400 Engine Project- Shortblock done
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Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
400 Engine Project- Shortblock done
We currently have the short block done and the piston to block deck is looking great. Hopfully we will be dynoing by early Dec. Thank you to Dan Lee for Loaning an intake so far. We would still like to get another intake to compare with.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
That looks great Tim, those pistons are right on zero deck, and you have enough dish for the Aussie heads.
I hope someone has a spare Edelbrock Performer that they can part with for a while. I would like to see a head to head comparison of a few manifolds.
I hope someone has a spare Edelbrock Performer that they can part with for a while. I would like to see a head to head comparison of a few manifolds.
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Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
We actually cc the block with the pistons to confirm our machining, and what you see is a 32cc dish, including the valve reliefs and area above the ring land around the head of the piston. I forgot to get pictures of this process. Here's the best part, they lost about 65 grams from this, and now they are with in 10 grams of a stock 400 piston. It was very easy to balance.
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Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
According to JE pistons, a round dish is the way to go. They say that the round dish "rolls" the air towards the center and creates a better swirl. Sounds like that's what the X-treme Dirt late models engines use.
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Elder User
Joined: Feb 2003
Posts: 564
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From: Indianapolis IN
I have a SP2P elderbrock that can be borrowed if that will help, it is an old setup but it is just sitting.Sorry the Preformer is in use at this time.
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Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
Wow I havn't seen a sp2p in awhile. Thanks for the offer, but I would like to do this test with intakes that are available. This will hopfully help some people in their intake decisions.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
I think that the only intakes currently in production for the 351M/400 motors are two versions of the Edelbrock Performer and the Weiand 8010. These are all dual plane intakes. The Weiand has the best specs, but intake manifold specs are not very revealing.
I believe Edelbrock is about to produce a new intake to go with their aluminum heads. It will probably be a Performer RPM model, similar to one the produce for the Windsor motors.
I believe Edelbrock is about to produce a new intake to go with their aluminum heads. It will probably be a Performer RPM model, similar to one the produce for the Windsor motors.
Mountain Pass
Joined: Jul 2003
Posts: 127
Likes: 0
From: Ypsilanti, Michigan
I can check the one I have, it's an Edlebrock, can't remember the number right now. If you still need one. There's a 4bbl holley on it too. I have some more engine work to do on the long block, and won't need the intake for a while. PM me if you want.
