Push rod length - 460 Ford Forum
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post #1 of 18 (permalink) Old 03-19-2011, 05:33 PM Thread Starter
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Push rod length

Just set my new Super Cobra Jet A heads on the block to check things out. My push rods are too short (8.780 for my DOVE heads). I'm using Comp Cams aluminum roller rockers 1.73 ratio. Any help would be GREATLY appreciated.
Thanks,
Paul
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post #2 of 18 (permalink) Old 03-19-2011, 06:16 PM
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Uh, longer push rods?

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post #3 of 18 (permalink) Old 03-19-2011, 06:33 PM
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What cam have you got?
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post #4 of 18 (permalink) Old 03-19-2011, 07:51 PM Thread Starter
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Its Comp Cams 34-653-5 solid mechanical. Duration 270 I, 276 E @.050. Lift .649 I, .642 E. Ground on a 108 centerline.
THX
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post #5 of 18 (permalink) Old 03-19-2011, 07:53 PM
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Quote:
Originally Posted by Big Block Capri View Post
Just set my new Super Cobra Jet A heads on the block to check things out. My push rods are too short (8.780 for my DOVE heads). I'm using Comp Cams aluminum roller rockers 1.73 ratio. Any help would be GREATLY appreciated.
Thanks,
Paul
gotta figure out my pushrod length!

True Valve Train Geometry

There's some help.

Dave
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post #6 of 18 (permalink) Old 03-19-2011, 09:24 PM
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LOL, That ought to keep him busy for a few minutes! lol HAD to include the first one didn't ya Dave.....
Rob

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post #7 of 18 (permalink) Old 03-19-2011, 09:30 PM
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Well what do you know? Dave is a comedian too!

If you're not living on the edge you're taking up too much space!
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post #8 of 18 (permalink) Old 03-19-2011, 09:50 PM
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Lololol

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post #9 of 18 (permalink) Old 03-19-2011, 09:56 PM Thread Starter
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Not so quick boys...I'd already read the first one. Old and Canadian don't necessarily mean stupid! I was looking for a definitive answer and may have found one. Would 9.150 intake and 8.950 exhaust make reasonable sense?
Paul
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post #10 of 18 (permalink) Old 03-19-2011, 10:05 PM
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Each combination is going to be a little different. What would make sense would be to buy a push rod length checker and determine EXACTLY what length push rod your particular combo needs.
Rob

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post #11 of 18 (permalink) Old 03-19-2011, 10:11 PM
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Measure, measure then measure again. Just to be sure!

If you're not living on the edge you're taking up too much space!
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post #12 of 18 (permalink) Old 03-19-2011, 10:12 PM
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Measure, measure then measure again. Just to be sure! Don't guess and don't go by somebody elses combination.

If you're not living on the edge you're taking up too much space!
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post #13 of 18 (permalink) Old 03-19-2011, 10:15 PM
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What would be the correct pushrod checking tool for the scj heads??

T120r
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post #14 of 18 (permalink) Old 03-19-2011, 10:16 PM Thread Starter
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Measure it will be. Thanks guys. I will probably make my own and it will go from 8.750 to 9.250
Paul

Last edited by Big Block Capri; 03-19-2011 at 10:19 PM.
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post #15 of 18 (permalink) Old 03-19-2011, 10:37 PM
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i used a JEGS aluminum 3/8" DIA pushrod with 5/16" ends. It was adjustable from 8-9.170" i believe. You only need one and it was cheap. however you will need a 12" caliper to measure the length. I believe the comp cams and trickflow ones have measurements on the actually adjustable pushrod. that way you dont need the 12" caliper for the end measurement.
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