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Old 07-23-2013, 07:39 PM   #1
croatbob
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Decided to bite the bullet n opt for 6 bolt heads instead of a set of wcch stage 2 ls7 heads. That way if the hp bug bites I've got the heads for a aggressive build. Prob leaning towards a set of mast 305s but what other quality options should I consider? Prc 285cc heads? Rhs 291cc heads? War hawk 12degree heads?
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Old 07-23-2013, 08:04 PM   #2
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Running PRC 285 without issue. Do you have a 6 bolt block or are you doing it just for the thicker decks or plans to upgrade later?

Any of them are pretty nice. The brodix look like a nice choice. Mast are good if you want to pay the extra.
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Old 07-23-2013, 08:17 PM   #3
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Stock block but if I decide to go crazy I have the heads to suit. Stock heads run out 900rwhp from what I've been told. Mite aswell invest in 6 bolt n sell mine off. Works out only a lil more than doin mine up. Also prc work out 3k with s/s valves n the mast are 3500 but most builders prefer the mast for quality n price. Undecided
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Old 07-24-2013, 01:54 AM   #4
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I'd go with the Mast heads.
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Old 07-24-2013, 02:12 AM   #5
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Quote:
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Stock block but if I decide to go crazy I have the heads to suit. Stock heads run out 900rwhp from what I've been told. Mite aswell invest in 6 bolt n sell mine off. Works out only a lil more than doin mine up. Also prc work out 3k with s/s valves n the mast are 3500 but most builders prefer the mast for quality n price. Undecided

If the question is mast or PRC than mast for $500 is a no brainer. Not sure who told you a stock casting is only good to 900rwhp? We have made 1000 + to the wheels on 4 bolt stock casting plenty of times.My last motor made 1105rwhp and i'm confidant it would have taken more. Never turned it up past that.That was with a stock ls9 head. Little better casting but still. Your tuner is what matters. A bad tuner can push water in any setup. The WCCH ALLPro retro head would be at the top of my list.Along with the mast 305. If your looking for a budget 6 bolt than based on experience with the older cathedral castings from TFS i'd say their new ls3 6 bolt casting might be something to look at.
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Old 07-24-2013, 03:15 AM   #6
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Click the image to open in full size.

Click the image to open in full size.

My All Pro LS7 retros I just picked up from WCCH. Very nice
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Old 07-24-2013, 05:16 AM   #7
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ERL recommended Brodix BR7 heads for 1k to 1.3k hp boosted application. Took those and complete long block they built should arrive now finally in next two weeks!!!

Last edited by Tuomas FIN; 07-24-2013 at 06:54 AM.
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Old 07-24-2013, 06:35 AM   #8
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that's who recommended mine, I also had ERL convert my LS 7 block into the super deck 6 bolt with half inch studs
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Old 07-24-2013, 07:45 AM   #9
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ERL recommended Brodix BR7 heads for 1k to 1.3k hp boosted application. Took those and complete long block they built should arrive now finally in next two weeks!!!
The brodix look a lot smaller than the mast setup which I'm leaning towards at the mo
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Old 07-24-2013, 07:47 AM   #10
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Click the image to open in full size.

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My All Pro LS7 retros I just picked up from WCCH. Very nice
The all pros are close to 5k complete aren't they? I think the mast 305 represent better bang for buk
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Old 07-24-2013, 08:24 AM   #11
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It isn't a $500 difference between PRC and mast, it is $1300. The $3500 mast have SS intake valves which is $2300 for the PRC heads. The $3000 PRC heads are Ti valves. Add $800-900 to the mast for TI valves which brings them to $4300-4400 for Ti valves.
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Old 07-24-2013, 08:28 AM   #12
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Are u guys running the mast 305s running with the upgraded Titan valves or sticking with the lightened stainless valves on boosted applications where a huge cam
Is not required?
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Old 07-24-2013, 08:56 AM   #13
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If you want to rev it high at all with a huge intake valve I would keep the Ti valves. Otherwise I would plan on lowering redline a bit.
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Old 07-24-2013, 09:02 AM   #14
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I think my heads were 5300 and that was with CHE bushed rockers instead of the needle bearing ones. I believe they have inconel stainless exhaust valves and titanium intake valves they were also CNC ported. both Andy from A&A and seth from the E RL both recommended Richard at West Coast cylinder head. if your pricing out cylinder heads make sure you compare all the upgrades
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Old 07-24-2013, 09:10 AM   #15
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If you want to rev it high at all with a huge intake valve I would keep the Ti valves. Otherwise I would plan on lowering redline a bit.
It's boosted so no need for big lift cam or high rpms. Mite throw em in for security anyways
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Old 07-24-2013, 10:13 AM   #16
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Ls7 already has high lift and high RPMs so unless you want to downgrade from stock, I would do them. No other LS motor has a huge 2.2" intake valve. There is a reason they are Ti factory. People complain enough about a heavy SS exhaust valve, I don't even want to know how bad a SS intake valve that size with boost pushing against it would be.
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Old 07-24-2013, 10:26 AM   #17
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Ls7 already has high lift and high RPMs so unless you want to downgrade from stock, I would do them. No other LS motor has a huge 2.2" intake valve. There is a reason they are Ti factory. People complain enough about a heavy SS exhaust valve, I don't even want to know how bad a SS intake valve that size with boost pushing against it would be.
cheers bud. was leaning towards it anyways to suit a future bottom end build. also leaning towards mast ova prc for the extra flow and some builders look at me funny when i suggest any of texas speeds products.
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Old 07-24-2013, 10:35 AM   #18
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also is my best bet purchasing direct from mast or do they have distributors that do better deals?
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Old 07-24-2013, 10:46 AM   #19
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Quote:
Originally Posted by pamperedcar1 View Post
I think my heads were 5300 and that was with CHE bushed rockers instead of the needle bearing ones. I believe they have inconel stainless exhaust valves and titanium intake valves they were also CNC ported. both Andy from A&A and seth from the E RL both recommended Richard at West Coast cylinder head. if your pricing out cylinder heads make sure you compare all the upgrades
Mine were $ 6050 from ERL and they included:

1 set - BR 7 CNC Brodix LS7 CNC porter's casting.
1 set - DV-WCCHIVLS7... Del West Titanium LS7 intake valve w/ hard tip insert. C/N coated.
1 set - SL7047 REV Inconel exhaust valve. GM LS7. 1.615" X 8mm stem 5.230"
w/beadlock groove. 45 seat angle.
1 set - CHE Valve Guide CHE Precision bronze valve guide
1 set - 221435-kit Manley 1.350" dual spring kit assembly (includes viton valve seals)
1 set - CHE LS7-N-16 CHE Precision LS7 rocker arm set. New rocker bodies (outright).
1 set - CNC BR 265-99-71 CNC Porting 265-99-71 for all Brodix BR7 castings
1 set - Hone to size Hone Guides to size
1 set - Comp V8 Competition Valve Job V8 Cylinder Heads
1 - Surface V8 & V6 Surface V8 Cylinder Heads .030" (to 65cc chamber size)
1 - Assemble Wash and finish assembly.
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Old 07-24-2013, 11:17 AM   #20
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Lol your post reads word for word what my receipt from WCCH says, the only difference is all pro and Brodix. I did not buy an assembled motor from Erl because I already had a boosted application that's why erl told me to get them from WCCH I was just making changes to my build because I wasn't happy with the horsepower output. I know you can't wait to get yours back together I'll be installing in about a week but I'm dreading the tuning process all over again
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Old 07-24-2013, 11:17 AM
 
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