406 sbc build need cam advice - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-02-2005, 07:49 AM
Member
 
Last photo:
Join Date: Sep 2004
Location: NY
Age: 50
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
406 sbc build need cam advice

Here is the deal:
I am Building up a 406 - almost completed.
Stock 1969 camaro body and interior,
AFR 195 cc Heads
RPM Air Gap intake
Holley 650 DP will change to 750 in future
Hooker super comp 1 3/4" headers
Dr gas x pipe
Muncie M20 4 spd
3:73 rear
26" tall tire

I am looking for 450 - 500 hp.

It is a street cruiser - want vacuum for power breaks and all accesories. Do not want it to be soggy on the street down low. My engine builder and I discussed camming options (hydrolic roller, Solid Roller, Solid or hydrolic) Although he likes a solid roller he did not think it was necessary to go with a solid roller for my applications but he seemed to lean towards a solid flat tappet.

1) What are your suggestions on the type of came for the street (ie Solid).
2) What duration and lift would you suggest - include LSA


Also, what e.t.s do you think I can make on street tires.
Thanks
TG
Reply With Quote

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-02-2005, 08:59 AM
Hotrodders.com Moderator
 

Last journal entry: PICTURE TEST
Last photo:
Join Date: Jan 2004
Location: york pa
Age: 52
Posts: 2,795
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
cam

What pistons??

What deck height???

What are the chamber cc's of your heads???

I only ask to get some what of a idea about your static compression....

We need this to make a cam recommendation...

Keith
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-02-2005, 09:08 AM
Member
 
Last photo:
Join Date: Sep 2004
Location: NY
Age: 50
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Compression 10.5:1
Chamber cc's 64cc
Do not know deck height or type of piston - would have to consult with builder on this.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-02-2005, 09:26 AM
Hotrodders.com Moderator
 

Last journal entry: PICTURE TEST
Last photo:
Join Date: Jan 2004
Location: york pa
Age: 52
Posts: 2,795
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
engine

A word of caution here...

If you are running a 64 cc head , with a 10 cc head gasket you will need a piston with a cc volume of 14 cc to get 10.49:1 compression..... So i hope your pistons are of a dished design?????

What is the most important to you????? How fast it is or how well it drives on the street??? Only choose one... L.O.L.

Keith
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-02-2005, 09:42 AM
Member
 
Last photo:
Join Date: Sep 2004
Location: NY
Age: 50
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Both! - LOL

I want it to be streetable where I can run power brakes and all accesories. My last cam was a 230/236 duration on a 110 in a 355. I seemed to like the way that idled. I dont think It want to go more than a 108 lsa. It is a weekend cruiser, I do not want it to be a difficult to drive on the street.

Considering this - I want to get as much out of it as possible.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 05-02-2005, 10:05 AM
NXS's Avatar
NXS NXS is offline
wind & fire = guides to power
 
Last photo:
Join Date: Nov 2004
Location: Oklahoma
Posts: 1,534
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Look towards a Comp 282S. It is the best choice for a flat tappet application.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 05-02-2005, 10:29 AM
Member
 
Join Date: Dec 2004
Location: Madison, WI
Posts: 1,885
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Just to give you a feel, we dynoed a 383 with similar specs that had a CompCam 264HR (hydraulic roller) installed and it made 360 HP, at the rear wheels. That well into the 450 range at the flywheel. Car was an automatic, 700R4.

For a 400 I would consider something along the lines of a CompCam 276HR. That has about 224/230 duration at .050 and .536 lift with 1.6 rockers. AFR heads love lift. If you want to custom grind a cam use about that duration and get them to grind more lift if possible, .550 to .560 would be great. The duration will keep the car very streetable and meet your goals. The Comp cam is just an easy example of the type of grind I think would make you happy. Crane, Howard, Elgin, Lunati can all grind a came similar. I think you'd find it worthwhile to invest in the roller setup.

I agree that you want to stay away from a solid roller unless you are ready to inpect the vlavetrain and lifters every year. It is highly recommended that the rollers be inspected closely for bearing wear.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 05-02-2005, 10:38 AM
Member
 
Last photo:
Join Date: Sep 2004
Location: NY
Age: 50
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What about solid flat tappet?
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 05-02-2005, 11:12 AM
Hotrodders.com Moderator
 

Last journal entry: PICTURE TEST
Last photo:
Join Date: Jan 2004
Location: york pa
Age: 52
Posts: 2,795
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
cam

Nothing wrong with a solid flat tappet cam...

how many miles do you drive this car per year?????

