Pacsetter Longtubes "Race" Version... Do I need a tune?
I saved my LT1 KM for later date when it might come in handy.
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There's lot of things needs to be taken off to get it done. Remove starter, oil dipstick tube, steering linkage, unbolt motor mount, remove exhaust manifolds, spark plug, wires, and coolant temp gauge sensor on the side of the head. Raise the engine up just enough to clear the long tubes, i installed both from under.
Be sure to order all the stuff before starting this job makes the job go quicker instead of running back and forth ordering parts such as O2 extensions, camps, header bolts, new gaskets ect...
Last edited by LT1; Nov 2, 2010 at 01:45 AM.
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There's lot of things needs to be taken off to get it done. Remove starter, oil dipstick tube, steering linkage, unbolt motor mount, remove exhaust manifolds, spark plug, wires, and coolant temp gauge sensor on the side of the head. Raise the engine up just enough to clear the long tubes, i installed both from under.
Be sure to order all the stuff before starting this job makes the job go quicker instead of running back and forth ordering parts such as O2 extensions, camps, header bolts, new gaskets ect...
Its good time to replace engine mounts while your under there.
I wouldn't know because i do all the work myself. If you want to know my opinion i say do it yourself, i wouldn't ever recommend someone to pay money to have it installed. Maybe get couple friends and do it over the weekend and by them some beer.
I wouldn't know because i do all the work myself. If you want to know my opinion i say do it yourself, i wouldn't ever recommend someone to pay money to have it installed. Maybe get couple friends and do it over the weekend and by them some beer.

Question: on a stock motor, prob gonna be a bolt on car with a small tune... will Lt's make that big of a difference than Shorties??? On a Built motor of course, but what bout stock?
And definitely go with a set of longtubes! For the amount of work involved in doing any header swap you will regret it if you went with the shorties. Also the long tubes will give you a better platform to grow on with future mods.
I would plan the whole weekend if I were you. A key point is to get the front end lifted REALLY high to get those headers in from below since you need to angle them up so far. Make sure to check your header bolt torque frequently for the first ~two weeks after the install.
No need for a tune although it will get you a little more power. And yes, LTs are totally worth it! They make a very noticeable difference.
If you decide to pay to have it done, $480 sounds about right. I would do it yourself though. Car projects can get frustrating, but there is nothing better than knowing your car inside and out, and knowing that a job was done right. Both of these only come from you being the one turning the wrenches.



