wyrmrider
Well-Known Member
good comments as usual rumble
Back to springs
Howard has a cam on each side of the durations and lifts of the Hughes - let's call it the straw man cam cuz I'm not sure it's the right onesxt5t xs
273/277 226/230 525/531
???????? 228/232 530/536
277/283 230/236 531/547
Howard recommends their 78438 spring (you could also check PAC and PRI and Lunati has good prices on springs as does Erson and Chet Herbert (report
1.465 od dual
122 @1.650
353 @1.100
a bunch of difference
so you must
measure your installed height (and are your heads preped for dual springs and cut for viton seals(
figure the spring rate of both springs in lbs per inch
figure your closed and open pressures
If the howard does not need 155 lbs neither does the Hughes
Ill bet you could go to the Howard lobe master list and find the hughes lobes right in the middle of the Howards
you might want to get your cam and springs from howard and eliminate the middleman unless they are providing special services
(Just the opposite of buying heads direct from Indy)
you might check out beehive springs and retainers and if you are getting new valves go 11/32 weight on the valve side makes a big difference
get the tool to instll the inners in the car after you break in the cam
Don;t get spoiled, Corona bought you the time to look it up- next time you do it and you could chech Howards lobe catalog
Back to springs
Howard has a cam on each side of the durations and lifts of the Hughes - let's call it the straw man cam cuz I'm not sure it's the right onesxt5t xs
273/277 226/230 525/531
???????? 228/232 530/536
277/283 230/236 531/547
Howard recommends their 78438 spring (you could also check PAC and PRI and Lunati has good prices on springs as does Erson and Chet Herbert (report
1.465 od dual
122 @1.650
353 @1.100
a bunch of difference
so you must
measure your installed height (and are your heads preped for dual springs and cut for viton seals(
figure the spring rate of both springs in lbs per inch
figure your closed and open pressures
If the howard does not need 155 lbs neither does the Hughes
Ill bet you could go to the Howard lobe master list and find the hughes lobes right in the middle of the Howards
you might want to get your cam and springs from howard and eliminate the middleman unless they are providing special services
(Just the opposite of buying heads direct from Indy)
you might check out beehive springs and retainers and if you are getting new valves go 11/32 weight on the valve side makes a big difference
get the tool to instll the inners in the car after you break in the cam
Don;t get spoiled, Corona bought you the time to look it up- next time you do it and you could chech Howards lobe catalog