Feedback about roller camshafts

[Pronto]

It's too loose down low and too loose up top. Do a search on them. Their most popular converter is the 9" non lock up. That is one hell of a converter. I had a PTC 10" lock up. Couldn't stand it. Got rid of it and went with a Pat's 12" lock up. Ran that for 7 years all the way down to 11.3 locked. It was very good. Don't hear much from them now though. Brian on Turbobuick.com facebook has a post on Oct 3 for a roller cam.

 

[~JM~]

Selecting a camshaft based upon exhaust note is goofy.

"Sounds" like you need a Comp Cams Mutha Thumpr.

 

[modular46]

Selecting a camshaft based upon exhaust note is goofy.

"Sounds" like you need a Comp Cams Mutha Thumpr.

I never said I want to select a cam by exhaust note. I said that I don't want a big lumpy cam with poor vacuum.

 

[modular46]

Anyone have the Revolution X camshafts by Full Throttle?

​

 

[SCOOBY DOO]

Why does everyone say the PTC converter is junk?

Because the off the shelf LU doesn't couple on the big end worth a fuck.

 

['87 Turbo "T"]

I’m confused. You’re getting a lot of great info here & you seem to have your mind setup on getting a new cam no matter what. “What do they sound like at idle” “I’ll pay for a cam”etc. Cams aren’t as prevalent to making power in turbo cars. Seems your wanting spending money places instead of where it could be better spent.

You don’t want to install a cage(fair enough). Anything faster than 11.5 requires a cage. Seems your current setup can get you there. You can figure out your converter slip using an online calculator to at least get you an idea of your converter slip percentage.

You want to have all this power for the street & that’s fine it’s your ride. But you also have to have all your puzzle pieces together. Setup, converter, suspension, etc. The Gurus here have given you the answers. It’s up to you whether or not you want to take it.

Wallace Racing - Converter Slip Calculator

Use more than one calculator to compare & contrast.

 

[Mr.Spool]

Because the off the shelf LU doesn't couple on the big end worth a fuck.

Fuckin amen there
It's only when they actually try to get a number they see these things.

 

[Mr.Spool]

Who said I was trying to run 9's?

In

I am completely open minded to camshafts, what I would like to see is some sound clips of various camshafts so I can see what I can live with. Patrick at Precision says the 62-62 turbo is more than enough turbo to get into the 9's if I ever wanted that. Right now I believe that the biggest limitation for power will be duty cycle with the 120 pound injectors on E85 using the Helcat pump. I believe Racetronics is coming out with a twin internal pump that will prevent any issues.

In this post you are talking about camshafts and eluding to a 9 sec if you wanted to in the "future" with a 6262.
The camshaft and turbo and injectors and converter and suspension must be selected properly to do this future pass if you want.
Also your goal of 650 rwhp is the power range to run 9s.
I have run and tuned on and driven fast combos that inmo had smaller turbos than the motor could handle.
I have found it much easier to put the right size turbo for the job on the car and not overspeed the wheel as they do break
Ask me how I know
I dont think you will hit your 650rwhp on that converter you are running nor with the 6262 turbo.
I would suggest you take a ride in the power level you seek to see if you really want that
As you have spoken about a street car that you dont want to put safety equipment in which means you will be limited to 11.5 which with your current power level should go quicker than that already
If you get another converter.

 

[hensleyt]

To build a new 251 and save you # matching is good if you want to sell it someday. I felt that way at one time.
Someone ask how far do you want to go down the rabbit hole. Its your choice. .There is well over a dozen different cam grinder and each one has its own magic. Comp cams has several 206 and 210 lobe profiles. The three most talked about cams on this thread all have different 206 lobes FT 206 lobe and CC 206 are very different ( and most all cams are ground by CC) but you probably can't find 5 hp difference between the two. And Barry Manilow couldn't tell the difference in the exhaust sound. I don't think you can take all of our opinions and make a bade choice. But your best choice will be what can you find when its time to buy. any thing between 204 and 212 at any LS and your Butt and Berry won't be able to tell a difference.
and if 3 pages of this has not made your head spend what tell you try to pick a convertor or try to decide if the driveshaft can take it or axles, ring gear career. At that power any one of the 3 will break

 

[modular46]

Because the off the shelf LU doesn't couple on the big end worth a fuck.

