pushrod length

redsn95vert · 10-27-2005, 10:54 AM

I'm planning on upgrading to a new set of 1.7 rocker arms and figured I might as well replace the stock pushrods. The problem is that I'm running into different size pushrods available for the roller cams. Comp Cams has a set that are 6.250, Ford Racing has a set that are 6.272, and Crane has a set that's 6.258 inches long. I would think that the Ford racing rods would give the stock cam with 1.7 rockers would be a good combo with my Comp Cams valve springs. But I'm worried about too much valve lift, and piston to valve clearence..
If anyone has any input I'd greatly appreciate it....
Thanks

Falcons Talon · 10-28-2005, 08:15 AM

Get an adjustable pushrod length checker.
Color the valve tip with some black magic marker.
install the checker and rocker arm.
manually rotate the engine a few times.
take the rocker off.
check where the marker was rubbed off.
it should be worn off in a stripe sideways across the middle of the valve tip.
measure the length checker.
Presto.

tmoss · 10-29-2005, 09:31 AM

Stud mount or pedistal mount rockers?

redsn95vert · 10-30-2005, 06:21 PM

they have the stock pedistal mount rockers

fiveohpatrol · 10-30-2005, 08:33 PM

Quote:

Originally Posted by Falcons Talon

Get an adjustable pushrod length checker.
Color the valve tip with some black magic marker.
install the checker and rocker arm.
manually rotate the engine a few times.
take the rocker off.
check where the marker was rubbed off.
it should be worn off in a stripe sideways across the middle of the valve tip.
measure the length checker.
Presto.

Thats only accurate if you use a light "checking" spring in place of the valvespring. Otherwise you will bottom out the plunger and the readings will be off. You can also modify a stock lifter to simulate a solid one.

Why are you replacing the pushrods? Is there something wrong with them?

redsn95vert · 10-31-2005, 08:33 PM

Nothing's wrong with them, but I figured since I already had them taken apart, I might as well replace them. They are basically one of the only stock components left in the motor.

10-27-2005, 10:54 AM	#1
redsn95vert Registered Member Join Date: Jul 2000 Location: Rochester Posts: 323	pushrod length I'm planning on upgrading to a new set of 1.7 rocker arms and figured I might as well replace the stock pushrods. The problem is that I'm running into different size pushrods available for the roller cams. Comp Cams has a set that are 6.250, Ford Racing has a set that are 6.272, and Crane has a set that's 6.258 inches long. I would think that the Ford racing rods would give the stock cam with 1.7 rockers would be a good combo with my Comp Cams valve springs. But I'm worried about too much valve lift, and piston to valve clearence.. If anyone has any input I'd greatly appreciate it.... Thanks __________________ 95 GT convertable, ported+polished GT40 heads, port matched upper and lower Cobra intake manifold, Flowthech headers, Catco hi-flow h-pipe with 2 hi-flow cats, Mac true fit catback exhaust, 3.73 gears, underdrive pullies, Edelbrock 70mm throttle body, Mac cold air intake, FMS 24lb injectors, Granatelli 75mm mass air

10-28-2005, 08:15 AM	#2
Falcons Talon T.P.M. President Join Date: May 2002 Location: Brownsville Posts: 265	Re: pushrod length Get an adjustable pushrod length checker. Color the valve tip with some black magic marker. install the checker and rocker arm. manually rotate the engine a few times. take the rocker off. check where the marker was rubbed off. it should be worn off in a stripe sideways across the middle of the valve tip. measure the length checker. Presto. __________________

10-29-2005, 09:31 AM	#3
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Re: pushrod length Stud mount or pedistal mount rockers? __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

10-30-2005, 06:21 PM	#4
redsn95vert Registered Member Join Date: Jul 2000 Location: Rochester Posts: 323	Re: pushrod length they have the stock pedistal mount rockers __________________ 95 GT convertable, ported+polished GT40 heads, port matched upper and lower Cobra intake manifold, Flowthech headers, Catco hi-flow h-pipe with 2 hi-flow cats, Mac true fit catback exhaust, 3.73 gears, underdrive pullies, Edelbrock 70mm throttle body, Mac cold air intake, FMS 24lb injectors, Granatelli 75mm mass air

10-31-2005, 08:33 PM	#6
redsn95vert Registered Member Join Date: Jul 2000 Location: Rochester Posts: 323	Re: pushrod length Nothing's wrong with them, but I figured since I already had them taken apart, I might as well replace them. They are basically one of the only stock components left in the motor. __________________ 95 GT convertable, ported+polished GT40 heads, port matched upper and lower Cobra intake manifold, Flowthech headers, Catco hi-flow h-pipe with 2 hi-flow cats, Mac true fit catback exhaust, 3.73 gears, underdrive pullies, Edelbrock 70mm throttle body, Mac cold air intake, FMS 24lb injectors, Granatelli 75mm mass air

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