You'll be glad you did. Pay now or pay later.

So I have been doing lots of research and found that the overall price difference between a good set of SBC manifolds/headers and the cheapest manifolds for an LS I can find are not that far appart... I am starting to look more and more at the LS's as my future powerplant. Start off running a N/A and eventually slap on a twin screw diy kit.

What do you guy's think of these types of spacers for the O2 sensor's ?

http://www.chelseacoachworks.com/ima...od/355_074.jpg

have you use the o2 like that?its a little to close for the intended operating egt temp the sensor is rated for.sensors like 900° max,its all about them being accurate and the heater circuit inside the cal chip needs that certain temp range.I'd put the densor farther down stream.

Thanks Sutphen , I think the same also. This is not my setup it's a company that offers this online. I would also like to move it down further on the setup.

Do any of the manifolds offered have good provisions for an O2? I think I recall seeing a plate that had a boss for an O2 that went between the manifold and riser, but that's about it.

I think all the instructions ive seen for a wide band O2 sensor want it about 18" or so from the cylinder head/header flange.

I have two sets of cmi LS headers for sale dyno time only 248 909 0240 jim

Hi Jim , Thanks for the offer but I have a feeling these may be a little over my budget. I just bought a motor now and kinda going one piece of the puzzle at the time. Let me know how much for fun.

Thanks

Marc

Hey Bor , since you seem to be down with building LS for marine use any advice or component I should be giving extra attention to in order to cover fire / spark issue's ?

I know the big no no for automotive parts in marine application is the starter but on the LS it's not like those old open starters that were found on vehicle in the 1980's...

far as I know we just used the standard coils and put on some decent all rubber ignition wires whit out the metal plugs on the spark plugs .

I used the Pcm z06 closed cooling set up to protect the aluminum engine .
The bravo coupler and bell housing bolts directly on the engine whit out any custom work .

we put in a forged rotation assembly from compstar by callies and bored and torque plate honed the block to the specs of my builder .

also we upgraded the valve train .

But like I said before if you keep whit the stock engine I would not do anything to it beside maybe the closed cooling .

hope this helps

bor