Thanks for explaining that to me. I'm all ears for recommendations on lockup converters. Especially ones that I can lockup in 3rd gear through the EEC-GN.

 

[modular46]

I’m confused. You’re getting a lot of great info here & you seem to have your mind setup on getting a new cam no matter what. “What do they sound like at idle” “I’ll pay for a cam”etc. Cams aren’t as prevalent to making power in turbo cars. Seems your wanting spending money places instead of where it could be better spent.

You don’t want to install a cage(fair enough). Anything faster than 11.5 requires a cage. Seems your current setup can get you there. You can figure out your converter slip using an online calculator to at least get you an idea of your converter slip percentage.

You want to have all this power for the street & that’s fine it’s your ride. But you also have to have all your puzzle pieces together. Setup, converter, suspension, etc. The Gurus here have given you the answers. It’s up to you whether or not you want to take it.

Wallace Racing - Converter Slip Calculator

Use more than one calculator to compare & contrast.

I"m not sure why you are "confused". I am listening to all the feedback because I don't have the experience many of you do. Some people have commented that I want to pick a camshaft based on what it sounds like, but what I said was that I want a camshaft that's very streetable and mild at idle more like a stock camshaft. I just wanted to hear some combinations for myself. And yes its important as to what it's like at idle. Yes most turbo cars don't need big cams but I have seen the full spectrum with Turbo Buicks and opinions are all over the place. I don't want something like whats in this car

and yet on the other side the stock cam in not going to work well with the upgrades I want. Because of the feedback in here I have been able to determine that something like the 210/215: "Revolution XR2" Roller Camshaft or equivilent comp cam will work good and something that I can live with on the street.

You say my current setup can get me 11.5 but I have never once said I want to go a certain ET. I want more power and more specifically more torque for the street. People are saying I alluded to wanting to go 9's or low 10's and that I need a cage and suspension etc but I never once mentioned I wanted to achieve a certain ET or Speed other than saying I might go once or twice a year to make a pass or two.

 

[modular46]

Fuckin amen there
It's only when they actually try to get a number they see these things.

What do you recommend for a torque converter for a street setup that's more efficient?

 

[modular46]

In

In this post you are talking about camshafts and eluding to a 9 sec if you wanted to in the "future" with a 6262.
The camshaft and turbo and injectors and converter and suspension must be selected properly to do this future pass if you want.
Also your goal of 650 rwhp is the power range to run 9s.
I have run and tuned on and driven fast combos that inmo had smaller turbos than the motor could handle.
I have found it much easier to put the right size turbo for the job on the car and not overspeed the wheel as they do break
Ask me how I know
I dont think you will hit your 650rwhp on that converter you are running nor with the 6262 turbo.
I would suggest you take a ride in the power level you seek to see if you really want that
As you have spoken about a street car that you dont want to put safety equipment in which means you will be limited to 11.5 which with your current power level should go quicker than that already
If you get another converter.

If you go back to what I said I never mentioned I wanted to run a certain ET or build a car to meet a desired ET/MPH. What I said was Patrick at Precision says the 62-62 turbo is more than enough turbo to get into the 9's if someone wanted that. I only said that because you said the 62-62 wasn't capable of doing that. That's all I meant by that. If my car sees the track it will be to make one pass here or there if I'm at the track for a car show. By no means is this car meant to be competitive on the track or to be a track car. I raced Mod Motor Mustangs for 15 years and I was the first Mod Motor car into the 7's besides John Mihovetz. I been there and done that already. I know what a car takes to run 9's and deep into the 8's even. I don't want to do this with this car as its too nice. It's very a very clean car, absolutely spotless inside and out with only 38K miles. I don't want a roll cage or drag suspension in it as this car will be handed down to my 14 year old son someday and if he ever wants to put it back to stock and sell it for big money some day.

