Confused about header sizes
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Confused about header sizes Ok, the LS1 starts out as a 346. And even the LS2 is only a 364. So SBC sizes like 1.75 and 1.875 seem about right.
However, there are a lot of 408, 427, 434, 441, and 447 LS1s also. Chevy big block sizes are more like 2 and 2.125".
Does anyone make/use headers like that on their LS1? How would you ever get them in an F-body or Y-body?
Thanks,
David
However, there are a lot of 408, 427, 434, 441, and 447 LS1s also. Chevy big block sizes are more like 2 and 2.125".
Does anyone make/use headers like that on their LS1? How would you ever get them in an F-body or Y-body?
Thanks,
David
For stock cubes 1-3/4" is the best size primary, for bigger cubes 1-7/8" will really help the engine breathe. I don't believe there are any bigger, nor would you need bigger for the LSX platform.
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Originally Posted by DrkPhx
For stock cubes 1-3/4" is the best size primary, for bigger cubes 1-7/8" will really help the engine breathe. I don't believe there are any bigger, nor would you need bigger for the LSX platform.
Thread Starter
TECH Resident
Joined: Dec 2004
Posts: 881
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Originally Posted by DrkPhx
For stock cubes 1-3/4" is the best size primary, for bigger cubes 1-7/8" will really help the engine breathe. I don't believe there are any bigger, nor would you need bigger for the LSX platform.
