Trick Flow 240 Intake Pushrod Hole Clearance ???

[PROSTOCKTOM]

Can anyone tell me if the intake pushrod holes are drilled or if they are cast in the heads? Edelbrock drills theirs and I wondered how TFS did theirs.

Thanks,
Tom

 

[beanhead]

Not sure if it answers your question exactly, but the holes are oval-shaped. I have plenty of clearance with 3/8" rods.

 

[PROSTOCKTOM]

I am wanting to know because I've welded that area on Edelbrock's in the past. I tried to get Edelbrock to sell me a set of head without those holes drilled, but the new ownership has no interest in helping me and I even have a friend that works there. So I figured rather than welding I would see how Trick Flow did theirs. The idea was if they are drilled maybe TFS would sell me a pair without the holes drilled. That's why I am interested in how they addressed their holes.

Tom

 

[Outsder]

Got a set of 240s on the shelf, checked just for you. Oval milled, with a 1/2" end mill, cut .680" long.

 

[PROSTOCKTOM]

Got a set of 240s on the shelf, checked just for you. Oval milled, with a 1/2" end mill, cut .680" long.

Thank you that's what I needed to know. Now I just need to convince TFS to sell me a set and not drill those holes.

Thanks,
Tom

 

[ChargerST]

Got a set of 240s on the shelf, checked just for you. Oval milled, with a 1/2" end mill, cut .680" long.

Thanks! How much minimum clearance you need for pushrods? If I were to use 7/16 PRs that would mean only 1/32 on each side (1/16 total)..

 

[PROSTOCKTOM]

If you use a Blue Mopar Stage 6 offset rocker you can gain a lot of clearance.

Tom