2000redcamaro

is anyone on here running the mast heads? i bought some for my 408 build. im hoping that will make some good power. any feed back on these would be great.

Jimbo1367

They look like junk. I'll let you know how they work holding my door open. LOL. Heard ALOT of good things about MAST heads.

ULTIMATEORANGESS

iTrader: (4)

ive been told MAST is the head to go with.

those castings look beefy.

CAMSTER

iTrader: (10)

part #510-307 Large bore ls7 have 274cc intake port volume flows 395 cfm, going on my new N-A 441Ci lsx block bore-out to 4" 185. on E85 with 12.8 comp, engine put together, hope to have it running this month time allowing

https://ls1tech.com/forums/generatio...t-pix-now.html

jalper

iTrader: (9)

what is the big difference in the heads, i herd that the ls3 head is a good head but the ex-valve was to small, is there any change in the size compared to stock.

CAMSTER

iTrader: (10)

just compare the numbers, and the C Cs, [intake ports volume] then the deck-or base of the head thickness, there's no comparison ...

Petraszewsky

iTrader: (28)

Get these put on yet? I'm wondering how much of a power difference these would be from getting my LS3 heads CNCd. I would be getting the large bore ls3 mast heads if I got them.

dwill73

What intake? solid roller setup? I've heard of two motors making 950fwhp N/A with those heads with a solid roller, 14.5 compression, and the Mast intake. Either way they are some awesome heads and you made a very wise choice IMO.

dwill73

exactly

COPO9560

Large bore heads require 4.125 inch bore - may as well get MAST's LS7 heads at this point, price nearly the same.

To the OP - great looking heads. What are your goals? I'm interested in how this build turns out. Can you send more details on cam? FAST or LS3 intake?

dwill73

X2, Plus the Ls7 is a better port design then the Ls3

hymey

I seen the mast LS3 11 deg heads pick up 52 rwhp and 5 mph OUT THE BOX over stock LS3 heads in a camaro, so yeah they work.

bunker

iTrader: (1)

the 11* must do it, but i wonder how they compare to GMPP CNC LS3 heads out of the box. compare apples to apples

fatboyzcamaro

iTrader: (7)

keep us posted need info like others.

KJS408

I'd like to know that as well, the GMPP CNC LS3 heads are what I bought for my 408 build and are half the cost, it would have to blow them out of the water for me to buy the Mast Black Labels.

Petraszewsky

iTrader: (28)

Great article on LS3 heads....There are many more but this is a good one..

http://hotrod.automotive.com/151810/...est/index.html

flintwrench69

iTrader: (11)

Better valve angle, great flow numbers, beefy castings & quality valvetrain components I really dont see how you could go wrong with these. Just about the best LS heads youre gonna find anywhere.

2000redcamaro

car is finally running now. build went way over what i was wanting to spend. should be dyno'd in the next few days. ill post the sheet. everything i have heard and read about these heads is awesome. im looking for 550rwhp ish N/A for a street car. will spray is it later (kid on the way) thanks for the imput guys

2000redcamaro

goal is to have a 9 sec street car i can drive anywhere. im using the ls3 intake since mast said there is only a 7hp gain over stock ls3 with the fast 102. the cam is 238/248-650/650-110.

litle88

iTrader: (20)

Oh man I'm subscribed bud!