Lunati or Clay Smith Hyd. Roller Cam for 463 BBC - Chevelle Tech
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post #1 of 44 (permalink) Old Jan 4th, 20, 10:14 AM Thread Starter
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Wes
 
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Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

I am building a 454 bored 40 over, will have approx. 9.7 comp ratio with 049 heads with 2.19/1.88 valves that have been unshrouded no porting, air gap intake manifold. This is what I am trying to achieve, not necessarily looking to make max torque or max HP. Car is a 69 Chevelle with a 700R4, 3.73 rear gear. This is just a cruiser not going to race.

1. torque converter wanting to stay under 2500 stall (or that's what I am thinking)
2. have good power along with good street manners
3. wanting to go EFI, (something like the Holley Sniper)

Cam #1 (Lunati Hyd. Roller)
Advertised Duration (Int/Exh): 290/300
Duration @ .050 (Int/Exh): 232/242
Gross Valve Lift (Int/Exh): .578/.585
LSA/ICL: 112/110

Cam #2 ( Clay Smith Hyd. Roller)
Advertised Duration - 288/300
Duration @ .050 - 229/241
Lift .590/.570
Centers 105/113
LSA 109

Your thoughts on one of these? (or something different)
Thanks Wes
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post #2 of 44 (permalink) Old Jan 4th, 20, 11:38 AM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by RR24 View Post
I am building a 454 bored 40 over, will have approx. 9.7 comp ratio with 049 heads with 2.19/1.88 valves that have been unshrouded no porting, air gap intake manifold. This is what I am trying to achieve, not necessarily looking to make max torque or max HP. Car is a 69 Chevelle with a 700R4, 3.73 rear gear. This is just a cruiser not going to race.

1. torque converter wanting to stay under 2500 stall (or that's what I am thinking)
2. have good power along with good street manners
3. wanting to go EFI, (something like the Holley Sniper)

Cam #1 (Lunati Hyd. Roller)
Advertised Duration (Int/Exh): 290/300
Duration @ .050 (Int/Exh): 232/242
Gross Valve Lift (Int/Exh): .578/.585
LSA/ICL: 112/110

Cam #2 ( Clay Smith Hyd. Roller)
Advertised Duration - 288/300
Duration @ .050 - 229/241
Lift .590/.570
Centers 105/113
LSA 109

Your thoughts on one of these? (or something different)
Thanks Wes
Think either will work and fill your needs, dont think there will be any noticeable difference in a streetcar but with fuel injection wider lsa is considered to be better.

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post #3 of 44 (permalink) Old Jan 4th, 20, 11:49 AM
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Kerry
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

IMO the Lunati is a touch big for what you want. Stay under 230 degrees @.050" intake duration. Look at the Isky 228/238 Hyd roller if you don't want the Clay Smith cam.
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post #4 of 44 (permalink) Old Jan 4th, 20, 12:12 PM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

I would go with Chrisís (Straub) recommendation. Tell him what you want to achieve.
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461" BBC 11.25:1 Compression
840 Rec Heads (2.25/1.88) AED 850 HO carb
Orig Exhaust Manifolds
Straub (Clay Smith) Hyd Roller cam, .050 229/241 .600/.569 109.
TH400, 3500 stall, 4.11 12 bolt posi
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post #5 of 44 (permalink) Old Jan 4th, 20, 12:48 PM
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Gene
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Wes, Kerry and I are familiar with this cam, for your consideration sir :

CAM #3

https://iskycams.com/shop/index.php?...oducts_id=1162



The Clay Smith cam is designed for the poor ex ports of the oem heads so would be my choice #2, and I'd guess Mr Straub or others can assure you it'd work an EFI system properly.

Gene
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post #6 of 44 (permalink) Old Jan 4th, 20, 1:29 PM Thread Starter
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Wes
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Thanks guys for your comments and recommendation, I'll look into that Isky cam.

