croatbob

my thoughts exactly. same mob that makes the rhs blocks?

breecher_7

I have a set of the RHS LS7 units in my machining center right now...

I still like the MAST ones better.

croatbob

damn by the time u add ti valves on the mast 305s u get no change out of 5k. can they really be that much better than prc and rhs at 3k?

http://www.racingheadservice.com/rhs...501-06tts.html

if there heads are anything like there blocks they should be pretty good

newschool

I wouldn't let PRC port a stock casting for me let alone provide me with one of their castings.You ever wonder why no engine builder uses them??

croatbob

i assume they are still of good quality tho? mast 5k. rhs 3k. we arent talkin chump change difference.

croatbob

yeah most builders have told me similar. the rhs mite be a good alternative for the prc

newschool

From what i have seen the RHS casting has little improvements aside from the extra bolts over a stock casting. I had a set of world castings on my tall deck motor and they had all kinds of stupid going on with them.

croatbob

ah crap! price is per head not a pair the way im reading it. (rhs) mast 305 cheaper n betta option then

nareg

What about the new trick flow heads? They're approximately $2500 a set.

croatbob

245cc?

nareg

I believe it's 255cc. From what I read it works with LS3 and LS7. I'm on the fence of getting those for my car but it would be nice to get some feedback from someone using them on a FI LS3 or LS7 1st.

croatbob

245cc. Uwilluz uses em on his tt z06 that makes 1000+. Currently selling his ride on this forum

croatbob

Does the factory rocker gear bolt up to the mast heads? Fitting is purely remove the old heads n fit the new ones or addition things need to be purchased besides gaskets n fluids etc

Unreal

TFS head is ls3 style port so would need a different intake manifold/rockers/pushrods/etc.

croatbob

trick flow? yeah not goin that way. wanna kno if the stock rockers will fit the mast 305s as the manifold etc will

playtoy

Yes they will. Stock Bolted right up to mine

ZO6er

Black Label FTW!!

croatbob

Trying to decipher your comment? Lol

Unreal

Mast is Black Label. That is their name for their products. FTW is for the win, LOL is laugh out loud FWIW.

croatbob

ok guys last question before i order. which upgrade do you guys suggest?



Rocker Stands? no need due to stock rockers correct?
Inconel Exhaust Valves....not much more than stainless so why not or light weight stainless be more than enough?
Flat Mill Decks???
TL-RET10: Tool Steel/titanium Retainers?? steel retainers be fine or should i go titanium?

cheers lads