valve piston clearance

[8.8mustang]

before i take a part my motor has n e one put 2.02 1.60 valved heads on a 87-92 5.0 ho motor if so what was the clearance can i still run the ford b cam with this please help my heads are edelbrock rpm's

 

[ttop88]

You will most likely have problams. TFS heads rotated the valves to match the factory notches. All others are inline and will need clearance checked.

 

[Rick 91GT]

You will most likely have problams. TFS heads rotated the valves to match the factory notches. All others are inline and will need clearance checked.

Actually the TFS heads have rotated valves and due to that design they allow the 2.20 intake valve. The factory pistons are made for a inline valve head.

Most 2.02 inline valve heads will fit, however you need a near stock cam duration and cam timing.. They usually hit on the very outside edge of the eyebrow, if you ever float the valves it will hit. You really do not need any more depth you need radial clearance, you can buy the Isky tool and notch the pistons yourself.

EVERY motor is diffferent......

 

[347HO]

There are TFS heads that are "inline". That would be the TFS Twisted Wedge... the heads I believe you are refering to?

 

[PUNISHER RACING]

You can run the B cam with a Twisted Wedge head on a stock bottom end. That is as far as I would push to be safe I try to not go over .500 lift with moderate duration on stock bottom ends and TFS TW's

 

[5spd GT]

There are TFS heads that are "inline". That would be the TFS Twisted Wedge... the heads I believe you are refering to?

Nope, inline heads are where the valves are in the stock location.

AFR, Edelbrock, stock...etc. They are 20*.

 

[ttop88]

Actually the TFS heads have rotated valves and due to that design they allow the 2.20 intake valve. The factory pistons are made for a inline valve head.

Thats what I said.

 

[5spd GT]

Thats what I said.

From my understanding, Rick was stating that the inline heads are meant for the stock inline pistons. Trickflow has rotated valves that do not go "inline" with the pistons.

 

[Rick 91GT]

From my understanding, Rick was stating that the inline heads are meant for the stock inline pistons. Trickflow has rotated valves that do not go "inline" with the pistons.

Correct

The TFS HighPorts are a inline valve head, The TFS R have there own moved and rotated valve pattern.

 

[PJC Racing]

The guy has Edelbrock RPM's.

The only way to be safe is, clay the piston and check the clearance.

 

[PJC Racing]

A TFS TW head is an in-line head.

With no side cant, as long as the stems are together, they are in-line. Just the TFS TW has a rotated chamber.

Quote from Jay Allen (Camshaft Innovations)

All of the heads you guys talked about are inline. The valve stems at each cylinder are inline with one another.
A big block Chevy would have non-inline valves or canted.

 

[5spd GT]

I was referring to valve angle.

 

[8.8mustang]

thank all of you for the help im looking into the isky tool