Also something else I just thought about, do you guys see any issue with running this engine with any of the cams discussed on 91 octane pump gas?
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post #7 of 44 (permalink) Old Jan 4th, 20, 4:55 PM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by pockets View Post
IMO the Lunati is a touch big for what you want. Stay under 230 degrees @.050" intake duration. Look at the Isky 228/238 Hyd roller if you don't want the Clay Smith cam.
How about the ZZ502 cam ? 224/234 @ ~.540 lift
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post #8 of 44 (permalink) Old Jan 4th, 20, 5:57 PM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Wes,
What do Lunati and Clay Smith recommend ?
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post #9 of 44 (permalink) Old Jan 4th, 20, 6:30 PM Thread Starter
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Wes
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by BillK View Post
Wes,
What do Lunati and Clay Smith recommend ?
Bill, I haven't talked to either of them, was trying to pick what I thought would work and see what folks thought on here.
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post #10 of 44 (permalink) Old Jan 4th, 20, 6:33 PM
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Bill
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Go to LUNATI website ~ Click on VOODOO series.

These cams were some of the last of UD Harold's favorite creations.
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post #11 of 44 (permalink) Old Jan 4th, 20, 6:52 PM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by RR24 View Post
Bill, I haven't talked to either of them, was trying to pick what I thought would work and see what folks thought on here.

I knew that Pick a manufacturer and CALL them (no e-mail) . Tell them every little detail about your car and engine and how you plan on driving it. Let them tell you what camshaft you need. Then buy it.


Unless somebody has the SAME EXACT combination as you they are just guessing. Even if they do have the same combination they might not be getting all of the performance they should.



I have been in the engine business for 30 years and actually built my first engine in 1973. I have NEVER tried to pick a camshaft for a performance or racing engine. I am not a cam designer and dont want to be. I have pretty much used the same two cam companies for the last 30 years and have not been disappointed with any of their recommendations.



Thats my story ........
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Bill Koustenis
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post #12 of 44 (permalink) Old Jan 4th, 20, 6:53 PM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by Tarheel Chevelle View Post
Go to LUNATI website ~ Click on VOODOO series.

These cams were some of the last of UD Harold's favorite creations.
BINGO!!! I fully agree. My brother has a mild 400HP 67 Chevelle, and when Harold Brookshire was still alive, he took my advice and called Harold up to get a custom cam from him, and to this day he says his car runs better than it ever did with that cam. Harold designed all of the Lunati "Voodoo": camshafts. You sholud call Lunati and ask to talk to their Tech guy Steve Slavik and tell him you want a camshaft recommendation. Steve is a good guy. He will help you out.

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post #13 of 44 (permalink) Old Jan 4th, 20, 10:09 PM Thread Starter
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Wes
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by BillK View Post
I knew that Pick a manufacturer and CALL them (no e-mail) . Tell them every little detail about your car and engine and how you plan on driving it. Let them tell you what camshaft you need. Then buy it.


Unless somebody has the SAME EXACT combination as you they are just guessing. Even if they do have the same combination they might not be getting all of the performance they should.



I have been in the engine business for 30 years and actually built my first engine in 1973. I have NEVER tried to pick a camshaft for a performance or racing engine. I am not a cam designer and dont want to be. I have pretty much used the same two cam companies for the last 30 years and have not been disappointed with any of their recommendations.



Thats my story ........
Sounds like a good idea Bill
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post #14 of 44 (permalink) Old Jan 7th, 20, 1:23 PM
 
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

I designed the 229/241 for OEM heads....works very well with OEM heads or Brodix heads. Doesn't work with AFR heads.

Chris Straub
Mfg Performance Parts

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Why is it we never have time or money to do it the right way in the beginning but we always have time and money to do it over again?
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post #15 of 44 (permalink) Old Jan 7th, 20, 1:48 PM
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Re: Lunati or Clay Smith Hyd. Roller Cam for 463 BBC

Quote:
Originally Posted by cstraub View Post
I designed the 229/241 for OEM heads....works very well with OEM heads .......
All of them? I have a set of 291 w/larger valves.
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