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RPM intake with Trick flow heads

Ryan Edwards

Ryan Edwards

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Hi all. Just want to get everyone’s input on an issue I came across while building an RB stroker. Finally got my Edlebrock 7193 Performer Intake today. Tried dry fitting to my trick flow heads and the underside of the manifold is hitting my aluminum valley pan. The underside of the manifold hangs down quite a ways where the cross porting passage is to equalize the pressure between heads. The trick flow heads are not ported for this anyways. I am using a flat plate for a valley pan with facing gaskets similar to the 440 souce one rather than an OEM valley pan. Thoughts on milling off this passage on the manifold to clear?
 
Can you return it and just get the correct valley pan?
 
That passage does not equalize pressure between heads. It heats the manifold to aid in cold starting. I have the same manifold and Edelbrock said it is ok to carefully cut that part of manifold off. However, if You are assembling this engine and do not know what that passage is for, I'd recommend having a shop cut that off. And also have them measure the intake to head mating. If the deck was milled and the heads milled, the intake will most likely need to be milled.
 
jamie said:
Can you return it and just get the correct valley pan?
Click to expand...
I custom made it so no. I definitely could get an oem gasket though

03F8556D-57C2-415F-86CF-4B6EEBD8C228.jpeg 10A2AFF2-5A09-4EA6-BCA6-7F9EC4FC10EF.jpeg
 
Pretty fancy for hardly being able to see it! Lol looks like something I would do. Anyways, nice job looks good and yes you can mill that off if you need to.
 
Yeah you can get the 440 source plate that dips down in the centre,, but I'm going with the stock pan on the same build.
 
jamie said:
Pretty fancy for hardly being able to see it! Lol looks like something I would do. Anyways, nice job looks good and yes you can mill that off if you need to.
Click to expand...
RemCharger said:
Yeah you can get the 440 source plate that dips down in the centre,, but I'm going with the stock pan on the same build.
Click to expand...
thanks all. Ya. I had the 440 source pan but didn’t work with the gasket holders (pan too thin). I made this pan and the gasket holders. I think I’ll mill down the intake as suggested. (If anyone wants the Cad drawings LMK)
 
Ryan Edwards said:
Nice! Manifold has been on Back order for months. Just didn’t want to butcher it! Lol
Click to expand...
That was an ultimately unsuccessful attempt to conceal a nitrous system (by someone else). I got it for free. A little welding and grinding on the nozzles, will be good as new.
 
Butcher away! No problem since as you noted, the good performance heads such as Trick Flows don't have the crossover ports anyway.
On a side note--I'm using the TF single plane intake and I'm very happy with Andy's valley tray and bat-wing setup on the TF240s. With 'Superformance' gaskets the port match is on the money, perfect fit and seal..
After you grind off the crossover--you may find the RPM's sealing rails to interfere a little bit, requiring you to grind just a bit along the lower length to get it to clear...maybe, maybe not.
 
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