LS7 Cylinder Heads from West Coast Cylinder Heads
11-29-2009, 07:06 PM
#23
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Results??????????? I just dyno'd my new motor (427 cu in vs teh older 454 cu in) LS7 and I had almost the same rear wheel hp/trq.
Old Motor, WCCH LS7 heads ( PVD coated valves, solid SS exhaust, milled 30 thou) 454 cu in Darton Resleaved Ls7 block, callies magnum crank, Ti rods, Katech pistons, 242/248 .650/.650 cam
New motor Lingenfelter LS7 heads ( Delwest Ti intake/exhaust valves..coated through Richard), GM LS7 block 427 cu in, callies magnum crank, Ti rods, Diamond pistons, LPE GT-19 cam.
My engine builder had the WCCH LS7 heads flowed and said they were not much better than stock. Assuming that Richard has not changed the program, I'd say there are better options out there as I was only down 14 hp/19 trq at the wheels with NO cool down time before pulls and running a FULL POINT rivher on the tune ( 11.9 vs 12.9)
Here is a little comparo I've done for LS7 heads from several vendors ...
Old Motor, WCCH LS7 heads ( PVD coated valves, solid SS exhaust, milled 30 thou) 454 cu in Darton Resleaved Ls7 block, callies magnum crank, Ti rods, Katech pistons, 242/248 .650/.650 cam
New motor Lingenfelter LS7 heads ( Delwest Ti intake/exhaust valves..coated through Richard), GM LS7 block 427 cu in, callies magnum crank, Ti rods, Diamond pistons, LPE GT-19 cam.
My engine builder had the WCCH LS7 heads flowed and said they were not much better than stock. Assuming that Richard has not changed the program, I'd say there are better options out there as I was only down 14 hp/19 trq at the wheels with NO cool down time before pulls and running a FULL POINT rivher on the tune ( 11.9 vs 12.9)
Here is a little comparo I've done for LS7 heads from several vendors ...
11-29-2009, 07:33 PM
#24
I just dyno'd my new motor (427 cu in vs teh older 454 cu in) LS7 and I had almost the same rear wheel hp/trq.
Old Motor, WCCH LS7 heads ( PVD coated valves, solid SS exhaust, milled 30 thou) 454 cu in Darton Resleaved Ls7 block, callies magnum crank, Ti rods, Katech pistons, 242/248 .650/.650 cam
New motor Lingenfelter LS7 heads ( Delwest Ti intake/exhaust valves..coated through Richard), GM LS7 block 427 cu in, callies magnum crank, Ti rods, Diamond pistons, LPE GT-19 cam.
My engine builder had the WCCH LS7 heads flowed and said they were not much better than stock. Assuming that Richard has not changed the program, I'd say there are better options out there as I was only down 14 hp/19 trq at the wheels with NO cool down time before pulls and running a FULL POINT rivher on the tune ( 11.9 vs 12.9)
...
Old Motor, WCCH LS7 heads ( PVD coated valves, solid SS exhaust, milled 30 thou) 454 cu in Darton Resleaved Ls7 block, callies magnum crank, Ti rods, Katech pistons, 242/248 .650/.650 cam
New motor Lingenfelter LS7 heads ( Delwest Ti intake/exhaust valves..coated through Richard), GM LS7 block 427 cu in, callies magnum crank, Ti rods, Diamond pistons, LPE GT-19 cam.
My engine builder had the WCCH LS7 heads flowed and said they were not much better than stock. Assuming that Richard has not changed the program, I'd say there are better options out there as I was only down 14 hp/19 trq at the wheels with NO cool down time before pulls and running a FULL POINT rivher on the tune ( 11.9 vs 12.9)
...
.
11-29-2009, 07:37 PM
#25
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We did not flow them but my engine builder flowed his ( same heads work except I went with PVD coated Ti exhaust valves) His flowed over 405 cfm on the intake.
My motor with the "baby" GT-19 put down more torque and "almost" more HP than the stock bottom end GT-21 packages they put together.
Of course, Some vendors take UP their HP/trq numbers and some are a bit more conservative in "published" specs.
My motor with the "baby" GT-19 put down more torque and "almost" more HP than the stock bottom end GT-21 packages they put together.
