I'm having head/cam done on my 2025 E Ray, question about cams
Thread Starter
Melting Slicks
Joined: Oct 2008
Posts: 2,089
Likes: 1,169
From: Pasadena Texas
I'm having head/cam done on my 2025 E Ray, question about cams
Here is an email I received today.
I can google this, but I prefer hearing from someone with experience about the difference between the two. Paraphrasing I was told the V220 was milder and the V225 was a bit wilder. If so, would the V225 be too wild for everyday driving or not. Or is this mild vs wild even correct? My car is basically for the drag races with minimal daily driving. There seems to be a lot of positive comments on Tooley Racing.
The camshaft options we typically use in our C8 N/A packages are the Brian Tooley Racing (BTR) Gen V 220 or Gen V 225.
Thread Starter
Melting Slicks
Joined: Oct 2008
Posts: 2,089
Likes: 1,169
From: Pasadena Texas
Le Mans Master
Joined: Dec 2005
Posts: 7,002
Likes: 1,687
From: Southeast TX
I don't know how much you could mill and how thin you could go on the head gaskets before running into PTV issues. Don't know if fly cutting the pistons is an option on the LT2. Also, if you're limited to 93 octane, that may limit how high you can go. With E85, you can go way up without being octane limited. E cools the intake charge as well as giving more octane. Makes more power two ways.
Le Mans Master
Joined: Feb 2009
Posts: 5,180
Likes: 204
From: Your Sister's Bedroom
You already have to remove the engine to do this job. Go with the GPI SS3, Flycut the pistons, Mill .040" off the heads, and run a .040 Head Gasket and tune it on E85. It will drive excellent if your tuner is good at his job and make gobs of power. By just installing a BTR 220 or 225 you are gonna leave a lot on the table, however id go with the 225 if it had to be one of those.
Racer
Joined: Feb 2020
Posts: 393
Likes: 585
From: Philly
Agree 100% with breecher.
I had a TSP stage 2 (227/242 112LSA) and a .040 shave. The car had perfect street manners with a babies rockabye at a red light. To get the full potential out of the combo you'll need to upgrade your IM, I was pulling vacuum on my ported stocker and a ported 95. Unless something has developed and I'm not aware, you need to rev it to 7k and the car can only does that manually with the limits raised. I was at 6500 and was leaving a lot on the table.
Car went 10.4@133 iirc in 2k DA.
I had a TSP stage 2 (227/242 112LSA) and a .040 shave. The car had perfect street manners with a babies rockabye at a red light. To get the full potential out of the combo you'll need to upgrade your IM, I was pulling vacuum on my ported stocker and a ported 95. Unless something has developed and I'm not aware, you need to rev it to 7k and the car can only does that manually with the limits raised. I was at 6500 and was leaving a lot on the table.
Car went 10.4@133 iirc in 2k DA.
Last edited by Snowblind2.0; Jun 10, 2026 at 06:27 PM.
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Le Mans Master
Joined: Dec 2005
Posts: 7,002
Likes: 1,687
From: Southeast TX
The SS3 cam has 19 degrees of overlap. For a rig that wants every last tenths in the qtr....maybe. It's going to fall on its face after every shift. It's going to run like **** on the street. A cam with 10 degrees less overlap is going to run WAY smoother and only give up a few HP above 6000 rpm. 19 degrees of overlap is just dumb on anything other than a dedicated drag Vette. For the money it takes to do heads/cam, and the drivability you're going to give up if you go with a stupidly big cam, a supercharger would be a better option.
Le Mans Master
Joined: Feb 2009
Posts: 5,180
Likes: 204
From: Your Sister's Bedroom
Agree 100% with breecher.
I had a TSP stage 2 (227/242 112LSA) and a .040 shave. The car had perfect street manners with a babies rockabye at a red light. To get the full potential out of the combo you'll need to upgrade your IM, I was pulling vacuum on my ported stocker and a ported 95. Unless something has developed and I'm not aware, you need to rev it to 7k and the car can only does that manually with the limits raised. I was at 6500 and was leaving a lot on the table.
Car went 10.4@133 iirc in 2k DA.
