| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
11-21-2011, 08:47 PM
|
|||
|
|||
6x(8) head specs
I have a set of stock heads and was wondering what the valve, valve guide, seat and spring specs are for these heads im taking them apart in class and have no paper work for them
__________________
78 firebird 400/t400 |
|
#2
11-22-2011, 08:37 AM
|
||||
|
||||
|
All 6X heads in stock form have 2.11" Intake valves and use a 30 degree seat.
The Exhaust valves are 1.66"and use a 45 degree seat. Both valves are 11/32" stem. Seat pressure was about 110 LBs, and I know that the installed height is about 1.56", but when you knock them apart you can measure that. On the two verticle cast towers on each head that the air conditioning bracket would bolt to, one on each head will have a stamped number. A number 4 would be the small chamber head 90 CCs, and the stamping 8 is the larger chamber head of some 98 to 101 CCs. These heads can only handle about 490" of valve lift before retainer to guide clearance problems set in.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
|
#3
11-22-2011, 11:27 AM
|
||||
|
||||
|
My original 180 HP motor's 6X-8s were 97.5cc.
__________________
Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
