FS: RHS LS7 frankenstien racing heads
03-28-2017, 09:42 AM
#1
Instructor
Thread Starter
Member Since: Dec 2008
Location: wilmington delaware
Posts: 229
Likes: 0
Received 3 Likes
on
3 Posts
RHS LS7 frankenstien racing heads
I have a set of used RHS 6 bolt heads off my c6z. Heads have around 3k miles and just got them back from Frankenstein racing. Had them go over the heads, perform a valve job and pressure check. They got the clean bill of health and ready to rock. Don't see my car going back together anytime soon, so might as well let these go. They have PAC 700" springs, titanium intake valve, and bronze valve guides. Including part number if someone needs any technical questions that I might not be able to answer. These are boxed up and ready to ship. 3500 shipped. Will have pictures later on today. LS7RR1310040
Last edited by red2001z06; 03-29-2017 at 01:11 AM.
03-28-2017, 11:38 AM
#2
Melting Slicks
I have a set of used RHS 6 bolt heads off my c6z. Heads have around 3k miles and just got them back from Frankenstein racing. Had them go over the heads, perform a valve job and pressure check. They got the clean bill of health and ready to rock. Don't see my car going back together anytime soon, so might as well let these go. They have PAC 700" springs, titanium intake valve, and bronze valve guides. Including part number if someone needs any technical questions that I might not be able to answer. These are boxed up and ready to ship. 3500 shipped. Will have pictures later on today. LS7RR1310040
03-28-2017, 10:33 PM
#3
Instructor
Thread Starter
Member Since: Dec 2008
Location: wilmington delaware
Posts: 229
Likes: 0
Received 3 Likes
on
3 Posts
Heads are 70cc stock size and as far as the other stuff, I honestly don't know. I remember the flow numbers being over 400cfm on the intake. I Had a shop do the motor. I have the part number off the heads that I just put up that should give you everything that was done if you wish to call Frankenstein. I can also try and call to.
Last edited by red2001z06; 03-28-2017 at 10:40 PM.
07-10-2017, 10:51 PM
#4
Heads are 70cc stock size and as far as the other stuff, I honestly don't know. I remember the flow numbers being over 400cfm on the intake. I Had a shop do the motor. I have the part number off the heads that I just put up that should give you everything that was done if you wish to call Frankenstein. I can also try and call to.
07-11-2017, 03:38 PM
#6
07-11-2017, 03:50 PM
#7
Instructor
Thread Starter
Member Since: Dec 2008
Location: wilmington delaware
Posts: 229
Likes: 0
Received 3 Likes
on
3 Posts
It got tuned on a mustang dyno which is horrible for numbers but track times were 10.3-10.4@ 137 with the compression being around 11.5. Car was built for spray but never got around to spraying it. Ill try and find the cam specs when I get home.
07-11-2017, 03:59 PM
#8
you are right about the mustang dynos they are a little low. Even on a mustang down what did it make?
Last edited by 441LSXTT; 07-11-2017 at 04:00 PM.
07-11-2017, 04:01 PM
#9
so these heads are milled a little to raise the compression from 11 to 11.5 correct?
07-11-2017, 04:41 PM
#10
Instructor
Thread Starter
Member Since: Dec 2008
Location: wilmington delaware
Posts: 229
Likes: 0
Received 3 Likes
on
3 Posts
I wanna say it was like 540ishhp 490tq. ill see if I can find the dyno sheet.
Last edited by red2001z06; 07-11-2017 at 04:43 PM.
07-11-2017, 11:16 PM
#11
No these are still pretty close to stock 70cc chamber. If you wanted to stick them on a stock bottom end then I would probable deck them some more. I have a built 441 and I got the piston compression I wanted with the stock chambered head. I just got them lightly skimmed to clean up the surface.
I wanna say it was like 540ishhp 490tq. ill see if I can find the dyno sheet.
I wanna say it was like 540ishhp 490tq. ill see if I can find the dyno sheet.