I have a set of Crane Cams Hyd Retro fit roller lifters(part#11532-16) and was told that they require the 7.046" pushrods and I have a set of Comp Cams Retro fit roller cam pushrods(part#7609-16) that are 7.300" long will the Comp Cams 7.300" long pushrods work with these Crane Cams roller lifters if not what about some pushrods that are 7.050" long?THANKS
Pushrod ????'s
- Thread starter dickeymoore
- Start date
NOTE: Requires special length pushrods. Which are 7.046"
http://www.cranecams.com/product/cart.php?m=product_detail&p=25726
The 7.050" length will probably work fine.
It's best to measure to insure proper valvetrain geometry tho'.
If the Block/Heads have been milled, Valves seats lower, Shorter/Longer valves, Rocker studs changed etc.. can cause Pushrod length to differ from what's suggested.
Stock SBC :
Flat Tappet = 7.794" ---- Comp rounds off to 7.800"
Retro Roller = 7.290" ---- ''''''''''' ''''''''''''''' ''''' '' 7.300"
OEM Roller = 7.195" ---- """"""" """"""""" """ " 7.200"
http://www.cranecams.com/product/cart.php?m=product_detail&p=25726
The 7.050" length will probably work fine.
It's best to measure to insure proper valvetrain geometry tho'.
If the Block/Heads have been milled, Valves seats lower, Shorter/Longer valves, Rocker studs changed etc.. can cause Pushrod length to differ from what's suggested.
Stock SBC :
Flat Tappet = 7.794" ---- Comp rounds off to 7.800"
Retro Roller = 7.290" ---- ''''''''''' ''''''''''''''' ''''' '' 7.300"
OEM Roller = 7.195" ---- """"""" """"""""" """ " 7.200"
I don't know how Crane can specify such a particular length. They can't possibly know what kind of geometry any given non-stock combo will have. I can see saying something like "requires longer push rods", but I can't see how they figure on that exact length. Every performance engine has somewhat different geometry.
Tommy
Tommy
That is an odd size but, apparently it's what Crane uses, Like Comp using 7.300"
If you want to be sure of correct length & proper geometry, get one of your old Pushrods and make your own Length checking tool.
Info here >> http://www.crankshaftcoalition.com/wiki/Valve_train_geometry
If you want to be sure of correct length & proper geometry, get one of your old Pushrods and make your own Length checking tool.
Info here >> http://www.crankshaftcoalition.com/wiki/Valve_train_geometry
Yeah Comp Cams retro fit pushrods are 7.300",I guess Crane Cams lifters are taller than the Comp Cams lifters.THANKS
