evilunclegrimace
Does not always play well with others
The only Iron intake that I have seen on a 5.7 TBI engine was in a G 30 van. Every C/K truck with a 4.3 or 5.7 came with a aluminum intake. And it is China rail.
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The 1990 has the 4 barrel one (mark IV). The 92 has the actual TBI intake but it’s still iron.My '88 original 4.3 was aluminum.
The 5.0 I swapped in from an '88 2500 was aluminum.
My '89 1500 original 5.7 intake, under the Whipple, is aluminum.
My '95 5.7 is aluminum.
The lower halves of the 5.7 Vortecs on the 5.7s on my '98 Suburban 2500, and my "00 Yukon are aluminum.
I never seen a smallblock iron TBI intake. Carb intake yes, not EFI.
As for the big block, do you have an actual TBI intake or a 2bbl carb intake with a TBI adaptor?
O.P.: ditch the rubber, use RTV.
@User_name i believe the FSMs or some of them are in a sticky thread somewhere in here.
One tip I have for RTV is follow the manufacturer instructions. Most will call for allowing the rtv to “skin over” before assembly.
Permatex recommends NOT letting the RTV Silicone "skin over".One tip I have for RTV is follow the manufacturer instructions. Most will call for allowing the rtv to “skin over” before assembly.
Here's what we do, run a light ring of "The Right Stuff" around the water ports too, then set the gasket in place. The tabs on the gaskets will go into the end of your china rail line so, you just squeeze a little dab over it to ensure it's sealed when you drop the manifold over it.does the 0.5 inch go under the gasket or over the gasket? and why do you need to do so?
Yeplittle dab over the tab of the gasket?