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Old 09-02-2016, 02:00 PM   #21
Dion Hildebrandt
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

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Originally Posted by Dan Fahey View Post
Suggestion.
Check out Dick Millers website regarding your type suspension.

D
Been there done that, it is good street car stuff.
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Old 09-06-2016, 08:48 AM   #22
HP HUNTER
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

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Originally Posted by Chuck Garey View Post
Just wondering where you got the car? I ran the same combo in the past I have a good set of 71 heads TA SS valves with Poston springs off the car along with a few other parts. I am located in Texas now formally Va.
A few years back I bought the car from a gentlemen in Wisconsin, he bought the car from Lyn Smith. I'am looking for virgin 661 and 149 casting heads, not easy to come by and 403 intakes.
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Old 09-06-2016, 09:45 AM   #23
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

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Originally Posted by goinbroke2 View Post
and your questioning his integrity why?...........

Different valve angles and seat width effect flow, and that's just as two examples of what he meant by "work on the heads". There are many more legal things to do before resorting to "port the heads and cover it up" as you're insinuating.

Uncalled for imho, there are a lot of people with a lot of equipment, doesn't mean they must be cheating because they have fancy tools.
OOPS. I actually didn't mean to insinuate he was cheating just a poorly stated question.

the correct question you answered though(thank you) basicly should've stated how much and what can you do with in the confines of a valve job to find gain, and the statement about the tools was just meant to mean he seams to have the tools at his disposal to play with valve jobs and test effects,and if i'm correct from his other post hp hunter also really seams to know what he's doing when it comes to building engines and making power, so i tend to watch his post there normally interesting.

the other part of this i find interesting is that i've read that low lift flow isn't always a good thing do to the possibility of reverse flow during the overlap period or stopping intake flow too soon. but in a stocker with a .390 ish lift limitation low lift is all you have so i guess you get all you can.
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Old 09-06-2016, 11:39 AM   #24
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

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Originally Posted by HP HUNTER View Post
How would your intake valve job look like on a .398 lift? Anyone.........
25* seat angle on intake with a narrow .070 seat because of so little lift.
20 top/25 seat/45 below and 70 in the throat. Make the 20 plenty big(not to the point of unshouding, lol) then deck to bring back cc's.
Instead of a 30* backcut on the valve(normal with a 45 seat), with a 25 seat, cut back 15-20* instead, basically anything to break the edge.
This works on sbf, not sure of the chamber clearance on a BBC or Pontiac/Buick etc.
HP Hunter, is this the type of answer you're looking for?

pfordamx, low lift is always good as the valve goes past it twice and more time is spent at that point then at the peak which most seem to focus on. I've never heard of (better or more) low lift not being a good thing, ever, but I'm willing to listen/learn from others...with validation and testing of course.
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Old 09-06-2016, 12:59 PM   #25
pfordamx
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

i have no independent testing to back that up i've just read the discussion quite a bit on speedtalk but more ways to prevent the port from flowing in reverse then limiting low lift flow but consequently i would think those two things would almost come hand in hand.

and HP hunter i really didn't intend any offense i enjoy your post.
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Old 09-06-2016, 01:09 PM   #26
Chuck Garey
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

I have a set of virgin 149 heads make me an offer
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Old 09-06-2016, 08:36 PM   #27
HP HUNTER
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

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Originally Posted by Chuck Garey View Post
I have a set of virgin 149 heads make me an offer
Please send me your phone number, thanks.
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Old 09-06-2016, 08:40 PM   #28
HP HUNTER
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

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Originally Posted by pfordamx View Post
i have no independent testing to back that up i've just read the discussion quite a bit on speedtalk but more ways to prevent the port from flowing in reverse then limiting low lift flow but consequently i would think those two things would almost come hand in hand.

and HP hunter i really didn't intend any offense i enjoy your post.
There was never any offense taken

Last edited by HP HUNTER; 09-06-2016 at 08:48 PM.
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Old 09-06-2016, 08:43 PM   #29
HP HUNTER
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

Quote:
Originally Posted by goinbroke2 View Post
25* seat angle on intake with a narrow .070 seat because of so little lift.
20 top/25 seat/45 below and 70 in the throat. Make the 20 plenty big(not to the point of unshouding, lol) then deck to bring back cc's.
Instead of a 30* backcut on the valve(normal with a 45 seat), with a 25 seat, cut back 15-20* instead, basically anything to break the edge.
This works on sbf, not sure of the chamber clearance on a BBC or Pontiac/Buick etc.
HP Hunter, is this the type of answer you're looking for?

pfordamx, low lift is always good as the valve goes past it twice and more time is spent at that point then at the peak which most seem to focus on. I've never heard of (better or more) low lift not being a good thing, ever, but I'm willing to listen/learn from others...with validation and testing of course.
This is something I can sink my teeth in.........I will give it a try on my test head..........thanks.




"pfordamx, low lift is always good as the valve goes past it twice and more time is spent at that point then at the peak which most seem to focus on. I've never heard of (better or more) low lift not being a good thing, ever, but I'm willing to listen/learn from others...with validation and testing of course"


But at the same time you have to consider where the piston is..................

Last edited by HP HUNTER; 09-06-2016 at 08:47 PM.
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Old 09-06-2016, 09:06 PM   #30
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Default Re: 1971 Buick 455 GS F/SA G/SA Build

Some very important tooling showed up today!
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