How big can you go?

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How big can you go?

Post  papamoe on March 2nd 2012, 7:31 pm

How radical can you get with the cam profile on a tfs A460 headed engine? Where do the problems start?

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Re: How big can you go?

Post  rmcomprandy on March 2nd 2012, 7:49 pm

papamoe wrote: How radical can you get with the cam profile on a tfs A460 headed engine? Where do the problems start?

Somewhere just under .860" valve lift unless you use different valve springs.

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Re: How big can you go?

Post  papamoe on March 2nd 2012, 8:08 pm

I rfigured on the springs. I currently run just over .800 and was looking to make a change maybe make more hp up high.Just dont know the right combo.

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Re: How big can you go?

Post  cool40 on March 2nd 2012, 8:24 pm

whats the cam now?
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Re: How big can you go?

Post  papamoe on March 3rd 2012, 7:24 pm

The cam is 277I 298E @ 50,814I /780E lift,set at 112 deg with 112 lobe sep.

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Re: How big can you go?

Post  Barney on March 3rd 2012, 7:53 pm

What do the heads flow, and where? Think big.
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Re: How big can you go?

Post  cool40 on March 3rd 2012, 10:38 pm

papamoe wrote:The cam is 277I 298E @ 50,814I /780E lift,set at 112 deg with 112 lobe sep.
more @.050 on the intake to start. Suspect
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Re: How big can you go?

Post  papamoe on March 4th 2012, 12:01 am

The heads flowed 408 @ .8,419 @ .850. I have the heads off now and am hoping to improve them.My man has sf600 bench and know how but is not familar with the head.

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Re: How big can you go?

Post  Barney on March 4th 2012, 12:15 am

I would have lift in excess of .850 then for sure.
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Re: How big can you go?

Post  dfree383 on March 4th 2012, 12:18 am

I'd get the heads ported by someone who knows A460 heads, the newer TFS stuff will approach or exceed the 500 mark in the right hands. Thats alot more power than just giving it some more lift.
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Re: How big can you go?

Post  cool40 on March 4th 2012, 12:20 am

Barney wrote:I would have lift in excess of .850 then for sure.
with a 800 shot or without? confused
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Re: How big can you go?

Post  Barney on March 4th 2012, 12:22 am

cool40 wrote:
Barney wrote:I would have lift in excess of .850 then for sure.
with a 800 shot or without? confused
Preferrably with.
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Re: How big can you go?

Post  papamoe on March 4th 2012, 8:55 pm

Is anyone able to tell me where to look for gains on the tfs a460 or is that sacred got to kill you if i tell you info? They are 340cc castings.

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Re: How big can you go?

Post  derek528 on March 4th 2012, 9:29 pm

papamoe wrote:Is anyone able to tell me where to look for gains on the tfs a460 or is that sacred got to kill you if i tell you info? They are 340cc castings.

Would you be interested in a good CNC job?

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Re: How big can you go?

Post  papamoe on March 4th 2012, 9:47 pm

I might later but I would like to make gains here at home and kinda learn a little doing so.When I fork the dough out for some cnc ones Im just going to get a new set. Probably sounds a little silly because I know the quickest easiest way to go would be to sent them out for cnc.

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Re: How big can you go?

Post  derek528 on March 4th 2012, 9:56 pm

papamoe wrote: I might later but I would like to make gains here at home and kinda learn a little doing so.When I fork the dough out for some cnc ones Im just going to get a new set. Probably sounds a little silly because I know the quickest easiest way to go would be to sent them out for cnc.

Nothin wrong with that.

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