[BlownZJ]

i see that hughes sells someone elses rocker stud girdle for $80 more than you can get it from jegs (assuming i found the right P/N)

anybody running one? i plan on spinning my motor up to 7000rpm, so it could only help i assume?


im also assuming that the jomar #1104 is the girdle that fits us? (SBC spring loaded heads w/ stock location, 3/8 stud)

hughes link - http://www.hughesengines.com/Index/...VtICgzLjkvNS4yLzUuOSk=&level1=Um9ja2VyIEFybXMgJiBBY2Nlc3Nvcmllcw==&partid=22718

jomar link - http://jomarperformance.com/catalog/product_info.php?cPath=21_22_25&products_id=3

 

[wyrmrider]

Why do you need a girdle at 7000?
running a big roller cam with lots of spring or something
do you have light valves and retainers already?
what cam and springs?
what rockers?
Anybody have experience on a magnum at this rpm range?
Mine's all shaft -on Dodge but no problems on Drag Chevy at that rpm without girdle
What about shaft rockers?
Make sure your geometry is dead nuts on first and that your studs are long enough
Are you thinking of 716 studs?

 

[BlownZJ]

3/8 studs

cam i dont have yet, its going to be a custom grind after the motor is together.

springs and valves will be the ones that come on edelbrock heads most likely.

 

[wyrmrider]

hyd rollers?
do you know what your heads are going to flow yet?
most likely you will not benefit from a stud girdle unless you are circle track or road racing or a boat
Is this a street deal?
low gears?
what am I missing here?

 

[slammedR/T]

Call jomar direct and don't pey hughes mark up price. I have the jomar girdle on my motor and you will need tall valve covers like aluminum fabricated ones.
Eddy heads use 7/16" studs on bottom and in your case 3/8" stud portion on top. As stated by wyrmrider if your heads don't flow the cfm or the cam won't make power above 7K really no need to turn that high. I spin mine to 7200 as that has shown to be the nest ET's on motor now with spry that is a different story.


DEPUTY

 

[slammedR/T]

hyd rollers?
do you know what your heads are going to flow yet?
most likely you will not benefit from a stud girdle unless you are circle track or road racing or a boat
Is this a street deal?
low gears?
what am I missing here?

You are incorrect in street motors not benefiting from a rocker stud girdle, my street motor has double springs with .630" lift cam and spins 7200-7500 rpm. A rocker stud girdle is a must at those rpms and spring pressures as I'm running a solid roller cam and lifters.


DEPUTY

 

[BlownZJ]

im not going to spin ABOVE 7k, 7k is my max - keep in mind this is a centri blown motor also

 

[2k1AmberR/T]

Good luck with the springs that come on edelbrock heads.

 

[wyrmrider]

as I said big solid roller yes
high rpm long duration like circle track or boat @ flat tapet yes
for OP think about 7/16 studs if yo do not have 7/16 roller rockers
street with hyd roller And single or light dual springs-Why?
blower makes no diference
With edelbrock
at least take them apart and check the valve fit
too sloppy or too tight get them fixed
I usally knurl the guides ( not all the way to the bottom) for oiling and ream and id hone to spec
and od hone the valves to put an oil retention finish on them and check for straight and round at the same time
with 630 lift cam obviously guides were cut

find out if your cam is using a stock base circle
many unscruplous grinders use Chevy base circles for all production cams
Buick is even smaller
you can get a better lobe from a master designed for the base circle used - bigger or smaller
one size fits all dosen't

 

[BlownZJ]

Good luck with the springs that come on edelbrock heads.

care to explain?

i would prefer to swap them over to beehives if i have the cash. but im not sure which would fit w/o machining, if any.

 

[wyrmrider]

Be-hives work excellent ask comp cams or someone else who sell beehives or check the specs for bottom diameter and installed height/ closed pressure
The edelbrock spring will work with the Edelbrock cams, which are lazy, slow, idiot proof kind of grinds- almost certainly universal chevy patterns ground by one of the "Big three Detroit Grinders" recall that Crane bought one of these several years ago- do not know if they still own them.

Same cams are available from almost all sources- just check the specs.

 

[BlownZJ]

im notgoing to bother with an OTS cam, unless by some miracle they make one that works for me. otherwise it will be custom ground.

i woudl like beehives on eddy heads, but i havent foudn much info (aka no info) on putting beehives on them.

 

[1evilrt]

There are a few options for beehives on the edelbrock heads, get with Richard at hi Po tek he'll be able to get you on the right track for the beehive set up.

 

[wyrmrider]

My last comment was on the suitability of the Edelbrock springs
Nothing wrong with them on the cams they are specked for-
obviously once you pick your cam you can see if the springs are a fit or not
to pick the cam it's best to have your head flow, compression, gear, rod length and stroke, etc all laid out beforehand
Those running stock heads do not need more than 500 lift as there is little flow benefit above that (maybe .550 on magnums) so choosing a cam that rolls over the nose at 500 really simplifies the valve height and spring requirements no mater what the duration-
now a max acceleration grind even with a rolled over nose is going to take custom springs to match
and with a max acceleration grind you want an inverse radius opening (or both) on the largest base circle that will fit into the cam bearings
Hence custom grind