I had a TSP stage 2 (227/242 112LSA) and a .040 shave. The car had perfect street manners with a babies rockabye at a red light. To get the full potential out of the combo you'll need to upgrade your IM, I was pulling vacuum on my ported stocker and a ported 95. Unless something has developed and I'm not aware, you need to rev it to 7k and the car can only does that manually with the limits raised. I was at 6500 and was leaving a lot on the table.
Car went 10.4@133 iirc in 2k DA.
Le Mans Master
Joined: Feb 2009
Posts: 5,180
Likes: 204
From: Your Sister's Bedroom
The SS3 cam has 19 degrees of overlap. For a rig that wants every last tenths in the qtr....maybe. It's going to fall on its face after every shift. It's going to run like **** on the street. A cam with 10 degrees less overlap is going to run WAY smoother and only give up a few HP above 6000 rpm. 19 degrees of overlap is just dumb on anything other than a dedicated drag Vette. For the money it takes to do heads/cam, and the drivability you're going to give up if you go with a stupidly big cam, a supercharger would be a better option.
I love BTR as a company and Brian is a wealth of knowledge, but their sales staff isn’t as educated on their products as GPI. No one at BTR could tell me how much PTV clearance the 225 has, obviously you want to measure, but GPI has this info for all their cams. So it makes knowing what you are getting into much easier.
Thread Starter
Melting Slicks
Joined: Oct 2008
Posts: 2,089
Likes: 1,169
From: Pasadena Texas
Here is an email I received today.
I can google this, but I prefer hearing from someone with experience about the difference between the two. Paraphrasing I was told the V220 was milder and the V225 was a bit wilder. If so, would the V225 be too wild for everyday driving or not. Or is this mild vs wild even correct? My car is basically for the drag races with minimal daily driving. There seems to be a lot of positive comments on Tooley Racing.
I can google this, but I prefer hearing from someone with experience about the difference between the two. Paraphrasing I was told the V220 was milder and the V225 was a bit wilder. If so, would the V225 be too wild for everyday driving or not. Or is this mild vs wild even correct? My car is basically for the drag races with minimal daily driving. There seems to be a lot of positive comments on Tooley Racing.
Charlie
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Last edited by OLD_GOAT; Jun 10, 2026 at 09:38 PM.
Team Owner
Joined: Jan 2007
Posts: 29,066
Likes: 1,839
From: cookeville tennessee
You already have to remove the engine to do this job. Go with the GPI SS3, Flycut the pistons, Mill .040" off the heads, and run a .040 Head Gasket and tune it on E85. It will drive excellent if your tuner is good at his job and make gobs of power. By just installing a BTR 220 or 225 you are gonna leave a lot on the table, however id go with the 225 if it had to be one of those.
Team Owner
Joined: Jan 2007
Posts: 29,066
Likes: 1,839
From: cookeville tennessee
When all in let us know how the car ends up and the chart before and after. Are at least after... good luck man
Race Director
Joined: Dec 2006
Posts: 12,424
Likes: 2,938
From: Fort Worth, Texas
What rpm do you plan to shift at? To me the answer to that question answer’s which can to go with. Average power is what is fastest and if you’re not willing to shifter higher than stock then why go with a later IVC that moves the powerband up? Not so much worried about low end as you have instant electric torque to help with the launch.
Thread Starter
Melting Slicks
Joined: Oct 2008
Posts: 2,089
Likes: 1,169
From: Pasadena Texas
Best quarter mile time before any mods 10.72 @ 127 in 900 DA. Had Mickeys street R, but I don't think drag radials help without a line lock or having AWD. In better DA, a 10.6 for sure and maybe a 10.5 could be had.
As far as cams go, I don't know enough about engines to even imply the two cams offered are a wrong choice. I'm going with the 225 vs the 220 which are the only options I have.
I do appreciate the suggestions that have been given, but I just don't know enough about engines to change or amend the package Peitz is offering.
Le Mans Master
Joined: Feb 2009
Posts: 5,180
Likes: 204
From: Your Sister's Bedroom
Best quarter mile time before any mods 10.72 @ 127 in 900 DA. Had Mickeys street R, but I don't think drag radials help without a line lock or having AWD. In better DA, a 10.6 for sure and maybe a 10.5 could be had.
