FS: GMPP WCCH LSX Heads w/Crower Shaft Rockers NIB
07-27-2014, 05:41 PM
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FS: GMPP WCCH LSX Heads w/Crower Shaft Rockers NIB
SOLD 8/5/14
For Sale: All Brand New In Box. Never Installed. Had big plans for my Z then sold it and moved on to C3 LS3 project. So these need to go. May trade for C3 mod/upgrade parts.
GMPP-LSX 6 Bolt GM19201806 WCCH, Crower Shaft Roller Rockers 74107F, Del West Ti intake valves, Ferrea Turbo SS exhaust Valves, Manley Nextek Polished Finish Springs, Ti Retainers, bronze guides, WCCH Valve job/Porting/Machining off Stock Rocker Stands for Crower Shaft Rockers, WCCH assembly.
WCCH info on these heads "Our program for the GM LS7 castings makes the most from GM's hot rod offering. Utilizing low lift flow technology our ports and chamber design maximize flow across the useable lift range. The factory finished combustion chambers are retained keeping compression ratios the same as stock.
Both intake and exhaust ports best the factory port's peak flow while maintaining small runner volumes. The intake ports have 267cc while the exhaust ports hold 99cc. The flow rates achieved below utilize the factory titanium intake valves and after market stainless steel valves"
for flow rate chart on these heads go here:
http://www.proheads.com/WCCH_LS7.html
$4,500 OBO plus shipping plus paypal fees
Located in Central Florida.
For Sale: All Brand New In Box. Never Installed. Had big plans for my Z then sold it and moved on to C3 LS3 project. So these need to go. May trade for C3 mod/upgrade parts.
GMPP-LSX 6 Bolt GM19201806 WCCH, Crower Shaft Roller Rockers 74107F, Del West Ti intake valves, Ferrea Turbo SS exhaust Valves, Manley Nextek Polished Finish Springs, Ti Retainers, bronze guides, WCCH Valve job/Porting/Machining off Stock Rocker Stands for Crower Shaft Rockers, WCCH assembly.
WCCH info on these heads "Our program for the GM LS7 castings makes the most from GM's hot rod offering. Utilizing low lift flow technology our ports and chamber design maximize flow across the useable lift range. The factory finished combustion chambers are retained keeping compression ratios the same as stock.
Both intake and exhaust ports best the factory port's peak flow while maintaining small runner volumes. The intake ports have 267cc while the exhaust ports hold 99cc. The flow rates achieved below utilize the factory titanium intake valves and after market stainless steel valves"
for flow rate chart on these heads go here:
http://www.proheads.com/WCCH_LS7.html
$4,500 OBO plus shipping plus paypal fees
Located in Central Florida.
Last edited by D nice; 08-05-2014 at 07:55 PM. Reason: added more head info and wcch link
07-28-2014, 04:27 PM
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pm's replied to....
Your LS7 deserves these
Original price from wcch was thousands more than what I am asking! These Crowers are very nice pieces.
Your LS7 deserves these
Original price from wcch was thousands more than what I am asking! These Crowers are very nice pieces.
07-28-2014, 09:01 PM
#6
Drifting
What kinda rwhp can these bring? I am looking at heads now for more hp on my 590 rwhp ls7.. I already have lg custom head work (what ever that means)
07-28-2014, 10:26 PM
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Meinersk,
Not exactly sure what hp these will bring...It would depend on what other mods you have. These heads will serve mid to high hp set ups well....and being 6-bolt, they will stay with your future engine swaps and FI.
Someone else may chime in, but I think you would see significant gains (60-80) on a current FI/Cam set up with stock heads. Stock engine will see mild gains (30-50), but will enjoy less friction & noise...and more longevity on top end. Those numbers are only my guess...more educated individuals are welcome to chime in.
Thanks
Dennis
Not exactly sure what hp these will bring...It would depend on what other mods you have. These heads will serve mid to high hp set ups well....and being 6-bolt, they will stay with your future engine swaps and FI.
Someone else may chime in, but I think you would see significant gains (60-80) on a current FI/Cam set up with stock heads. Stock engine will see mild gains (30-50), but will enjoy less friction & noise...and more longevity on top end. Those numbers are only my guess...more educated individuals are welcome to chime in.
Thanks
Dennis
07-29-2014, 09:15 AM
#10
I just bought Manley spring kit for my heads . I would buy them if someone want my stockers . My stock ls7 heads are on the 13 z I bought new . Less than 2000 miles . If anyone wants to buy them with the spring kit which I paid $725 for I would be all over it . I would have the techs in my shop pull them off
