When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
o0o0o I like this torkinater, that might be the exact ticket I need, now kinda happy things got in the way in the past year for me to swap the cam in my 6.0!
Can't you guys just throw the proper size drill bit in the box with the cam for us old school DBC guys?
Hot off the presses comes the "Say it ain't so, Joe!" My 2000 C5 A4 Vert has an LS7 in it with the original PCM, .605" lift, 232/250 Cam Motion 112° LSA, which is a 17° overlap cam. I love it, it gets 23mpg on the highway. Very little bucking, none at all after 48mph, especially with just a very slight acceleration. There are guys who tune, and Tuners who know what they're doing. It's like the Olympics!! Most everyone is an also ran, with only the top 3 getting a medal. Even then, there are differences between Gold, Silver, and Bronze. I'm not here spewing BS, as in it "It drives like stock". But it's not bad at all. I'm sure the 427 cubes help......
what is the opinion on how the big truck torkinator would stack up against BTR’s new Truck Norris cam? Both cams also appear very streetable and don’t force the user into an immediate TC change..👍
what is the opinion on how the big truck torkinator would stack up against BTR’s new Truck Norris cam? Both cams also appear very streetable and don’t force the user into an immediate TC change..👍
Btr doesn’t disclose full specs but likely within a couple degrees and we commit to .600 lift. They will both run great no doubt and yes with stock converter.
I’ve been waiting on that response. I figured the two cams were similar since they have similar dyno results.
Do you have a dyno sheet for the new big torkinator cam? Hopefully Holdener does a video soon on the two new torkinator cams. He’s already done one on the Truck Norris.
Do you have a dyno sheet for the new big torkinator cam? Hopefully Holdener does a video soon on the two new torkinator cams. He’s already done one on the Truck Norris.
I’m ready to grab the cam as I’m working on two LS projects. I have a cast iron 5.3 and a 5.7 LS1. The ride will be a 1981 Turbo Trans Am that looks just like the the picture I’ve attached. I’ll most likely use the Summit Turbo too. Just like this one with approximately 74k original miles.
I’m ready to grab the cam as I’m working on two LS projects. I have a cast iron 5.3 and a 5.7 LS1. The ride will be a 1981 Turbo Trans Am that looks just like the the picture I’ve attached. I’ll most likely use the Summit Turbo too. Just like this one with approximately 74k original miles.
nice. I’ve got an 04 5.3 Silverado with 4.56 gears on 33” tires. I’m looking for a nice cam that won’t require stiff springs that will beat my stock lifters up. I’m not wanting to pull the heads for new lifters this year 🤣
nice. I’ve got an 04 5.3 Silverado with 4.56 gears on 33” tires. I’m looking for a nice cam that won’t require stiff springs that will beat my stock lifters up. I’m not wanting to pull the heads for new lifters this year 🤣
my brother has the same Silverado! That gearing you have would be great with this cam. I think this cam will serve both of our needs. I want something torquey around town and that’s what initial drew me into the Truck Norris.
o0o0o I like this torkinater, that might be the exact ticket I need, now kinda happy things got in the way in the past year for me to swap the cam in my 6.0!
Awesome! We think the Torkinator SUM-8727R1and Big TorkinatorSUM-8728R1help fill a void and they'll be popular among our customers! There's certainly been discussions and a buzz about them since we released them at the beginning of 2022. Reply here or shoot us a PM if we could be of any further assistance on your cam selection for the 6.0 swap. We'll be happy to help!
my brother has the same Silverado! That gearing you have would be great with this cam. I think this cam will serve both of our needs. I want something torquey around town and that’s what initial drew me into the Truck Norris.
@Summitracing Im interested in the Big TorkinatorSUM-8728R1How do you think it would do against my current custom blower cam? Cam motion 218/228 .561/.561 115.5+4.5 in a 5.3 LM7 with a single front mount T4 70/70 .96ar turbo? I realize this is a step down in a cam but just wondering if I will pick up anything on the street as I push 13-15psi with a billet 78/75 .96ar T4 currently. Car is fast and revs to 6500 with Howard .600" lift springs. I do have a 2004R built trans and a billet 2400 stall 10" converter (flashes to 3k). I just changed the turbo out to a new VS billet next gen 70/70 turbo to help spool earlier in the RPM range and I don't want to rev higher than 6500. Car is DD/street driven warm weather only so I spend alot of time 1500-4500rpms 90% of the time. I feel like the Stage 2 Summit turbo cam is too big and the stage 1 (ghost cam) is bigger than what I got currently which I don't want. I can only manage 14" vacuum with the 218/228 cam currently. Car is a 87 firebird with 3.55 gears and 28" drag radials.
