Tims 88GT

What is the differance between the track heat heads and the TW heads? they are boath TW heads right? just the track heat have better springs and stuff?

detroit50

Look up the specs on the website

pat

Its the same thing.

50mikey

Well from the charts I looked at on trickflow.com, the only difference bettween the two was the valve seat angle. 1 out of the three numbers is different. Other than that they look the same, the flowbench results are the same also

boss429

maybe its like the intakes (track heat and street heat)

the street heat makes power a little better in the lower RPM range, and the track heat makes better RPM a little higher.

Tims 88GT

i guess im calling them, the only thing i can see is the spring retes.

50mikey

I thought the spring rates were the same. Only difference I saw was the valve seat angle

Tims 88GT

so whats the seat angle have to do with anything? they are both reated .540 max lift on stock bottom end right?

50mikey

I dunno....I just read it...

Tims 88GT

lol i guess im gonna have to call.