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Angled vs Straight Plug

Old Sep 16, 2002 | 09:30 AM
  #1  
Mark A Shields's Avatar
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Car: 99 Formula
Engine: LS1
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Angled vs Straight Plug

I've been lookin at getting some heads and notice that you can get new heads with either of the above choices. Angled seems to make changing the plugs easier and routing the wires easier. Am I missing something, I mean why would anyone buy straight when they could get angled?
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Old Sep 16, 2002 | 09:41 AM
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angled will show a slight hp increase when compression is over 11 to1

(at least that was the old school thinking).

In most cases, header and plugwire clearance is actually worse than straight. Headers should be specific for angle plugs.

PS, hooker supercomps are designed for angle-p.
Number 3cyl is still very close and will not fit some wire sets.

90degree boots are a must.

Last edited by jcb999; Sep 16, 2002 at 10:02 AM.
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Old Sep 16, 2002 | 09:47 AM
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Isn't it true that some headers were designed to give you plug clearance with straight plug heads, and that design very much gets in the way of angle plug heads?
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Old Sep 16, 2002 | 09:52 AM
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There are issues with headers. Search the boards, you will find TONS of unhappy people who bought the wrong version.
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