[DeTomaso] Rocker Arms
Brian Dudley
bd8134 at gmail.com
Mon Mar 9 16:28:03 EDT 2015
As per George Pence's sticky..
"If your motor’s cylinder heads are milled and tapped for 7/16” stud &
guide plate type rocker arms the Yella Terra YT-6321 rocker arm is the hot
tip. This very rugged rocker arm also performs like a shaft mounted rocker
arm therefore it requires no studs, guide plates or hardened push rods.
Internet pricing for the Yella Terra YT-6321 rocker arm is in the range of
$650 US dollars for a set of 16, sometimes even lower. That may look
"pricey" up front when compared to the standard push-rod guided arm, but
they don't require studs, guide plates, poly-locks or heat treated
push-rods. Once you add up the price for a set of conventional roller
rocker arms plus all the additional stuff you need the price difference is
not that bad ... some guys feel it is break-even."
I am using these with a solid cam with the same lift.
Stock valve cover fits.
Using a rocker that you have to modify sounds like it is designed for a
lower lift.
On Sun, Mar 8, 2015 at 10:49 PM, doug351c <doug351c at gmail.com> wrote:
> i>>?
>
> Yep Mark - that can't be empahsized too much. That's why I said the
> backside may need to be clearanced. (it bit me too !!!)
>
>
>
> Doug
>
> -----Original Message-----
> From: mark skwarek [mailto:ehpantera at yahoo.com]
> Sent: Sunday, March 08, 2015 6:34 PM
> To: doug351c at gmail.com; Tony DiGiovanna; detomaso at poca.com
> Subject: Re: [DeTomaso] Rocker Arms
>
> Just make sure that you have clearance between the pushrod and the
> rocker base at full lift. Under high lift the pushrod can make contact
> with the base of the rocker arm. Them the end of the rocker arm end
> will break off. Been there, done that.
> Mark
> On Sunday, March 8, 2015 9:48 PM, doug351c <doug351c at gmail.com> wrote:
> I like the Scorpion Endurance SCP3023 1.73:1 forged aluminum roller
> rockers.
> They have a hardened insert seat, the shaft is centerless ground, a
> 7/16"
> poloc nut is included and they have a great lifetime warranty. $326 a
> set
> at Summit Racing.
> Max spring dia = 1.625"
> [1]http://www.summitracing.com/parts/scc-scp3023bl
> I'm running these on my 70 Cleveland Mach1 engine. Please note though
> that
> if you intend to run 7/16" dia pushrods, their backsides need to be
> clearance for them. Scorpion's Endurance series cost more than the
> Race
> series but they have a narrower body and shorter polylocks so they fit
> better under stock rocker covers.
> Doug Braun
> blue 73L #550
> -----Original Message-----
> From: DeTomaso [mailto:[2]detomaso-bounces at poca.com]On Behalf Of Tony
> DiGiovanna
> Sent: Sunday, March 08, 2015 4:00 PM
> To: [3]detomaso at poca.com
> Subject: [DeTomaso] Rocker Arms
> 351C, solid flat tappet cam with lift of 0.640. 7/16 screwed-in
> studs. Any
> opinions on Rock Arms? PRW vs. Harland Sharp vs. other?
> _______________________________________________
> Detomaso Forum Managed by POCA
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> use the links above.
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> References
>
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> 2. file://localhost/tmp/tmpfWSGk7.html
> 3. file://localhost/tmp/tmpfWSGk7.html
> 4. file://localhost/tmp/tmpfWSGk7.html
> 5. file://localhost/tmp/tmpfWSGk7.html
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
> Posted emails must not exceed 1.5 Megabytes
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>
-------------- next part --------------
As per George Pence's sticky..
"If your motoras cylinder heads are milled and tapped for 7/16a stud &
guide plate type rocker arms the Yella Terra YT-6321 rocker arm is the
hot tip. This very rugged rocker arm also performs like a shaft mounted
rocker arm therefore it requires no studs, guide plates or hardened
push rods. Internet pricing for the Yella Terra YT-6321 rocker arm is
in the range of $650 US dollars for a set of 16, sometimes even lower.