Of course, Some vendors take UP their HP/trq numbers and some are a bit more conservative in "published" specs.
11-29-2009, 08:06 PM
#26
We did not flow them but my engine builder flowed his ( same heads work except I went with PVD coated Ti exhaust valves) His flowed over 405 cfm on the intake.
My motor with the "baby" GT-19 put down more torque and "almost" more HP than the stock bottom end GT-21 packages they put together.
Of course, Some vendors take UP their HP/trq numbers and some are a bit more conservative in "published" specs.
My motor with the "baby" GT-19 put down more torque and "almost" more HP than the stock bottom end GT-21 packages they put together.
Of course, Some vendors take UP their HP/trq numbers and some are a bit more conservative in "published" specs.
What did they cost?
.
12-01-2009, 06:45 PM
#28
We did not flow them but my engine builder flowed his ( same heads work except I went with PVD coated Ti exhaust valves) His flowed over 405 cfm on the intake.
My motor with the "baby" GT-19 put down more torque and "almost" more HP than the stock bottom end GT-21 packages they put together.
Of course, Some vendors take UP their HP/trq numbers and some are a bit more conservative in "published" specs.
My motor with the "baby" GT-19 put down more torque and "almost" more HP than the stock bottom end GT-21 packages they put together.
Of course, Some vendors take UP their HP/trq numbers and some are a bit more conservative in "published" specs.
12-01-2009, 06:49 PM
#29
Glad to see you hooked up with Rich for some work.We've been dealing for awhile now. Our 07 Z06 project runs his heads.We left the stock Cam,did his heads,headers,FAST 102,ARH headers and are now pushing 520hp/495tq on our Mustang dyno.(before #'s were very close to yours)The car runs just as smooth as it came from the factory. Next mod is a very small Cam.
12-01-2009, 10:35 PM
#30
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BUT, I'm making "almost" the same power/trq with less cubes, same ti rods, same crank ( less stroke), Diamond vs. Katech pistons and a SMALLER camshaft.
The 427 is a tighter motor for sure ( piston/rings).
My builder had BOTH heads flowed, and I can tell you the LPE flowed MUCH more than the WCCH version I had, maybe that has changed since Richard did mine in fall of 2007, but mine didn't flow ANY more on intake and maybe 10-15 more on exhaust from what I remember.
No slam on Richard.... he is a great guy and supplied me with His custom Delwest Ti exhaust valves for my current heads ( and the PVD coating on all 16 valves)
Times change and so does the research/results for our LS motors.
From what I understand his L92 heads flow quite nicely.
Last edited by bowtiguy; 12-02-2009 at 12:49 PM.
12-02-2009, 08:08 AM
#31
I agree too many variables for a A/B comparo.
BUT, I'm making "almost" the same power/trq with less cubes, same ti rods, same crank ( less stroke), Diamond vs. Katech pistons and a SMALLER camshaft.
The 427 is a tighter motor for sure ( piston/rings).
My builder had BOTH heads flowed, and I can tell you the LPE flowed MUCH more than the WCCH version I had, maybe that has changed since Richard did mine in fall of 2007, but mine didn't flow ANY more on intake and maybe 10-15 more on exhaust from what I remember.
No slam on Richard.... he is a great guy and supplied me with His custom Delwest Ti exhaust valves for my current heads ( and the PVD coating on all 16 valves)
Tome schange and so does the research/results for our LS motors.
From what I understand his L92 heads flow quite nicely.
BUT, I'm making "almost" the same power/trq with less cubes, same ti rods, same crank ( less stroke), Diamond vs. Katech pistons and a SMALLER camshaft.
The 427 is a tighter motor for sure ( piston/rings).
My builder had BOTH heads flowed, and I can tell you the LPE flowed MUCH more than the WCCH version I had, maybe that has changed since Richard did mine in fall of 2007, but mine didn't flow ANY more on intake and maybe 10-15 more on exhaust from what I remember.
No slam on Richard.... he is a great guy and supplied me with His custom Delwest Ti exhaust valves for my current heads ( and the PVD coating on all 16 valves)
Tome schange and so does the research/results for our LS motors.
