How to identify trick flow heads

[BK_CAULEY]

i recently aquired a new set of trick flow heads and i would like to know what size they are what CC the combustion chambers are and stuff like that. they are new heads and i was just curious and dont feel like waiting till monday to call trickflow.

 

[BK_CAULEY]

should this be in tech?

 

[vikingpower]

Inline valves -> High Port, canted valves -> twisted wedge
if twisted wedge, dual springs are track heats, single springs are regular twisted wedge, copperbronze exhuast seats are R heads

 

[BlownFiveLiter]

It's fine here in talk. I didn't order the Track Heat heads, but still have the dual springs. IIRC, Track Heats don't have the thermactor holes drilled through the heads, whereas the TW's do.

 

[BK_CAULEY]

mine do have dual valve springs. and im not exactly sure what a thermactor hole is. is it on the intake side in between the two intake bolts? i found some numbers on my head but havent found any info online.

 

[BlownFiveLiter]

The thermactor holes are the ones at either end of the cylinder head for the emissions crap to bolt up to. What are the numbers on the heads? I'm sure someone here may be able to find you an answer to which heads they are.

 

[BK_CAULEY]

mine has a big threaded plug in either end of the head if that is what you are talking about? its like it necks it down to a 3/8 bolt from a 1/2" one i can take pictures if need be.
even if it is the lesser head are they good power making heads? what AFR head are they comparable too.

these are the numbers on them.
78641-2
354

 

[Mr. Rustypwnz]

yep you gots the tw's

 

[strtrcr50]

Comparable to afr 185's. :stirpot:

 

[BK_CAULEY]

yep you gots the tw's

Well according to the summit catalog TW's are ALL of the TF heads. TW track heat TW street heat, TW R series the only ones not labled TW are the highports

 

[BK_CAULEY]

how much power are these heads good for? under boost. bottle or whatever.

 

[vikingpower]

how much power are these heads good for? under boost. bottle or whatever.

I'm shooting for 500 N/A with my new bottom end I'm putting together. Its a 4.000 boss block with a 3.00 CHP Dominator kit, 0 balanced with 8cc domed pistons.

On a stock shortblock, its pretty easy get 400 with them.

 

[vikingpower]

Also, TW heads are not dual spring, what looks like a second spring is a damper.

 

[Foxfan88]

the twisted wedge is the smallest head they make for the SBF and its a really good head. the next best up are the CNC ported TWs and then the highports etc etc

 

[Foxfan88]

Also, TW heads are not dual spring, what looks like a second spring is a damper.

my TWs have the upgraded springs and they are dual springs

 

[BK_CAULEY]

so if i put them on my NA 357w will i be able to get 400hp with them?

 

[vikingpower]

my TWs have the upgraded springs and they are dual springs

exactly, you have upgraded springs, not what TFS originally supplied with them

 

[Foxfan88]

exactly, you have upgraded springs, not what TFS originally supplied with them

i see what you mean now i just misunderstood you.

 

[BK_CAULEY]

does anyone know if i can make over 400 NA hp with these heads on my EFI 351

 

[Mr. Rustypwnz]

desktop dyno is your friend!! I made 700n/a ponies from my k20