With that said I am all ears about converters. thanks

 

[Pronto]

You can try here. http://www.turbobuickperformance.com/
Your current combo with better converter and correct tune/ suspension could run in the 10s and be a hoot to drive on the street.
In your application, any cam beyond stock will make plenty of power. The 212/212 would work fine. You could go bigger but the power range will start to climb. TBs are well known to do great at in the low to mid 5000s rpm. You seem to have the typical LS/Ford hp goal numbers in your head. The TB is a different animal. I know dozens of local turbo LSs that have 700hp and can't run a 11.5. Same for Mustangs and Mopars for that matter. Have you taken the time to talk to real TB racers and gurus to see what you really need. Patrick is a great guy but the 62/62 will have to be in hands of true TB guru to get in the 9s. The average TB isn't going to get there. A 64/66 would be much better match.

 

[SCOOBY DOO]

LU convertors that can be locked at WOT are the 9/11 and the Precision multidisc. Those are the ones I'm familiar with. If you're using Erics chips he can lock the convertor at WOT via his chip. I know Huseks LU convertor does fairly well unlocked and I think Mr Spool said the Pro Torques do well unlocked. I have a list of real world slip numbers from a host of convertors from cars I know first hand.

If you're bound and determined to put that engine combo together I suggest you PM Mr Spool to spec a convertor, cam and turbo.

If you check my sig, you'll see you can go plenty fast on stock junk. Only thing on that engine was good heads, 6262 and a decent convertor. For suspension all it had was 90/10's up front and QA1 single adjustables out back...and Powerlogger to tune with. On 23 PSI and an easy tune and a pedestrian 1.68 launch it went 7 flat at 100 in the 1/8th all day long and spooled as fast as it took the lights to drop. I have vids on my channel to back my mouth up.

 

[Pronto]

I"m not sure why you are "confused". I am listening to all the feedback because I don't have the experience many of you do. Some people have commented that I want to pick a camshaft based on what it sounds like, but what I said was that I want a camshaft that's very streetable and mild at idle more like a stock camshaft. I just wanted to hear some combinations for myself. And yes its important as to what it's like at idle. Yes most turbo cars don't need big cams but I have seen the full spectrum with Turbo Buicks and opinions are all over the place. I don't want something like whats in this car

and yet on the other side the stock cam in not going to work well with the upgrades I want. Because of the feedback in here I have been able to determine that something like the 210/215: "Revolution XR2" Roller Camshaft or equivilent comp cam will work good and something that I can live with on the street.

You say my current setup can get me 11.5 but I have never once said I want to go a certain ET. I want more power and more specifically more torque for the street. People are saying I alluded to wanting to go 9's or low 10's and that I need a cage and suspension etc but I never once mentioned I wanted to achieve a certain ET or Speed other than saying I might go once or twice a year to make a pass or two.

That's pretty much what all roller cams are going to sound like, solid or hyd.

 

[SCOOBY DOO]

Practicing with these cars is essential. Im up here in Canada, and in early April and October when it was 35 degrees at 4 am in the morning I was out loading my car up on the weekends heading to the track freezing my ass off while the locals were warm in their beds.

 

[modular46]

That's pretty much what all roller cams are going to sound like, solid or hyd.

This car has the 215/220 Revolution XR2 Roller Camshaft and it sounds almost stock to my ears. That 9 second car in the last post sounds very aggressive.

 

[SCOOBY DOO]

Food for thought. Stock cams in these engines have cracked the 9's.

 

[modular46]

Food for thought. Stock cams in these engines have cracked the 9's.

I might have to go that route as cams are impossible to obtain.