604 CID Suggestions

Am I missing something here? I was looking at the Trickflow A460 heads and they have an advertised flow that is less then the P51. What am I missing?

A little info:

https://www.429-460.com/proven-builds-f4/cylinder-head-info-gathered-by-djohagin-t122.htm

Hope that helps,

Dave

Stangman98 wrote:Am I missing something here? I was looking at the Trickflow A460 heads and they have an advertised flow that is less then the P51. What am I missing?

Do not get hung up on flow numbers. The cross-section is larger on the A-heads, and the C-heads are even larger. You'll find it is in the preparation of the head, namely who is doing it, that is going to determine how the head performs. A badly prepped A-headed engine can be out-horsepowered by a well designed P51 headed engine for example.

That being said, a well designed C-headed engine will beat a well designed A-headed engine, and a well designed A-headed engine will beat a well-designed P51 engine.

Hope that helps,

Dave

Stangman98 wrote:Am I missing something here? I was looking at the Trickflow A460 heads and they have an advertised flow that is less then the P51. What am I missing?

The TFS A460 with the 2.350" intake valve option are capable of 430 cfm out of the box . 460-490 cfm prepared....depends on the $s spent .

Lem Evans wrote:

Stangman98 wrote:Am I missing something here? I was looking at the Trickflow A460 heads and they have an advertised flow that is less then the P51. What am I missing?

The TFS A460 with the 2.350" intake valve option are capable of 430 cfm out of the box . 460-490 cfm prepared....depends on the $s spent .

Thanks Lem

Who is your engine builder,,,,,that runs a big gray Ford Torino? What cylinder heads does he run?

Charlie Evans

c.evans wrote:Who is your engine builder,,,,,that runs a big gray Ford Torino? What cylinder heads does he run?

Charlie Evans

That's what I am going to ask him. Dave Meister. He runs NMCA Extreme Street

I thought you were probally talking about Dave. He'll give you good advice.

Charlie

c.evans wrote:I thought you were probally talking about Dave. He'll give you good advice.

Charlie

Lives about 10 minutes from me. Been friends for long time

If you were to decide to go with A460 heads, I would put a lot of thought in the valve train area. Especially the cam, valve size, and valve spring package. The TFS A460’s come with springs that have 250lb seat pressure and 800lb open. IMHO on a street engine, the springs wouldn’t last very long. The best bet would be to buy bare heads and start from scratch.

The down side to the bare heads would be that they do not come with a valve job or guides honed ... adding several $s to the bare cost . Maybe selling or swaping the springs would be a better option .

Damon any updates ??

Not at all. Gotta lotta other things that need to get done before I even touch the car. House stuff comes first

I can't wait to see what yer 604 would Dyno at.

Hey, you cant sleep in your house, under a bridge, down by the river.