As far as cams go, I don't know enough about engines to even imply the two cams offered are a wrong choice. I'm going with the 225 vs the 220 which are the only options I have.
I do appreciate the suggestions that have been given, but I just don't know enough about engines to change or amend the package Peitz is offering.
As far as cams go, I don't know enough about engines to even imply the two cams offered are a wrong choice. I'm going with the 225 vs the 220 which are the only options I have.
I do appreciate the suggestions that have been given, but I just don't know enough about engines to change or amend the package Peitz is offering.
When is the car going in? I too am excited to see your results. I regret not buying a E-Ray, strongly considering the GSX.
Pro
Joined: Sep 2000
Posts: 679
Likes: 310
From: McKinney Texas
I'm running this cam with 12.5:1 compression and it drives like stock under 3500rpm's except there is more torque down low.
238/247 .652/.630 110/118 icl/ecl (4* advance built in) 114 lsa
I'm thinking about the new trans controller as well. I currently shift at 7300rpm manually and frequently hit the rev limiter even with a shift light as it starts to pull faster at the revs climb.
My stock clutches start to slip at the top of 3rd if you are beating on it good and they get hot.
I think a little more pressure on the stock clutches (Stingray) and auto shift by RPM in manual may make for a decent setup.
But to your original question drivability and manners are mostly due to good tuning.
238/247 .652/.630 110/118 icl/ecl (4* advance built in) 114 lsa
I'm thinking about the new trans controller as well. I currently shift at 7300rpm manually and frequently hit the rev limiter even with a shift light as it starts to pull faster at the revs climb.
My stock clutches start to slip at the top of 3rd if you are beating on it good and they get hot.
I think a little more pressure on the stock clutches (Stingray) and auto shift by RPM in manual may make for a decent setup.
But to your original question drivability and manners are mostly due to good tuning.
Thread Starter
Melting Slicks
Joined: Oct 2008
Posts: 2,089
Likes: 1,169
From: Pasadena Texas
I'm running this cam with 12.5:1 compression and it drives like stock under 3500rpm's except there is more torque down low.
238/247 .652/.630 110/118 icl/ecl (4* advance built in) 114 lsa
I'm thinking about the new trans controller as well. I currently shift at 7300rpm manually and frequently hit the rev limiter even with a shift light as it starts to pull faster at the revs climb.
My stock clutches start to slip at the top of 3rd if you are beating on it good and they get hot.
I think a little more pressure on the stock clutches (Stingray) and auto shift by RPM in manual may make for a decent setup.
But to your original question drivability and manners are mostly due to good tuning.
238/247 .652/.630 110/118 icl/ecl (4* advance built in) 114 lsa
I'm thinking about the new trans controller as well. I currently shift at 7300rpm manually and frequently hit the rev limiter even with a shift light as it starts to pull faster at the revs climb.
My stock clutches start to slip at the top of 3rd if you are beating on it good and they get hot.
I think a little more pressure on the stock clutches (Stingray) and auto shift by RPM in manual may make for a decent setup.
But to your original question drivability and manners are mostly due to good tuning.
About your stock clutches slipping, are they slipping like mine did with my 2021 Z51 with E85 tuning and mickey street R's? You can see the slip in 4th gear at 4500 rpms which was stock clutches slipping. About 1:03 to 1:11 in the video.
Race Director
Joined: Dec 2006
Posts: 12,424
Likes: 2,938
From: Fort Worth, Texas
Are you running the BTR v220 or v225?
About your stock clutches slipping, are they slipping like mine did with my 2021 Z51 with E85 tuning and mickey street R's? You can see the slip in 4th gear at 4500 rpms which was stock clutches slipping. About 1:03 to 1:11 in the video.
https://www.youtube.com/watch?v=3-6K0fIhv7g
About your stock clutches slipping, are they slipping like mine did with my 2021 Z51 with E85 tuning and mickey street R's? You can see the slip in 4th gear at 4500 rpms which was stock clutches slipping. About 1:03 to 1:11 in the video.
https://www.youtube.com/watch?v=3-6K0fIhv7g
https://briantooleyracing.com/btr-ge...t-limiter.html