Realfast86

Any update on the release date for the TFS heads?

TRSCobra

Now they're saying another month and a half, so either certain phone reps are more informed than others, or they are having issues with their valve supplier.

Looks like I'll likely be going another route unless someone else can find out a true release date soon.

Realfast86

That sucks atleast sell them bare if valves are a issues everyone will want to change the heavy SS valves anyways!

BOTTLE FEDvette

to the top...anyone have any new info?

WhiteDiamond

I think this is bad information. The center bore to valve seat could be fixed, but in some cases, with some of the wear data we have seen, I believe the machining would be very expensive.

Contacted and the heads are still out months.

Realfast86

I got tired of waiting and bought some 305 Masts!

Mark2009

I can't see what would be very expensive about:

1) touching up the valve seats to correct the misalignment using the existing valve guide bores as a guide as long as they are in good or new condition, or

2) simply replacing the valve guides and using the existing seats at a centerline for reaming them without any misalignment.

When the amount of machining error (valve guide - valve seat misalignment) that has been mentioned during informal internet discussions, it is usually estimated in the area of .004 - .005 which is not, AFAIK, a huge amount to correct for. Or even double that, for that matter.

Or did you have something else in mind?
.

jwebsta32

any updates on these?

TRSCobra

I gave up. Just had my OEM heads redone by American Heritage and moved on to breaking other parts of the car.

I check Trickflow's website every few months, but AFAIK, they're still not available yet.

FN FAST

My castings are in, just waiting on the intake valves

FN FAST

also, summit is shipping complete heads now

http://www.summitracing.com/parts/tfs-3271t002-c01

TRSCobra

That makes it nearly 8 months waiting on valves. Is there one guy making them by hand, using 18th century tools or something?

BOTTLE FEDvette

OMFG! They are out. YESSSS

POST PICS PLEASE!

Flow numbers

http://static.trickflow.com/global/i...710001-c01.pdf

Mark2009

The description only says "stainless steel valves". If they are solid, that intake is going to be a porker.

BOTTLE FEDvette

I'm sure they are...but a good thing you can buy them bare and install the stock ti and any exhaust valve that you want. I'm glad I wanted because I was about to pull the trigger on a AI port work.

American Heritage

I haven't looked up the pricing on these trickflow heads but i did look at the flow sheet that was posted on these heads and i must say:
they dont flow any better than our American Heritage Ported Package 4 heads. Flow numbers between ours and the trickflow heads are pretty damn close.



A set of our package 4 heads with added porting and polishing is only $1,858 (reworking your cores) or $2,958 if you want to purchase a set outright.
Just something to think about.
http://www.americanheritageperformance.com/Contact.html

American Heritage

Here are some pics of our Heads (port work):

FN FAST

No, I didn't want their ****** stainless intake valves. I ordered coated titanium intakes with hardened tips and inconel exhaust valves

BOTTLE FEDvette

Right around 2,600. How big are your intake cambers once you port 'em?

WhiteDiamond

I believe the "as cast" LS7 head is around 270cc's on the intakes……..
The Trick Flows are making very good numbers with extremely high velocity. Numbers are never the whole story.

I would guess a ported LS7 head is going to be around 280cc's.