I have a trick turbo kit VS7875 billet turbo, PRC 2.5 ported 706 heads. For this combo on my 4.8l truck I chose the BTR stage one turbo cam which so far being N/A I like. Haven’t put the turbo kit in yet. My suggestions are don’t over cam the motor. The BTR stage one is super streetable and that was what I wanted most of all.
I have a trick turbo kit VS7875 billet turbo, PRC 2.5 ported 706 heads. For this combo on my 4.8l truck I chose the BTR stage one turbo cam which so far being N/A I like. Haven’t put the turbo kit in yet. My suggestions are don’t over cam the motor. The BTR stage one is super streetable and that was what I wanted most of all.
BTR CAMSHAFT - LS - TURBOCHARGED STAGE 1 - 32227133R1
Specs: 222/227 .604"/.604" 113+3
not that much different than what I have, a few more degrees on the intake and a smidge more lift. If I'm going to do the cam swap there has to be noticeable benefit like additional spool and Tq below 5k which I don't think would be possible. Maybe in the 1800-2500 range with the BIG torkinator but the summit specs are real close to the BTR truck cams from 2500- 3000/3500 they all kinda make the same power and peak is just extended further out in the rpm range. Below 2500 the 202/202 or a 200/205 would be benefical in the 1800-3k range for towing but with a stall that flashes to 3k that would prob be a waste. If I could pick up in the 3000-4500/5000 range It would be worth it. Just don't know if a off the shelf cam would be worth it over my current custom cam. My cam currently is very streetable and idles good at 700 and I can lug it at 1500-2000 45mph-65mph and it doesnt feel like it wants to die.
Richard holdener has done a dyno of some of the summit cams and most recently the Truck Norris cam. I’m hoping that Summit sends the two torkinators to him for some dyno testing. Or! Someone posts a dyno graph video on YouTube. That’s what I’m waiting on before I chose the cam for my nine turbo Silverado that’s a DD.
I would like to see how the torkinators and the Truck Norris do under boost though.
@Summitracing Im interested in the Big TorkinatorSUM-8728R1How do you think it would do against my current custom blower cam? Cam motion 218/228 .561/.561 115.5+4.5 in a 5.3 LM7 with a single front mount T4 70/70 .96ar turbo? I realize this is a step down in a cam but just wondering if I will pick up anything on the street as I push 13-15psi with a billet 78/75 .96ar T4 currently. Car is fast and revs to 6500 with Howard .600" lift springs. I do have a 2004R built trans and a billet 2400 stall 10" converter (flashes to 3k). I just changed the turbo out to a new VS billet next gen 70/70 turbo to help spool earlier in the RPM range and I don't want to rev higher than 6500. Car is DD/street driven warm weather only so I spend alot of time 1500-4500rpms 90% of the time. I feel like the Stage 2 Summit turbo cam is too big and the stage 1 (ghost cam) is bigger than what I got currently which I don't want. I can only manage 14" vacuum with the 218/228 cam currently. Car is a 87 firebird with 3.55 gears and 28" drag radials.
Originally Posted by customblackbird
BTR CAMSHAFT - LS - TURBOCHARGED STAGE 1 - 32227133R1
Specs: 222/227 .604"/.604" 113+3
not that much different than what I have, a few more degrees on the intake and a smidge more lift. If I'm going to do the cam swap there has to be noticeable benefit like additional spool and Tq below 5k which I don't think would be possible. Maybe in the 1800-2500 range with the BIG torkinator but the summit specs are real close to the BTR truck cams from 2500- 3000/3500 they all kinda make the same power and peak is just extended further out in the rpm range. Below 2500 the 202/202 or a 200/205 would be benefical in the 1800-3k range for towing but with a stall that flashes to 3k that would prob be a waste. If I could pick up in the 3000-4500/5000 range It would be worth it. Just don't know if a off the shelf cam would be worth it over my current custom cam. My cam currently is very streetable and idles good at 700 and I can lug it at 1500-2000 45mph-65mph and it doesnt feel like it wants to die.
Thanks for checking in on the thread about the SUM-8728R1 Big Torkinator. If you're looking to bring the power in sooner with torquey crisp throttle response this is the ticket. The intake valve closing (IVC) is what sets the powerband. The earlier we close the intake valve the sooner the powerband will start. Your current cam has a 40* IVC vs. 33* for the 8728R1. With the 7* earlier IVC of the 8728R1, it's designed to make great torque from 2,000 rpm up and it will pull to 6500 with your .600" lift beehives. The added lift will improve power/torque across the range compared to similar-sized cams.
