Hey, any HR guys spinning well past 7500rpms
01-19-2011, 08:47 PM
#101
What a poor, generalized blanket statement. Clearly you're not familiar with EFI renegade... 9500 rpm and over 800# open on unmodified OEM ford lifters. No they're not bottomed out either... oh and they're going bottom 8s on .550 lift restricted 311 cube motors. Again, unmodified OEM ford lifters.
01-19-2011, 09:00 PM
#102
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Because if you are making BIG power you will make BIGGER Power going SR. I also cannot believe people are concerned with the sr shortcomings and at the same time putting huge cams and hr killing springs in and trying to rev high.
It's like trying to run faster by strapping a heavy backpack on and going to the gym and doing squats for more power.
It's like trying to run faster by strapping a heavy backpack on and going to the gym and doing squats for more power.
01-19-2011, 10:21 PM
#103
I think the point he was trying to make is that if they can get them to survive in 9500 rpm screamers then living in a modest lil 8000 rpm LT1 should not be seen as impossible or not worthwhile.
I think a lot of the contradictions are because of the mindset of how weak HR lifters used to be...the whole "xxx" lbs will crush an HR thing. After having a defective COMP OEM lifter grenade on me with mild little Crane 10308 springs I can see why some would be apprehensive to throw hundreds of pounds at them.
I wouldn't want to torture an HR lifter with high springs pressures in a daily driver, but I wouldn't be surprised if they can take a LOT more abuse then they are given credit for in a track car.
I think a lot of the contradictions are because of the mindset of how weak HR lifters used to be...the whole "xxx" lbs will crush an HR thing. After having a defective COMP OEM lifter grenade on me with mild little Crane 10308 springs I can see why some would be apprehensive to throw hundreds of pounds at them.
I wouldn't want to torture an HR lifter with high springs pressures in a daily driver, but I wouldn't be surprised if they can take a LOT more abuse then they are given credit for in a track car.
01-19-2011, 11:00 PM
#104
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I'm running a decent size HR in my car 249/257 .612 107LSA no big dollar shaft mounts but, the reason I'm running a HR FWIW is because I used to run a big SR in my last motor and a lifter failed after only about 2,000 street miles. I can't say I wasn't warned the builder said sitting idling for extended periods will kill them quickly due to their design and lack of oil at Idle.
01-20-2011, 04:57 AM
#105
I think the point he was trying to make is that if they can get them to survive in 9500 rpm screamers then living in a modest lil 8000 rpm LT1 should not be seen as impossible or not worthwhile.
I think a lot of the contradictions are because of the mindset of how weak HR lifters used to be...the whole "xxx" lbs will crush an HR thing. After having a defective COMP OEM lifter grenade on me with mild little Crane 10308 springs I can see why some would be apprehensive to throw hundreds of pounds at them.
I wouldn't want to torture an HR lifter with high springs pressures in a daily driver, but I wouldn't be surprised if they can take a LOT more abuse then they are given credit for in a track car.
I think a lot of the contradictions are because of the mindset of how weak HR lifters used to be...the whole "xxx" lbs will crush an HR thing. After having a defective COMP OEM lifter grenade on me with mild little Crane 10308 springs I can see why some would be apprehensive to throw hundreds of pounds at them.
I wouldn't want to torture an HR lifter with high springs pressures in a daily driver, but I wouldn't be surprised if they can take a LOT more abuse then they are given credit for in a track car.
