What length injectors do I need?
#1
Staging Lane
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What length injectors do I need?
I am upgrading to LS3 heads and intake from LS6 heads and intake, but I plan on reusing my aftermarket fuel rail. Does the intake or the rail itself determine the injector height? Will LS1/LS6 stuff work on all intakes if you use LS1 mounting height rails?
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Staging Lane
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I guess what my question is, is the factory LS1 and LS6 rail use the same injector hole to mounting flange height? Anyone have pics of each rail? I just need to know If I put my ls1 aftermarket rails on the ls3 intake, if itll need ls3 or ls1 length injectors
#6
Staging Lane
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in order for you to lower the rail, youll need to get shorter injectors
#7
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All I have to do is shorten the blocks on the fuel rail mounting tabs and I should be good?
Also since I have a LS1/6 do I need a different harness to fit the LS3/7 injector electrically?
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#8
Staging Lane
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That is the point of my question. Once the injectors are purchased will they fit in my LS1 cathedral port intake as well as the aftermarket LS1 fuel rails (o-ring size specifically)?
All I have to do is shorten the blocks on the fuel rail mounting tabs and I should be good?
Also since I have a LS1/6 do I need a different harness to fit the LS3/7 injector electrically?
All I have to do is shorten the blocks on the fuel rail mounting tabs and I should be good?
Also since I have a LS1/6 do I need a different harness to fit the LS3/7 injector electrically?
#10
FormerVendor
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The fuel rail ports should be the same diameter, and intake ports should be similar...I believe the LS3/7 are a fraction of a millimeter wider. The o-ring we use for the LS3/7 injector is a fraction thicker than the LS1/6 o-ring we supply.
The questions I have would be if the ports are spaced the same or close enough between the two head/IM designs and if there is enough adjustability in the way the fuel rails mount to make up for the 1" difference in height.
The questions I have would be if the ports are spaced the same or close enough between the two head/IM designs and if there is enough adjustability in the way the fuel rails mount to make up for the 1" difference in height.
#14
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Well, just as I suspected. they did not fit.
The ls1 style injectors in the pic are too loose as previously stated. the ls3 intake has a little too much room for the o-rings. the height is off, but more importantly, the spacing for the mounting bolts is different. the frontmost mounting biolt on the ls3 intake is moved forward from the ls1/ls6 style
this stuff is never easy
The ls1 style injectors in the pic are too loose as previously stated. the ls3 intake has a little too much room for the o-rings. the height is off, but more importantly, the spacing for the mounting bolts is different. the frontmost mounting biolt on the ls3 intake is moved forward from the ls1/ls6 style
this stuff is never easy