[Timm10221]

How much of a gain would the fast as cast get you over the street heads that come with the trick flow top end kit. I am looking to buy this when i get home.

Trick Flow Specialties TFS-K514-360350B - Trick Flow® 360 HP Twisted Wedge® Top-End Engine Kits for Ford 5.0L – SummitRacing.com

[Iwannagofast]

yeah darrell....break down a comparison for us

[kilby91]

I was reading up on these heads on a different forum, and a very credible source was talking about these heads.. Here is what he wrote:

"There is a 170cc head. This 170cc head can be CNC ported to 185cc or 205cc.

There is a porter's casting that is made exclusively to CNC. They end up at 185cc or 205cc. This makes a lot BETTER piece than if you just CNC'ed the OOTB 170cc head.

Then there is a 190cc Fast As Cast head. This head was designed off of the 185cc CNC head. It is priced for those on a "budget". It is 400.00 - 500.00 CHEAPER than its CNC cousins and in its intended market, there is not another head you can and spend no money on that is going to out run it. This head has a CNC chamber (standard, no extra cost) and a CNC bowl blend (standard, no extra cost) that just knocks the lip off of the seat."

From what i have heard from people that i have talked to, the FAC 190 heads are hard to beat.. But on the other hand the TW 170cc head is a great piece also...

[Lind]

well just comparing numbers right now...
combustion chamber: 64 vs 61
intake runner: 190 vs 170
exhaust runner: 66 vs 61

those look like the only differences that i can see on paper


Trick Flow® Twisted Wedge Fast As Cast Cylinder Heads for Small Block Ford: TFS-51400015 - trickflow.com

Trick Flow Specialties TFS-51400010 - Trick Flow® Twisted Wedge® Street/Strip Cylinder Heads for Small Block Ford – SummitRacing.com

[Timm10221]

Yeah those are the only diffs i see too... I would rather the 61 CC for higher compresion, becuase i am going for a NA setup, with nitrous down the road. But yeah if they are a ton better then i will piece together a top end kit instead of going with the premade one...

[coreyflipp]

[QUOTE=Timm10221;2134324]Yeah those are the only diffs i see too... I would rather the 61 CC for higher compresion, becuase i am going for a NA setup, with nitrous down the road. But yeah if they are a ton better then i will piece together a top end kit instead of going with the premade one...[/QUOTE]

Good idea. Def go with the fast as cast. Why not?

[Timm10221]

Yeah and get a custom grind cam too

[coreyflipp]

Originally Posted by Timm10221 Yeah and get a custom grind cam too

That's the word on the street

[Timm10221]

I am waiting to see what 1slo5.0 sayz about them!! I think i know what he will suggest

[1slo5.0]

Originally Posted by Timm10221 How much of a gain would the fast as cast get you over the street heads that come with the trick flow top end kit. I am looking to buy this when i get home. Trick Flow Specialties TFS-K514-360350B - Trick Flow® 360 HP Twisted Wedge® Top-End Engine Kits for Ford 5.0L – SummitRacing.com

I have not run these heads yet but from what I hear they are a top notch head, like everything else Trick Flow sends out the door. What Kilby91 quoted is right out of Jay Allen's mouth on a few other sites. All factual.

Originally Posted by Timm10221 Yeah those are the only diffs i see too... I would rather the 61 CC for higher compresion, becuase i am going for a NA setup, with nitrous down the road. But yeah if they are a ton better then i will piece together a top end kit instead of going with the premade one...

Have the heads milled to get the chamber back down to 61cc or smaller if you want. That is not a big deal at all.

[1slo5.0]

Originally Posted by Lind well just comparing numbers right now... combustion chamber: 64 vs 61 intake runner: 190 vs 170 exhaust runner: 66 vs 61 those look like the only differences that i can see on paper Trick Flow® Twisted Wedge Fast As Cast Cylinder Heads for Small Block Ford: TFS-51400015 - trickflow.com Trick Flow Specialties TFS-51400010 - Trick Flow® Twisted Wedge® Street/Strip Cylinder Heads for Small Block Ford – SummitRacing.com

Only differences? Its a totally different head. Those differences are not small differences and shouldn't be worded as "the only differences".

[Timm10221]

What would my compression be if i didnt??

[1slo5.0]

Originally Posted by Timm10221 What would my compression be if i didnt??

Roughly 8.7:1 on a stock Mustang engine. Too low. I'd have them milled to 54cc and bring compression up close to 10:1 if it was my engine.

Or you can just buy a Canfield 192cc head that comes in either 54, 58 or 61cc chambers.

[Lind]

Originally Posted by 1slo5.0 Only differences? Its a totally different head. Those differences are not small differences and shouldn't be worded as "the only differences".

you took the time to quote it why didnt you read the whole statement, i said on paper, i know its a completely different head (casting, air flow, application wise)

[Timm10221]

wow that is low... the 61cc will be 9.somthing:1.. so youd go for a 54 cc, this is ok on a stock bottom end?? Do you get more gains with the high compression?

[1slo5.0]

Originally Posted by Lind you took the time to quote it why didnt you read the whole statement, i said on paper, i know its a completely different head (casting, air flow, application wise)

I read the whole statement and replied to the whole statement. "Only differences" is big differences in this case.

[1slo5.0]

Originally Posted by Timm10221 wow that is low... the 61cc will be 9.somthing:1.. so youd go for a 54 cc, this is ok on a stock bottom end?? Do you get more gains with the high compression?

Yes a stock bottom end is ok. Gains won't be huge but the gain will be across the entire rpm range. Higher compression equals greater efficiency which equal more horsepower.