HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Class Racer Builds


Reply
 
Thread Tools Display Modes
Old 09-07-2016, 07:10 AM   #31
goinbroke2
Senior Member
 
Join Date: Mar 2002
Location: NS CANADA
Posts: 692
Likes: 536
Liked 169 Times in 55 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Nice!
You don't scrimp on tooling do you! lol

Like they say, if you're gonna do it, do it right.

I too love following your threads.
goinbroke2 is online now   Reply With Quote
Old 09-07-2016, 08:30 AM   #32
HP HUNTER
Senior Member
 
Join Date: Feb 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 606
Likes: 68
Liked 238 Times in 97 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Quote:
Originally Posted by goinbroke2 View Post
Nice!
You don't scrimp on tooling do you! lol

Like they say, if you're gonna do it, do it right.

I too love following your threads.

I really didn't see any other way, considering how many times those heads will be on and off the bench, repeatability will be very important, I should have some as run flow numbers soon.
HP HUNTER is offline   Reply With Quote
Old 09-07-2016, 02:59 PM   #33
goinbroke2
Senior Member
 
Join Date: Mar 2002
Location: NS CANADA
Posts: 692
Likes: 536
Liked 169 Times in 55 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Can't wait, I can imagine some must be concerned with you showing "secrets" lol!
goinbroke2 is online now   Reply With Quote
Old 09-07-2016, 09:20 PM   #34
HP HUNTER
Senior Member
 
Join Date: Feb 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 606
Likes: 68
Liked 238 Times in 97 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Quote:
Originally Posted by goinbroke2 View Post
Can't wait, I can imagine some must be concerned with you showing "secrets" lol!
Not sure about that. Heres the flow numbers on my stock 661 casting heads.

Intake flowed @ 28 inches 4.350 bore SF 600 bench

.200 120
.300 177
.400 207

Exhaust flowed @ 28 inches 4.350 bore SF 600 bench no pipe

.200 95
.300 124
.400 143
.460 149

As you can see I've got a real power maker here.............
HP HUNTER is offline   Reply With Quote
Old 09-09-2016, 05:42 PM   #35
R. Thorne
Member
 
Join Date: May 2009
Posts: 170
Likes: 35
Liked 43 Times in 24 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Where are the flow figures for .100 lift? Are these the heads off the car that have a "normal" 3 angle valve job or untouched as produced at the factory? As my post a few years ago mentioned I improved my low lift flow substantially at the expense of a small amount of loss at .400 lift. This helped my car measurably. Since that time i have done more experimenting with valve jobs, back cuts, etc. with surprising results. The oem valve seat is 45 degrees, right? I would try a 37 degree and lots of experimenting with "different" types of valves. Oh yeah, make sure the heads are cut close to minimum cc's before anything is done (saves surprises later). Ron.
R. Thorne is offline   Reply With Quote
Old 09-09-2016, 08:45 PM   #36
HP HUNTER
Senior Member
 
Join Date: Feb 2012
Location: Colorado Springs Colorado/Thousand Oaks Ca
Posts: 606
Likes: 68
Liked 238 Times in 97 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Quote:
Originally Posted by R. Thorne View Post
Where are the flow figures for .100 lift? Are these the heads off the car that have a "normal" 3 angle valve job or untouched as produced at the factory? As my post a few years ago mentioned I improved my low lift flow substantially at the expense of a small amount of loss at .400 lift. This helped my car measurably. Since that time i have done more experimenting with valve jobs, back cuts, etc. with surprising results. The oem valve seat is 45 degrees, right? I would try a 37 degree and lots of experimenting with "different" types of valves. Oh yeah, make sure the heads are cut close to minimum cc's before anything is done (saves surprises later). Ron.
Great information, thanks, I will look for your thread.
HP HUNTER is offline   Reply With Quote
Old 09-09-2016, 10:40 PM   #37
Glenn Briglio
VIP Member
 
Glenn Briglio's Avatar
 
Join Date: Nov 2002
Location: Massapequa Park,NY
Posts: 1,205
Likes: 1,719
Liked 819 Times in 263 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Quote:
Originally Posted by R. Thorne View Post
Where are the flow figures for .100 lift? Are these the heads off the car that have a "normal" 3 angle valve job or untouched as produced at the factory? As my post a few years ago mentioned I improved my low lift flow substantially at the expense of a small amount of loss at .400 lift. This helped my car measurably. Since that time i have done more experimenting with valve jobs, back cuts, etc. with surprising results. The oem valve seat is 45 degrees, right? I would try a 37 degree and lots of experimenting with "different" types of valves. Oh yeah, make sure the heads are cut close to minimum cc's before anything is done (saves surprises later). Ron.
Yes pay attention at low and mid lifts!!!!
Glenn Briglio is offline   Reply With Quote
Old 09-09-2016, 11:29 PM   #38
kansas stocker
Member
 
Join Date: Oct 2002
Location: kansas
Posts: 229
Likes: 413
Liked 223 Times in 43 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Maybe I'm missing something here. I thought valve seat angles had to be within 1 degree of the factory angle.
Pete
kansas stocker is offline   Reply With Quote
Old 09-10-2016, 02:11 PM   #39
R. Thorne
Member
 
Join Date: May 2009
Posts: 170
Likes: 35
Liked 43 Times in 24 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

That 1 degree refers to the valve inclination angle (I.e. the angle of the valve stem in the guide), not the valve seat angle. Any valve job is permitted as of (I think) 2009 in stock eliminator. Ron.
R. Thorne is offline   Reply With Quote
Old 09-10-2016, 03:57 PM   #40
kansas stocker
Member
 
Join Date: Oct 2002
Location: kansas
Posts: 229
Likes: 413
Liked 223 Times in 43 Posts
Default Re: 1971 Buick 455 GS F/SA G/SA Build

Thanks. That changes my line of thinking.
Pete
kansas stocker is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 09:24 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.