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C6 Corvette ZR1 & Z06General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
Since you have AI heads I would pair it up with an RPM cam. Fran has perfected that package and eclipsed 600 many times. I’m sure he’s also got the tuning/drivability down to the best it can get.
It’s a proven combo!
Since you have AI heads I would pair it up with an RPM cam. Fran has perfected that package and eclipsed 600 many times. I’m sure he’s also got the tuning/drivability down to the best it can get.
It’s a proven combo!
Since you have AI heads I would pair it up with an RPM cam. Fran has perfected that package and eclipsed 600 many times. I’m sure he’s also got the tuning/drivability down to the best it can get.
It’s a proven combo!
He's tried that cam and wasn't able to get it to drive how he wanted. It also didn't make 600 at the time.
This what BTR LS7 NA cam family looked like earlier:
As you can see, there was a clear pattern between the stages. There's no way stg4 would behave similarly to stg3, the difference in O/L and IVC is just too big.
Stg3 and stg4 cams have changed at some point, stg3 not so much, stg4 a bit more, but I have yet to update my notes.
Since you have AI heads I would pair it up with an RPM cam. Fran has perfected that package and eclipsed 600 many times. I’m sure he’s also got the tuning/drivability down to the best it can get.
It’s a proven combo!
i did have that cam and had difficulties getting it to drive good. However I am using a different and great tuner now.
i did have that cam and had difficulties getting it to drive good. However I am using a different and great tuner now.
And now you are starting to see the problem. Tons of people say the B3 drives amazing, and it does drive great, but if you think that is too much, then you will hate the BTR 4 because it will be worse than the B3.
And now you are starting to see the problem. Tons of people say the B3 drives amazing, and it does drive great, but if you think that is too much, then you will hate the BTR 4 because it will be worse than the B3.
Does anyone have a dyno of a BTR3 compared to a 4 with all the same supporting mods? What is the difference in the characteristics of the two?
I am on the fence and about to order a 3, but could easily just go with a 4. My car is not a dd, rarely gets driven at all tbh. Just an occasional weekend warrior.
May start doing some SCCA for ***** and giggles, how do these cams do with that?
I'm in the same boat as you...Car rarely gets driven. My TSP LS7R cam car is a BLAST on track days. Do it, you will fall in love with the car all over again.
OAN: Drivability in my car is awesome. No surge ever above 1400rpm. Cruises at 70mph in 6th smooth as silk. 580whp on an "unhappy" dyno
I'm in the same boat as you...Car rarely gets driven. My TSP LS7R cam car is a BLAST on track days. Do it, you will fall in love with the car all over again.
OAN: Drivability in my car is awesome. No surge ever above 1400rpm. Cruises at 70mph in 6th smooth as silk. 580whp on an "unhappy" dyno
Yes to the bolded.
My can is similar to the TSP LS7R (new 4.2 is a little bigger than mine) but drivability is fine. Never really had any surge and at 40mph in 6th, it doesn't do anything but go. Load or no load, it doesn't buck or surge
Call CPR and talk to them about their Alpha and Beta cams. They have been rocking, proven 600+ with ease, crazy 1/2 mile times, and drive great. If I had to do a heads/cam setup these days and wasn't going custom, would just call Joe and get one of his setups.
my car must be a unicorn. I have the BTR4 and it drives great I can cruise along at 2000rpm on the highway and no weird stuff happens. Taking off from a redlight I have to give it more throttle but I forget what my car was like to drive before I did the mods. maybe I think I have to give it more throttle compared to my corolla?
I don't know why these cams get such a bad rap for driveability I love mine.
my car must be a unicorn. I have the BTR4 and it drives great I can cruise along at 2000rpm on the highway and no weird stuff happens. Taking off from a redlight I have to give it more throttle but I forget what my car was like to drive before I did the mods. maybe I think I have to give it more throttle compared to my corolla?
I don't know why these cams get such a bad rap for driveability I love mine.
I don't know why these cams get such a bad rap for driveability I love mine.
Exactly, you love yours but not everyone seem to love theirs.
Everyone has an opinion based on their subjetive likings and past experiences. When similar opinions start to accumulate in high enough quantities is when reputations start to emerge. In this case, there are enough people who feel stage 3/4/5 etc. cathegory cams don't drive smooth enough for their average use case which is quite likely to be DD oriented. Same people could feel very differently if it were a WW let alone a dedicated track car.
my car must be a unicorn. I have the BTR4 and it drives great I can cruise along at 2000rpm on the highway and no weird stuff happens. Taking off from a redlight I have to give it more throttle but I forget what my car was like to drive before I did the mods. maybe I think I have to give it more throttle compared to my corolla?
I don't know why these cams get such a bad rap for driveability I love mine.
If you can't cruise along at 2k rpm you have a serious issue. Try cruising around at 1100rpm in 6th gear, it's not going to happen. 2k rpm in 6th gear is somewhere around 85+mph... Not very many places you can do that, besides Texas, lol.
If you can't cruise along at 2k rpm you have a serious issue. Try cruising around at 1100rpm in 6th gear, it's not going to happen. 2k rpm in 6th gear is somewhere around 85+mph... Not very many places you can do that, besides Texas, lol.
Exactly, a BTR Stg 4 is a little smaller than mine and I can run around at 1000 rpm in 6th at 40 mph. Having to drive above 2000 rpm isn't a good running cam or tune
Exactly, a BTR Stg 4 is a little smaller than mine and I can run around at 1000 rpm in 6th at 40 mph.
That is impressive. Does it also accept normal amount of throttle (not WOT, of course) so you can accelerate with traffic?
If you don't mind me asking, what's the ign advance at that load point?
That is impressive. Does it also accept normal amount of throttle (not WOT, of course) so you can accelerate with traffic?
If you don't mind me asking, what's the ign advance at that load point?
Yes without a problem. When its cold, under 100°, it bucks but as soon as there's some heat in it, its fine. Ignition adv is 17.5° in that range and goes to 27° max at 2800 rpm. Cam is 252/258 113+4, TPIS 92MM TB so there was some scaler work done too
I'm in the same boat as you...Car rarely gets driven. My TSP LS7R cam car is a BLAST on track days. Do it, you will fall in love with the car all over again.
OAN: Drivability in my car is awesome. No surge ever above 1400rpm. Cruises at 70mph in 6th smooth as silk. 580whp on an "unhappy" dyno
Originally Posted by Millenium Z06
Yes to the bolded.
My can is similar to the TSP LS7R (new 4.2 is a little bigger than mine) but drivability is fine. Never really had any surge and at 40mph in 6th, it doesn't do anything but go. Load or no load, it doesn't buck or surge
I run a LS7R cam as well that I originally had tuned on MAF. It ran horribly and I was instantly unhappy and was told 'this is the best it'll get'.
Found a local tuner in my area that is well respected in the LS community and had him re-tune it with a speed density tune and spend a good amount of time dialing drivability in and I can now run the car just like Millenium's - 40mph in 6th gear with absolutely no issues.
I just swapped out my 7.750" push rods for 7.775" push rods and swapped my TSP 1 7/8" headers for 2" ARH and added high flow cats to make the fiance happy. (Dyno numbers are TBD - trying to schedule dyno time.)
A lot of the people complaining about lack of drivability I fear are victims or poor tunes more so than they are a poor parts combination.
06-11-2018, 10:43 AM
(Dyno numbers are TBD - trying to schedule dyno time.)