440cid short block!
Thread Starter
Instructor
Joined: Jan 2010
Posts: 166
Likes: 1
440cid short block!
am currently building an Ls7 440cid short block for my C6Z06, was wondering,, what are the best ls7 heads that will put me right over 600rwhp.
i have the 102mm throttle body, 102mm fast intake, ARH
cam is 246/257 660/660 111+2
COMPRESSION WILL BE 11.7 with 70cc heads:crazy
vendors, tech's, users.. please advice
i have the 102mm throttle body, 102mm fast intake, ARH
cam is 246/257 660/660 111+2
COMPRESSION WILL BE 11.7 with 70cc heads:crazy
vendors, tech's, users.. please advice
Burning Brakes
Joined: Nov 2008
Posts: 908
Likes: 66
From: Lower RGV
St. Jude Donor '10-'11-'12
I think the Mast heads are pretty good. From what I saw of a comparison test a couple of years back, they came out on top vs. ported stock and other after market. I think they're about $1700 per head assembled.
Speedy
Joined: Mar 2007
Posts: 6,107
Likes: 931
From: Tn
2024 C8 of the Year Finalist - Modified
ill be running RHS LS7 Cylinder heads on my TT 440 project
P-Port (w/o Valve Job)
12° Valve angle & .220" raised intake runner over stock LS7 provide better line of sight into cylinders and short turn
100% CNC-machined runners optimize volume, atomization & velocity 355T6 Aerospace-grade aluminum is lightweight and increases cylinder head life as well as strength
Popular 6-bolt head design increases clamping capacity for improved head gasket retention on high horsepower & boosted applications
Compatible with popular RHS® LS Race & GM LSX Blocks
.750" Thick deck surface improves integrity in high cylinder pressure applications
.400" Raised rail allows for use with aftermarket rockers; .100" raised exhaust port allows use of both stock & aftermarket manifolds
Improved overall flow capabilities & water jacket design
Can be used in both small & large cubic inch, hardcore street application
P-Port (w/o Valve Job)
12° Valve angle & .220" raised intake runner over stock LS7 provide better line of sight into cylinders and short turn
100% CNC-machined runners optimize volume, atomization & velocity 355T6 Aerospace-grade aluminum is lightweight and increases cylinder head life as well as strength
Popular 6-bolt head design increases clamping capacity for improved head gasket retention on high horsepower & boosted applications
Compatible with popular RHS® LS Race & GM LSX Blocks
.750" Thick deck surface improves integrity in high cylinder pressure applications
.400" Raised rail allows for use with aftermarket rockers; .100" raised exhaust port allows use of both stock & aftermarket manifolds
Improved overall flow capabilities & water jacket design
Can be used in both small & large cubic inch, hardcore street application
