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09-06-2007, 07:46 PM #1
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86 Buick Grand National- 02 WS6-M6 407 RWHP
PRC 5.3l Stage 1.5 Heads VS. PRC LS6's
I was wondering what heads would go better with my combo, PRC's 5.3 Stage 1.5 heads or PRC's LS6 heads, they are only fifty dollars in difference. What heads will i see more rwhp along with good power throughout the entire rpm range?
Pacesetter Headers- ORY
Texas Speed 228R Cam/Moly Pushrods/918 Springs
MTI LID
Slp Under Drive Pulley
Texas Speeds Rumbler Catback
SFC's, Lakewood LCA's
Koni SA 4/3, Strano Springs
Dyno Tune
LS7 Clutch, Nitto DR's
407 RWHP 377 Ft./lbs.
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09-07-2007, 08:03 PM #2
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- miami
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pewter- 2000 camaro
Im also wondering the same thing.
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09-10-2007, 08:03 AM #3
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86 Buick Grand National- 02 WS6-M6 407 RWHP
Any Body?
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09-10-2007, 10:05 AM #4
Which ever heads flow the most is what I would look at. Sounds to me like you have enough mods to flow a lot through your heads.
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09-10-2007, 10:47 AM #5
Use the 5.3s if you wanna raise the compression.
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09-10-2007, 04:01 PM #6
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86 Buick Grand National- 02 WS6-M6 407 RWHP
Well can i use the 5.3's considering i can only get 91 octane out here and not 93 like you guys back east since the compression will go up.
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09-10-2007, 05:02 PM #7
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- Jul 2006
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- texas
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grey- 2001 silverado
calling would be fastest/easiest.
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09-10-2007, 07:54 PM #8
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86 Buick Grand National- 02 WS6-M6 407 RWHP
Yeah i sent them an email, i might go with their 5.3L Stage 2.5 actually. They flow 312CFM at 600 on the intake side
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09-10-2007, 10:49 PM #9
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- Jul 2006
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- texas
- Age
- 40
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- 14
grey- 2001 silverado
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09-10-2007, 11:32 PM #10
- Join Date
- Feb 2007
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- Bakersfield, CA
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- 43
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86 Buick Grand National- 02 WS6-M6 407 RWHP
Yeah hopefully i'll see 40 RWHP out of them, my tuner told me he's typically seeing about 40RWHP out of PRC LS6 heads on cars with full bolt ons and they flow about 307CFM at .600 lift. Flow wise they are almost identical.
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