SBC Bowtie phase 2 head question.
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there was also the Bulge on the outsideBrian B wrote:I just remember being told from GM that
Phase I were with the casting seam between
ex ports..and Phase II were the machine
seam between ex ports...
Brian B
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and increased chamber wall thickness
the 1st #034 Bowtie i saw was at Brodix
GM sent him that sectioned piece or a casting to look at
i asked JV what was a cast-iron head doing at Brodix ??
you can see there's no water jacket bulge-out
I just looked over my heads pretty good again. They do have the bulge on them. Also, there is 8/11/92 cast on to them in the spring area. These heads have a few years on them! hahaha
Larry, the flow numbers you posted... was that for the heads I have now or was that what you have been able to do with that head?
Jody
Larry, the flow numbers you posted... was that for the heads I have now or was that what you have been able to do with that head?
Jody
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JODY wrote:I just looked over my heads pretty good again. They do have the bulge on them. Also, there is 8/11/92 cast on to them in the spring area. These heads have a few years on them! hahaha
Larry, the flow numbers you posted... was that for the heads I have now or was that what you have been able to do with that head?
Jody
yes, that's about the maximum Flow Numbers you could expect
out of those Heads if you maxed them out,
but those heads are 15-17 years of dragracing on them
nowdays, you could buy a much better pair of alum heads
and make more HP for what it would take to get
320's CFM out those Heads
on your Heads , i'm 100% positive i never ported Scott a maxed out
pair...so your Heads are around 265 cfm to 290 cfm max
..maybe even less as someone might have had a valve job
done over those 15-17 years
Re: SBC Bowtie phase 2 head question.
Larry,
I got the heads pulled apart. Looks like they hve been fully ported some time in their life. The roof of the runners have been smoothed out flat even aroud the valve guide. No blending around the valve at all. Does this sound like something you would have done years ago?
I can post pictures if you need to see what I'm talking about.
JODY
I got the heads pulled apart. Looks like they hve been fully ported some time in their life. The roof of the runners have been smoothed out flat even aroud the valve guide. No blending around the valve at all. Does this sound like something you would have done years ago?
I can post pictures if you need to see what I'm talking about.
JODY
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Re: SBC Bowtie phase 2 head question.
Great pics Larry, thank you for sharing , mainly the prohibited pics
'71 Z28 street strip car
Pump gas All motor SBC 427
3308 lbs-29x10.5 Hoosiers
NEW BEST ET
1.38 60' / 4.05 330' / 6.32@111.25mph
https://www.youtube.com/watch?v=99p13UK ... ture=share
Pump gas All motor SBC 427
3308 lbs-29x10.5 Hoosiers
NEW BEST ET
1.38 60' / 4.05 330' / 6.32@111.25mph
https://www.youtube.com/watch?v=99p13UK ... ture=share
Re: SBC Bowtie phase 2 head question.
After I reread my post, I think I might need to make it a little clearer. The roof of all the runners have been smoothed to the point that the valve guide does not extend down into the runners. The only obstruction in the runner is the valve stem.
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Re: SBC Bowtie phase 2 head question.
i just noticed this Thread....JODY wrote:Larry,
I got the heads pulled apart. Looks like they hve been fully ported some time in their life. The roof of the runners have been smoothed out flat even aroud the valve guide. No blending around the valve at all. Does this sound like something you would have done years ago?
I can post pictures if you need to see what I'm talking about.
JODY
Sure, i'd like to see the Pics.
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Re: SBC Bowtie phase 2 head question.
POST PICS!!!!
1985 original SILVER Metallic Camaro IROC-Z
1995 ZX-11 NINJA_ Muzzy exhaust and Polished EVERYTHING!
1995 ZX-11 NINJA_ Muzzy exhaust and Polished EVERYTHING!
Re: SBC Bowtie phase 2 head question.
Heads are at the machine shop to change out some valve guides and get a valve job. I work till 6 every day and they close at 5... I'll see if I can get a buddy of mine to get over there and snap a few pictures.
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Re: SBC Bowtie phase 2 head question.
Note : one of the Brodix Factory pics is in the year 1990
some of the other Brodix Pics are earlier
i've been to Brodix 3 different times
almost stopped by Brodix again in 2015 .. back from Des Moines, Iowa at SuperFlow
... but they had a bunch of worker's vehicles everywhere ...couldn't find a parking spot
they must be super busy
some of the other Brodix Pics are earlier
i've been to Brodix 3 different times
almost stopped by Brodix again in 2015 .. back from Des Moines, Iowa at SuperFlow
... but they had a bunch of worker's vehicles everywhere ...couldn't find a parking spot
they must be super busy
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Re: SBC Bowtie phase 2 head question.
maxracesoftware wrote: ↑Sat Apr 21, 2018 11:50 pm Note : one of the Brodix Factory pics is in the year 1990
some of the other Brodix Pics are earlier
i've been to Brodix 3 different times
almost stopped by Brodix again in 2015 .. back from Des Moines, Iowa at SuperFlow
... but they had a bunch of worker's vehicles everywhere ...couldn't find a parking spot
they must be super busy
Old thread i know, but you didnt bring it back up that long ago.... im gutted i didnt get to see the pics.. especially the prohibited ones....
To be honest im mega gutted the pics of all your old 292 461 heads are now gone from all them threads you put em on too...