You can expect the idle manners and vacuum to be similar to your current cam. Your current cam has a -2* IVO and the 8728R1 has a -1* IVO. The combined early IVC and later EVO will make lugging this even easier and likely more responsive at lower rpm. We wouldn't hesitate to go with the 8728R1 if you're looking for better power under the curve with similar or better driveability.
If you'd like to see how we look at cams plug the cam specs into our cam timing calculator. This will give you the individual valve timing events. For further info on individual timing events and how they affect engine performance check out this two-part article. To really dive into the individual valve events see part two of the article.
@90lxtc01 mentioned Holdener videos. The latest video from Holdener comparing the Truck Norris cam and SS2 with boost is a good one to watch. This gives you a good idea of what you'd see under boost with a smaller truck cam that has a tight LSA. Given the similar specs of the Truck Norris to our Big Torkinator, we'd expect those graphs to look fairly similar. We don't have any dyno charts of the Torkinator cams yet. We enjoy working with Holdener so it's possible there could be a future test using those cams.
Thanks for checking in on the thread about the SUM-8728R1 Big Torkinator. If you're looking to bring the power in sooner with torquey crisp throttle response this is the ticket. The intake valve closing (IVC) is what sets the powerband. The earlier we close the intake valve the sooner the powerband will start. Your current cam has a 40* IVC vs. 33* for the 8728R1. With the 7* earlier IVC of the 8728R1, it's designed to make great torque from 2,000 rpm up and it will pull to 6500 with your .600" lift beehives. The added lift will improve power/torque across the range compared to similar-sized cams.
You can expect the idle manners and vacuum to be similar to your current cam. Your current cam has a -2* IVO and the 8728R1 has a -1* IVO. The combined early IVC and later EVO will make lugging this even easier and likely more responsive at lower rpm. We wouldn't hesitate to go with the 8728R1 if you're looking for better power under the curve with similar or better driveability.
If you'd like to see how we look at cams plug the cam specs into our cam timing calculator. This will give you the individual valve timing events. For further info on individual timing events and how they affect engine performance check out this two-part article. To really dive into the individual valve events see part two of the article.
@90lxtc01 mentioned Holdener videos. The latest video from Holdener comparing the Truck Norris cam and SS2 with boost is a good one to watch. This gives you a good idea of what you'd see under boost with a smaller truck cam that has a tight LSA. Given the similar specs of the Truck Norris to our Big Torkinator, we'd expect those graphs to look fairly similar. We don't have any dyno charts of the Torkinator cams yet. We enjoy working with Holdener so it's possible there could be a future test using those cams.
I’ve installed and tuned several of your Stage 2 turbo cams, but. Now I’m looking for a cam for my Brodix BR7 headed LS7 with 9.7:1 compression with twin bw369sxe’s and 3 inch exhaust our the back, with a T-56. I was thinking your stage two or new stage 3 twin turbo cam would be a good fit, but was hoping you could let me know what y’all recommend. This is a mostly street driven 68 Camaro, but it does see the track or other driving events on occasion.
I’ve installed and tuned several of your Stage 2 turbo cams, but. Now I’m looking for a cam for my Brodix BR7 headed LS7 with 9.7:1 compression with twin bw369sxe’s and 3 inch exhaust our the back, with a T-56. I was thinking your stage two or new stage 3 twin turbo cam would be a good fit, but was hoping you could let me know what y’all recommend. This is a mostly street driven 68 Camaro, but it does see the track or other driving events on occasion.
Thank you for checking in on the thread for a cam recommendation. It sounds like you have a good background with our stage 2 turbo cam SUM-8706R1 so you know what to expect from it. It would be a good fit for this current build. Although, we think you'll be happier all-around with the new stage 3 twin-turbo SUM-8722R1 cam here. Given the larger cubes topped off with some great heads and the nice set of twins, the 8722R1 would complement the combo very well. It spools the quickest out of our twin-turbo cams. You can expect a strong mid-range and good top-end with this cam. Pair it with the Trickflow TFS-2500286P.660" lift duals and it'll be happy out to 7,100 plus. We would recommend 3:55+ gears for use with this cam. The 6-speed will help if you're in the 3:20-3:40 range but we'd prefer 3:55+ gears.
The 8722R1 will get along just fine for daily driving duties with your combo. When you're feeling sporty and want to take it to the track it'll be happy to sing out into the 7,000+ range.
03-10-2022, 10:37 AM
