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Old 07-10-2003, 10:08 AM
  #1
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I am running 468s with good internals..No Intercoolers
4 lbs boost from Blower shop 871s.......
People are telling me i can go 5-5.5 lbs no problem....4 lbs is just overcoming the drag from blowers.
I don't do any of those long WFO runs...just short burst when needed

Whadaya think ?
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Old 07-10-2003, 11:35 AM
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Compression ratio ? Heads ? You need more details in order to make those calls.
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Old 07-10-2003, 12:39 PM
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Birdog,

Cat's right...put those coolers on there big boy!!! I keep mine at 5lbs, your motors could do 5 or 5.5 pretty easy.
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Old 07-10-2003, 01:32 PM
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Not to argue but I've run little 250 b&m blowers for years on 468's and 482's with 6 pounds and no innercooler and 8.75 to 9 to 1 comp. so the 8-71 is even bigger hence much less heat than even a B&M mega blower -420/6-71--. sooo the 6 lbs on bird dog should be fine unless theres something big he's not disclosing
It does take about 2.75 to 3 on the dyno to make up for the 8-71 parasitic loss
Bird dog your wasting money with that blower unless you spin it harder and a innercooler is not needed in your case with the facts I know .
just put in some new plugs make a pass short hard one read plugs and adjust from there and run about 32* total timing syn.oil ,,MSD,, and smile
 
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Old 07-10-2003, 05:15 PM
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I did leave out a very important fact........8:1 Comp........Doh !!
New GM Big Oval port heads.......
I like Bobbys answer the best !!!!!!!!!!!1
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Old 07-10-2003, 05:23 PM
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Dano.......Intercoolers are not in the budget right now........
unless you have a pair ??????? want to help a po boy out ??
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Old 07-10-2003, 06:51 PM
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Intercoolers & 9 lbs of boost
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