Quote:
Originally Posted by OldJedi
One more question, then I will talk with you more at the fest. You said the LS9 manifold is lower and would fit the wiper tray, can it be installed on an LSA engine without modifications?
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Yes and no, the bolt patter is the same for the tops. The LSA and the LSA have sensors in different positions and the fuel rails are different. For that reason you would need to make some modifications,
The LSA uses 1 square intercooler towards the rear or raised portion of the top. The air from the TVS 1900 goes straight up then makes the turn after passing through the intercooler core. The core sits on a square rubber gasket that is in a recess in the lower manifold.
The LS9 uses 2 intercooler cores that sit to the sdie of the opening of the TVS2300. The air makes the turn before the intercooler core. The LS9 lower has 2 rubber gasket strips that run the length of the manifold.
If you were to use the LS9 top on the LSA lower you would need to make some seals to close the gaps from the different gasket configurations. You could rig something up pretty easily but the efficency would suffer.
Here is the kicker, the LSA intercooler is less restrictive and more efficiant that the LS9. That statment should cause some LS9 huggers a little heartburn.
My thoughts.....of course
Robin