How are they not pushing water??
03-30-2012, 12:38 AM
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How are they not pushing water?? I see alot of people starting to up the amount of boost. Especially since hot rod built the 4.8. Guys are talking about running 18-21 lbs of boost on stock long blocks. I have always thought 14-16 lbs was were they started pushing water. What is everyone else seeing?
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03-30-2012, 08:51 AM
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13-15 on most 76mm kits with stock bolts/gaskets seems to be the normal pushing limit with E85. Haven't seen a stock bottom end push on LS9s/ARP studs yet unless the head was warped badly.
A local car has started to push water on ARP studs tq'd to 90ftlbs, LS9s, iron 408/Trickflow heads, c16. He was also running twin billet 67/66s precisions going 140+ at 3200lbs in the 1/8th, so making a little power.
A local car has started to push water on ARP studs tq'd to 90ftlbs, LS9s, iron 408/Trickflow heads, c16. He was also running twin billet 67/66s precisions going 140+ at 3200lbs in the 1/8th, so making a little power.
03-30-2012, 10:27 AM
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13-15 on most 76mm kits with stock bolts/gaskets seems to be the normal pushing limit with E85. Haven't seen a stock bottom end push on LS9s/ARP studs yet unless the head was warped badly.
A local car has started to push water on ARP studs tq'd to 90ftlbs, LS9s, iron 408/Trickflow heads, c16. He was also running twin billet 67/66s precisions going 140+ at 3200lbs in the 1/8th, so making a little power.
A local car has started to push water on ARP studs tq'd to 90ftlbs, LS9s, iron 408/Trickflow heads, c16. He was also running twin billet 67/66s precisions going 140+ at 3200lbs in the 1/8th, so making a little power.
03-30-2012, 11:34 AM
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this is alot of good info. this is my first FI motor so I'm a noob too. lol How long have yu ran yours at 18 psi, maxx? So anyone talking about running over 15si on a stock longblock are basically quaranteed to push water the way it sounds. I dont see many people running more than 14 psi or so. Is there a reason most aren't running more? Are you guys running stock heads or are most running aftermarket for the higher boost numbers?
03-30-2012, 12:04 PM
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I turned mine up more, was running 20-26lbs for another 800 miles, sold the long block to a friend that is now using a TC78 running 22lbs (made 720rwhp) in a '70 C10. He has gone a couple thousand more, but sadly I think the bottom is dieing as silver material is starting to show in the filter with a slight knock at cruising RPMs for the last couple hundred miles with no loss of performance or oil pressure. They changed heads/lifters/rockers/springs hoping it was in the top end, atleast everything can go on the next JY victim.
Several other stock headed/stock short blocks around here running similar boost numbers, HP in the 7-800rwhp range on E85 with out pushing.
Several other stock headed/stock short blocks around here running similar boost numbers, HP in the 7-800rwhp range on E85 with out pushing.
03-30-2012, 12:40 PM
#19
I turned mine up more, was running 20-26lbs for another 800 miles, sold the long block to a friend that is now using a TC78 running 22lbs (made 720rwhp) in a '70 C10. He has gone a couple thousand more, but sadly I think the bottom is dieing as silver material is starting to show in the filter with a slight knock at cruising RPMs for the last couple hundred miles with no loss of performance or oil pressure. They changed heads/lifters/rockers/springs hoping it was in the top end, atleast everything can go on the next JY victim.
Several other stock headed/stock short blocks around here running similar boost numbers, HP in the 7-800rwhp range on E85 with out pushing.
Several other stock headed/stock short blocks around here running similar boost numbers, HP in the 7-800rwhp range on E85 with out pushing.
seen it a few times