From what I understand his L92 heads flow quite nicely.
Had a car come in with a L92(ported) heads on a 402ci.Had a 236/242 Cam.Took that Cam out and did a 224/236 cam and gained 30hp/30tq across the whole curve while it drove alot better.
Of course head porting is getting better now.I'm still not sold on the LS7 heads or any of the high flowing heads.We still make the same power with heads flowing 100cfm less.
12-02-2009, 11:18 AM
#32
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12-02-2009, 12:28 PM
#33
I just think the H/C was not matched right at all on the bigger motor.Also the ring seal is important too.I had a 418ci motor redone and just a tighter motor made 60rwhp more with nothing else changed.=variables.
Had a car come in with a L92(ported) heads on a 402ci.Had a 236/242 Cam.Took that Cam out and did a 224/236 cam and gained 30hp/30tq across the whole curve while it drove alot better.
Of course head porting is getting better now.I'm still not sold on the LS7 heads or any of the high flowing heads.We still make the same power with heads flowing 100cfm less.
Had a car come in with a L92(ported) heads on a 402ci.Had a 236/242 Cam.Took that Cam out and did a 224/236 cam and gained 30hp/30tq across the whole curve while it drove alot better.
Of course head porting is getting better now.I'm still not sold on the LS7 heads or any of the high flowing heads.We still make the same power with heads flowing 100cfm less.
12-02-2009, 12:30 PM
#34
I just dyno'd my new motor (427 cu in vs teh older 454 cu in) LS7 and I had almost the same rear wheel hp/trq.
Old Motor, WCCH LS7 heads ( PVD coated valves, solid SS exhaust, milled 30 thou) 454 cu in Darton Resleaved Ls7 block, callies magnum crank, Ti rods, Katech pistons, 242/248 .650/.650 cam
New motor Lingenfelter LS7 heads ( Delwest Ti intake/exhaust valves..coated through Richard), GM LS7 block 427 cu in, callies magnum crank, Ti rods, Diamond pistons, LPE GT-19 cam.
My engine builder had the WCCH LS7 heads flowed and said they were not much better than stock. Assuming that Richard has not changed the program, I'd say there are better options out there as I was only down 14 hp/19 trq at the wheels with NO cool down time before pulls and running a FULL POINT rivher on the tune ( 11.9 vs 12.9)
Here is a little comparo I've done for LS7 heads from several vendors ...
Old Motor, WCCH LS7 heads ( PVD coated valves, solid SS exhaust, milled 30 thou) 454 cu in Darton Resleaved Ls7 block, callies magnum crank, Ti rods, Katech pistons, 242/248 .650/.650 cam
New motor Lingenfelter LS7 heads ( Delwest Ti intake/exhaust valves..coated through Richard), GM LS7 block 427 cu in, callies magnum crank, Ti rods, Diamond pistons, LPE GT-19 cam.
My engine builder had the WCCH LS7 heads flowed and said they were not much better than stock. Assuming that Richard has not changed the program, I'd say there are better options out there as I was only down 14 hp/19 trq at the wheels with NO cool down time before pulls and running a FULL POINT rivher on the tune ( 11.9 vs 12.9)
Here is a little comparo I've done for LS7 heads from several vendors ...
12-02-2009, 01:29 PM
#35
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Slowhawk, Are you saying..
1) the same cubes (427) and camshaft selection that the LS7 heads will NOT make more power..or the same as LS3??
OR
2) that you can make the same power with an LS3 with a matched H/C package as others have done with LS7 H/C packages.
I agree the cam should be matched to the heads you are using, regardless of build. Thats why the Katech Torquer works so well with the stock LS7 heads. That is also why I chose a proven head/cam package engineered to work with one another from an experienced vendor.
BTW, both Richard and Charie at RPM recommended the 242/248 .650 ish 114 LSA cam specs as Charlie had used Richards heads on a few builds before I finished mine.
12-03-2009, 09:14 AM
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I'll have some more dyno graphs with this particular motor in the next week or so. Since the heads, we've also added a LG Motor sports cat back, and we're getting the car back at the end of the week to install a RAM twin disc clutch, and FAST 102 with Nick Williams 102mm TB.
