NO. There is no reason to remove the heads are to do any valve spring changing on that size of cam.
You may find it helpful to get a different torque convertor to compliment the new cam. Convertor manufacturers can be very helpful in suggesting the right combination for your application.
They should as they are the same block.
260 is an integer and not a fraction. However, it can be expressed in rational form as 260/1.
The Ford 260 cubic inch is a V8 engine
( Yes ) a 2001 Ford Mustang GT is rated at ( 260 horsepower ) It has the Performance Improved heads The 4.6 liter SOHC , V8 engine is made in Romeo , Michigan , U.S.A. ( the 8th " character " of the VIN is a " W " )
260
it would be a 260 a 350 and 305 are Chevy motors
For the 260 engine it is 6 degrees BTDC
260
200hp and 260 torque
260
2.6 = 2.6*100% = 260%
yes, gt40 heads should work on a 351 windsor. they should work on any small block ford from a 260 to the 351 windsor. Good luck!