40/60 Valve spacing rockers/shaft mts?
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Joined: Mar 2002
Posts: 1,842
From: Bloomfield Hills MI
40/60 Valve spacing rockers/shaft mts?
Im looking for a set of shaft mount rockers for my heads which have a 40/60 valve spacing, any off the shelf sets that anyone knows of. If I can't find a set is there a roller rocker that will clear a 1.55 spring and can hold 600lbs of pressure?
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Joined: Oct 1998
Posts: 297
From: Choctaw, OK 73020
Re: 40/60 Valve spacing rockers/shaft mts?
Originally Posted by Rodrigues
Im looking for a set of shaft mount rockers for my heads which have a 40/60 valve spacing, any off the shelf sets that anyone knows of. If I can't find a set is there a roller rocker that will clear a 1.55 spring and can hold 600lbs of pressure?
What heads are you running with a 60/40 split? AFR 227s? Brodix Track I-Xs?
Dave
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Joined: Mar 2002
Posts: 1,842
From: Bloomfield Hills MI
Re: 40/60 Valve spacing rockers/shaft mts?
Im running a Track1x, where would you draw the line with spring pressures between a shaft mount setup and a roller rocker setup to justify the cost?
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Joined: Apr 2004
Posts: 163
From: IL
Re: 40/60 Valve spacing rockers/shaft mts?
I am using a setup from this company .they build shaft systems for a lot of race teams and some of the major suppliers. 
www.dreracing.com
www.dreracing.com
Registered User
Joined: Oct 1998
Posts: 297
From: Choctaw, OK 73020
Re: 40/60 Valve spacing rockers/shaft mts?
DRE's makes Comps Shaft Rockers from what I understand. I was interested in more information concerning their product, but their website definitely leads much to be desired.....have of it doesn't work....more importantly the SBC applications listing doesn't work.
Dave
Dave
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Joined: Nov 2004
Posts: 55
Re: 40/60 Valve spacing rockers/shaft mts?
What is 40/60 spacing?, ie what is the
spacing betwen valves, also the offset of the intake
valve vs the cyl center line.
Same questions, standard spacing.
Lifter bores, what is the spacing, and
offset, from cyl center line?
spacing betwen valves, also the offset of the intake
valve vs the cyl center line.
Same questions, standard spacing.
Lifter bores, what is the spacing, and
offset, from cyl center line?
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: 40/60 Valve spacing rockers/shaft mts?
Originally Posted by Rodrigues
Im running a Track1x, where would you draw the line with spring pressures between a shaft mount setup and a roller rocker setup to justify the cost?
I am a dealer for DRE and you can buy direct and if need be they can make you most anything you need.
Thread Starter
Registered User
Joined: Mar 2002
Posts: 1,842
From: Bloomfield Hills MI
Re: 40/60 Valve spacing rockers/shaft mts?
I have 600# of prsesure on the nose and will be spinning to 7600 rpm or so, think stud mounts will hold with this sort of pressure?
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
Re: 40/60 Valve spacing rockers/shaft mts?
Originally Posted by Rodrigues
I have 600# of prsesure on the nose and will be spinning to 7600 rpm or so, think stud mounts will hold with this sort of pressure?
Registered User
Joined: Nov 2004
Posts: 55
Re: 40/60 Valve spacing rockers/shaft mts?
Originally Posted by contactpatch
What is 40/60 spacing?, ie what is the
spacing betwen valves, also the offset of the intake
valve vs the cyl center line.
Same questions, standard spacing.
Lifter bores, what is the spacing, and
offset, from cyl center line?
spacing betwen valves, also the offset of the intake
valve vs the cyl center line.
Same questions, standard spacing.
Lifter bores, what is the spacing, and
offset, from cyl center line?
are these numbers correct?
the lifter bore spacings, seem goofed up
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