unit.. You will suffer everywhere to get some rpm.
I would recommend a cam that peaks 6200-6400rpm and pulley that unit to 3.47/10%. Then shift at 6500rpm. That will **** that blower off making mad low-mid range. That unit really isn't setup to turn rpm and stay alive.
I would recommend a cam that peaks 6200-6400rpm and pulley that unit to 3.47/10%. Then shift at 6500rpm. That will **** that blower off making mad low-mid range. That unit really isn't setup to turn rpm and stay alive.
Safety Car
Joined: Oct 2007
Posts: 4,222
Likes: 1,077
From: South Florida
The blower limits power, not the cam. Increasing lift will reduce reliability and stability and longevity of the valve train. Increasing the duration of the cam will decrease low rpm torque and make the car feel slower at low rpm without a properly setup converter/gear/tire. It will also make the engine breath more at top RPM forcing you to rev the engine higher and causing boost to drop given the same blower drive rate, which is not necessarily a good thing for a centrifugal compressor wheel which generally flow more and have wider efficiency window at higher pressure ratios.
Don't get me wrong, I always put an aftermarket cam in my engines for reasons. But I do it myself and I've been doing it for 27 years, and those reasons are not for power purposes or making the vehicle faster. Its more for linearity of torque curve and tuning reasons (it makes the VE table flatter and limits low rpm cylinder pressure which helps with reliability on gasoline which is important if you are using cheap gasoline fuels) plus I like how they sound and feel. But the power comes from the compressor wheel; if the compressor runs out of power, the cam isn't going to add not even 1hp. Cam a modification that will risk opening the engine to debris, spun cam bearings, dirty technicians hands, improper torque sequences, leaking gaskets, etc... for no real performance gain in the world of small-ish blowers on street vehicles.
If the engine has the spring for it, I tentatively recommend pulley up to the blowers or engines maximum HP and keep the current camshaft, it will make the same power as any other cam, with more economy, more reliability, more longevity, lower rpm, reduced wear and tear, less risk, less combo matching necessary modifications.
Don't get me wrong, I always put an aftermarket cam in my engines for reasons. But I do it myself and I've been doing it for 27 years, and those reasons are not for power purposes or making the vehicle faster. Its more for linearity of torque curve and tuning reasons (it makes the VE table flatter and limits low rpm cylinder pressure which helps with reliability on gasoline which is important if you are using cheap gasoline fuels) plus I like how they sound and feel. But the power comes from the compressor wheel; if the compressor runs out of power, the cam isn't going to add not even 1hp. Cam a modification that will risk opening the engine to debris, spun cam bearings, dirty technicians hands, improper torque sequences, leaking gaskets, etc... for no real performance gain in the world of small-ish blowers on street vehicles.
If the engine has the spring for it, I tentatively recommend pulley up to the blowers or engines maximum HP and keep the current camshaft, it will make the same power as any other cam, with more economy, more reliability, more longevity, lower rpm, reduced wear and tear, less risk, less combo matching necessary modifications.
Racer
Joined: Oct 2018
Posts: 464
Likes: 155
From: ATX
his limit will be the fuel system. N/a cams are amazing for centri kits blowers. The tight LSA will keep the low rpm snappy. While the centri does work at the top. Personally, 3.4 pulley and only making 635 tells me your belt is slipping. Pulley up to a 3.8. Add a n/a cam and you need a meth system. Guaranteed over 700 wheel with blower not even breaking a sweat
Can't based what he did on the dyno from anything because it could be a greedy dyno. Everything could be 100% fine.
Last edited by PSSSSSHC6; Aug 2, 2023 at 10:31 AM.
Intermediate
Joined: Feb 2019
Posts: 37
Likes: 11
From: Charlotte NC
ECS novi 1500, Nightfury cam, full exhaust 640rwhp with restrictor plate on 93. Drivability is great, nice sound and decent power.
Tried to add a video but all my videos it says the files are too large for the forum.
Tried to add a video but all my videos it says the files are too large for the forum.
Drifting
Joined: Apr 2005
Posts: 1,917
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From: Central NJ