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11-20-2022, 10:07 AM
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#1 |
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Member
Join Date: Mar 2013
Location: Italy, Texas
Posts: 176
Likes: 365
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Sbc headers.
Anybody ever try a header with a flat 4 collector anstead of square 4? Just wondering if it is a good or bad idea.
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11-20-2022, 10:26 AM
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#2 |
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VIP Member
Join Date: Oct 2002
Location: On a hilltop in Pa.
Posts: 4,481
Likes: 3,579
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Re: Sbc headers.
It's been tried, not such a good idea.
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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11-20-2022, 11:43 PM
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#3 |
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Senior Member
Join Date: Mar 2002
Location: Woodburn, Or
Posts: 680
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Re: Sbc headers.
I have used them but only for ground clearance issues. No way this is going to improve performance.
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11-21-2022, 05:22 AM
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#4 |
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VIP Member
Join Date: Apr 2012
Location: Connecticut
Posts: 1,125
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Re: Sbc headers.
On the subject of collectors, I have a pair of 4-2-1`s. I thought about merging them to a cheap set of headers. Thoughts ?
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11-21-2022, 08:26 AM
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#5 |
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VIP Member
Join Date: Oct 2002
Location: On a hilltop in Pa.
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Re: Sbc headers.
If you can get them phased correctly they may show you something.
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Billy Nees 1188 STK, SS I'm not spending 100K to win 2K |
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11-23-2022, 12:27 PM
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#6 | |
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Veteran Member
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,791
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Re: Sbc headers.
Quote:
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"We are lucky we don't get as much Government as we pay for." Will Rogers |
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11-23-2022, 06:57 PM
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#7 | |
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VIP Member
Join Date: Apr 2012
Location: Connecticut
Posts: 1,125
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Re: Sbc headers.
Quote:
Have you tried them? I got a pair from Wojo when I got his old wagon.. He said he never used them. I did put longer collectors on, per Al Peters, and that was worth .05 I expect it would pick up the bottom, but how much? |
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11-25-2022, 08:31 PM
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#8 | |
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Member
Join Date: Oct 2020
Posts: 269
Likes: 3,723
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Re: Sbc headers.
Quote:
I'm still using my Flowmaster 4-2-1 collectors, be for warned if you're going to use them with a " tight " lobe seperation , they don't work well with that. The flowmasters seem to like a little wider lobe seperation angle. The Burns style collector works better with a tight lobe seperation. At least tha'ts what I've found over the years, and you have to try some adjustments to get everything from them. Respectfully, Henry Kunz 1534 H/SA 
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11-26-2022, 10:29 AM
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#9 |
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Senior Member
Join Date: Jan 2005
Location: Alpine, NJ
Posts: 568
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Re: Sbc headers.
I was going to recommend a consult with Billy Nees.. BUT, it kinda sounds like he's been there, done that...
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11-29-2022, 02:40 PM
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#10 |
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Member
Join Date: Dec 2009
Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66
Posts: 313
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Re: Sbc headers.
Greg, at REF in Kingman, AZ says: they work for low comp. motors. not so good on higher comp. he said the 305/307 Chevy and small Olds engines would be OK, but not at real high RPM. [although, I dont know what high RPM would be in those]
Rod in AZ |
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