That may look "pricey" up front when compared to the standard push-rod
guided arm, but they don't require studs, guide plates, poly-locks or
heat treated push-rods. Once you add up the price for a set of
conventional roller rocker arms plus all the additional stuff you need
the price difference is not that bad ... some guys feel it is
break-even."
I am using these with a solid cam with the same lift.
Stock valve cover fits.
Using a rocker that you have to modify sounds like it is designed for a
lower lift.
On Sun, Mar 8, 2015 at 10:49 PM, doug351c <[1]doug351c at gmail.com>
wrote:
A A i>>?
A A Yep Mark - that can't be empahsized too much.A That's why I
said the
A A backside may need to be clearanced. (it bit me too !!!)
A A Doug
A A -----Original Message-----
A A From: mark skwarek [mailto:[2]ehpantera at yahoo.com]
A A Sent: Sunday, March 08, 2015 6:34 PM
A A To: [3]doug351c at gmail.com; Tony DiGiovanna;
[4]detomaso at poca.com
A A Subject: Re: [DeTomaso] Rocker Arms
A A Just make sure that you have clearance between the pushrod and
the
A A rocker base at full lift. Under high lift the pushrod can make
contact
A A with the base of the rocker arm. Them the end of the rocker arm
end
A A will break off. Been there, done that.
A A Mark
A A On Sunday, March 8, 2015 9:48 PM, doug351c
<[5]doug351c at gmail.com> wrote:
A A I like the Scorpion Endurance SCP3023 1.73:1 forged aluminum
roller
A A rockers.
A A They have a hardened insert seat, the shaft is centerless
ground, a
A A 7/16"
A A poloc nut is included and they have a great lifetime
warranty.A $326 a
A A set
A A at Summit Racing.
A A Max spring dia = 1.625"
A A [1][6]http://www.summitracing.com/parts/scc-scp3023bl
A A I'm running these on my 70 Cleveland Mach1 engine.A Please
note though
A A that
A A if you intend to run 7/16" dia pushrods, their backsides need
to be
A A clearance for them.A Scorpion's Endurance series cost more
than the
A A Race
A A series but they have a narrower body and shorter polylocks so
they fit
A A better under stock rocker covers.
A A Doug Braun
A A blue 73L #550
A A -----Original Message-----
A A From: DeTomaso [mailto:[2][7]detomaso-bounces at poca.com]On
Behalf Of Tony
A A DiGiovanna
A A Sent: Sunday, March 08, 2015 4:00 PM
A A To: [3][8]detomaso at poca.com
A A Subject: [DeTomaso] Rocker Arms
A A 351C, solid flat tappet cam with lift of 0.640.A 7/16
screwed-in
A A studs.A Any
A A opinions on Rock Arms? PRW vs. Harland Sharp vs. other?
A A _______________________________________________
A A Detomaso Forum Managed by POCA
A A Posted emails must not exceed 1.5 Megabytes
A A DeTomaso mailing list
A A [4][9]DeTomaso at poca.com
A A [5][10]http://poca.com/mailman/listinfo/detomaso_poca.com
A A To manage your subscription (change email address, unsubscribe,
etc.)
A A use the links above.
References
A A 1. file://localhost/tmp/tmpfWSGk7.html
A A 2. file://localhost/tmp/tmpfWSGk7.html
A A 3. file://localhost/tmp/tmpfWSGk7.html
A A 4. file://localhost/tmp/tmpfWSGk7.html
A A 5. file://localhost/tmp/tmpfWSGk7.html
_______________________________________________
Detomaso Forum Managed by POCA
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DeTomaso mailing list
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To manage your subscription (change email address, unsubscribe,
etc.) use the links above.
References
1. mailto:doug351c at gmail.com
2. mailto:ehpantera at yahoo.com
3. mailto:doug351c at gmail.com
4. mailto:detomaso at poca.com
5. mailto:doug351c at gmail.com
6. http://www.summitracing.com/parts/scc-scp3023bl
7. mailto:detomaso-bounces at poca.com
8. mailto:detomaso at poca.com
9. mailto:DeTomaso at poca.com
10. http://poca.com/mailman/listinfo/detomaso_poca.com
11. mailto:DeTomaso at poca.com
12. http://poca.com/mailman/listinfo/detomaso_poca.com
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