Keith
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 05-02-2005, 11:18 AM
Member
 
Last photo:
Join Date: Sep 2004
Location: NY
Age: 50
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
If I put 2.5 - 3,000 miles on it it would be a lot. I never owned a car with a solid in it. Is maintenance a pain in the ***, How often? Are they Noisey? My builder is a big fan of Solids - He seemed to lean that way.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 05-02-2005, 11:32 AM
firestone's Avatar
http://teamrfc.gospelcom.net
 
Last photo:
Join Date: Nov 2003
Location: Fenton MI
Age: 32
Posts: 1,743
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
If you wanted to go solid, I would go with the XS276S (236 242 @.050 .501 .510 lift 110 lsa) with a set of 1.6 rockers. If you have the money, and are going solid anyway, I would recommend a solid roller, you will make more hp. Either way, you will be setting valve lash. I think the XR274R(236 242 @.050 .570 .576 lift 110 lsa) would be a good mech roller. You could go bigger, but I think it may start to have noticeable effects on power accessories. As far as solids go, if you run a stud girdle, you probably wont have to set them that often. I run a car with a solid roller, and they seem to stay in place pretty well. It is hard to say what your car would run on street tires, but I would think that this setup would put you solidly in the 11's with some slicks.

Adam
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 05-02-2005, 11:44 AM
Member
 
Join Date: Dec 2004
Location: Madison, WI
Posts: 1,885
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Solids are maintenance as you'll want to check lash on a regular basis, although the low mileage you will put on might mean twice a year. So no big deal.

BUT, look at your choices based on the head you have purchased. Ask yourself why you spent $1300 on a set of cylinder heads that flow to .600 and why you would not want to match that capability with the camshaft? You wll give up a lot of benefit in the head if you lift it less than .500 lift. As I mentioned before, AFR heads love lift. A hyd roller will lift the valve much faster providing much better performance compared to a solid flat tappet.

It's more money for sure but you'll have no maintenance, better driveablity and better overall power.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 05-02-2005, 11:48 AM
Hotrodders.com Moderator
 

Last journal entry: PICTURE TEST
Last photo:
Join Date: Jan 2004
Location: york pa
Age: 52
Posts: 2,795
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Cam

Boy you are going to get all kinds of answers to this deal.......

I personally have not had problems with solid roller cams on street driven engines. If you are sure that you are going to put 3k a year on it i would go with a flat tappet cam tho..... If you have the correct valve train they need very little in the way of maintenance. I have gone a entire summer and never had the valve covers off. Thats 25/35 1/4 mile passes and maybe 1000 street miles....I have customers that run there engines even harded then that with no adjustments......

As for the cam numbers... as a compromise to your needs i would go with a cam that was 240@.050 dur. If my memory serves those heads have a good intake to exhaust ratio for flow and you shouldn't need a split cam for them... I would go with a 110 lsa. That cam installed at 4 degrees advanced will give you a cylinder pressure of about 180 PSI. If you have a 10.5:1 static compression........... That will be good with pump gas.....

Keith
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 05-02-2005, 11:49 AM
Member
 
Last photo:
Join Date: Sep 2004
Location: NY
Age: 50
Posts: 87
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Can I get a Solid cam with a 550 lift with a low 240' in duration?
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 05-02-2005, 12:00 PM
Hotrodders.com Moderator
 

Last journal entry: PICTURE TEST
Last photo:
Join Date: Jan 2004
Location: york pa
Age: 52
Posts: 2,795
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
cam

With out looking in a catalog i cannot tell you for sure but i would not see why not....

Rick wi might be able to give some more info on the lift.... I am new to the cylinder head flow vs real world hp deal but i personally have not seen it make much of a difference in a heavy car... Meaning if you can get a cam with all the numbers and only .525 lift. The same cam with the same numbers and .550 lift will not make much of a difference in 1/4 mile performance in a heavy car..... But once again this is just what i have seen......

Keith
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wanna build a SBC 302. Need Help!!! Super Chevy Hotrodding Basics 10 03-12-2011 10:37 AM
SBC 350 superiority rebuttle...was:POWERED BY CHEVY, WRITTEN ON A FORD, (from 'Engine Oldsmolac911 Hotrodders' Lounge 50 01-12-2011 10:00 PM
My sbc 400 build up, please review Guitar Charlie Engine 13 06-17-2004 08:06 AM
Sbc 406 sb72elcamino350 Engine 9 03-05-2004 11:59 AM
79 CJ 5: SBC or Stock Build Up? mav79 Engine 7 08-20-2003 10:28 PM


All times are GMT -6. The time now is 04:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.