Intake fit issues Trick flow 270 to Indy single plane

[TexasRoadRunner68]

Any idea what’s going on here? Stock 400 block with maybe a light pass over the deck when the machine work was done. Brand new trick flow 270s and an Indy 400-2 single plane. The mounting holes look considerably off.

I don’t have the head gaskets or intake gaskets on. It’s just mocked up. What’s going on here?

 

[493 Mike]

Try a different manifold on. That should tell you what the trouble area is.
Mike

 

[pnora]

My bets on the intake. It has been milled. Its just going to get worse. As said try another intake.

 

[TexasRoadRunner68]

My bets on the intake. It has been milled. Its just going to get worse. As said try another intake.

Ugh. I couldn’t find a low deck max wedge intake anywhere…I got this from a Fbbo member.

 

[pnora]

Ugh. I couldn’t find a low deck max wedge intake anywhere…I got this from a Fbbo member.

Just try any low deck intake to see how it fits. Can be iron. That will confirm the fitment.

 

[68 HEMI GTS]

Looks like the intake has been milled

 

[TexasRoadRunner68]

Just try any low deck intake to see how it fits. Can be iron. That will confirm the fitmen

Looks like the intake has been milled

Well, if I have to buy another…should I stay 4150 pattern or go 4500? I have both carbs. It’s a street strip build. Probably mostly street, but it’ll see the track for sure.

 

[Geoff 2]

Yup, that is called poor machining/quality control.

 

[Dan64]

I'm pretty happy with my Indy dual plane ported to match my 270's, i run it with a 1"spacer, no problem with hood clearance. Made 531 hp at the wheels with a 850 d.p. (630 at the crank).

 

[Black_Sheep]

Looks like the intake has been milled

The flanges look really thin compared to photos I found online, like it’s been milled to fit a block that was decked. Did the OP buy it new or used?

 

[pnora]

The flanges look really thin compared to photos I found online, like it’s been milled to fit a block that was decked. Did the OP buy it new or used?

View attachment 1502938

Go back and read what he said.

 

[68 HEMI GTS]

Unmilled flange on an Indy LD, .493

 

[Black_Sheep]

Go back and read what he said.

OP didn’t say whether the intake was new or used…

 

[PRHeads]

Seems like doubling up some intake gaskets would take care of it.

 

[Geoff 2]

I had another look at the pics in post #1. I think the manifold is the correct width & the ports will line up.

What is out of whack are the holes: either in the head or intake. The holes in the intake can be elongated with a file & it will probably fit ok.

 

[pnora]

I had another look at the pics in post #1. I think the manifold is the correct width & the ports will line up.

What is out of whack are the holes: either in the head or intake. The holes in the intake can be elongated with a file & it will probably fit ok.

Not if it has been milled. It will be worse when he puts the head gaskets on. Slotting the holes is a hack fix.

 

[JackpotJim]

Indy had 4500 base, Max Wedge port single plane Low Deck manifolds in stock earlier this summer. Might be worth a call to see if they are still available. I also have a Trick Flow Track Heat 4150 base manifold that the runners have been opened up to fit 270's TF heads for Low Deck motor, I think I also have a Offenhauser 4500 base low deck manifold that the ports were opened up.

 

[dvw]

Post #1. No head gaskets installed. Heads set lower. Intake fits higher. How can fit and quality be condemned if we don't even know what gaskets will be used?
Doug

 

[pnora]

Post #1. No head gaskets installed. Heads set lower. Intake fits higher. How can fit and quality be condemned if we don't even know what gaskets will be used?
Doug

Heads are sitting higher and the intake is setting lower without head gaskets. Installing head gaskets is going to raise the heads further off the deck face and drop the intake down even lower.

 

[RemCharger]

A couple cheap .040 headgaskets and some washers on the 4 corners of the intake to start measuring