CR for a stoker
07-02-2003, 11:02 AM
#1
TECH Veteran
Thread Starter
Join Date: Aug 2002
Location: Hartsdale, NY
Posts: 4,055
Likes: 0
Received 0 Likes
on
0 Posts
CR for a stoker Visiting "CarMath.com" recently I calculated the compression ratio of a proposed stroker at 15.33 to 1!!!!
Variables were:
Bore 4.0 (stock LQ4 iron block)
Stroke 4.125
chamber = 60CC
deck hieght = 0???
Holes = 8
valve relief = -10CC
Is this correct; How can I reduce the CR to around 10.5 to 1?
Variables were:
Bore 4.0 (stock LQ4 iron block)
Stroke 4.125
chamber = 60CC
deck hieght = 0???
Holes = 8
valve relief = -10CC
Is this correct; How can I reduce the CR to around 10.5 to 1?
07-02-2003, 03:05 PM
#2
Re: CR for a stoker For that combo, I get 11.5:1 using a 0.054" thick gasket. I have a question or two for:
1) What heads are you using to get 60cc? milled 0.02" 5.3L...
2) -10cc for valve reflief is quite a bit, what size cam are you going to run?
1) What heads are you using to get 60cc? milled 0.02" 5.3L...
2) -10cc for valve reflief is quite a bit, what size cam are you going to run?
07-02-2003, 03:38 PM
#3
TECH Veteran
Thread Starter
Join Date: Aug 2002
Location: Hartsdale, NY
Posts: 4,055
Likes: 0
Received 0 Likes
on
0 Posts
Re: CR for a stoker Thx....
60cc combustion chambers are from a SDPC ls6 Lingenfelter ported head that has been milled .055 (the ASA heads that everyone is selling, PACE, SDPC, GMPP, etc.)
Cam for stroker is not known yet, my current cam is 220/220, 564/564, 112 LSA....
...is this cam too small for a 414ci stroker?
60cc combustion chambers are from a SDPC ls6 Lingenfelter ported head that has been milled .055 (the ASA heads that everyone is selling, PACE, SDPC, GMPP, etc.)
Cam for stroker is not known yet, my current cam is 220/220, 564/564, 112 LSA....
...is this cam too small for a 414ci stroker?
07-02-2003, 05:36 PM
#4
TECH Apprentice
Join Date: Feb 2002
Location: tega cay, SC
Posts: 363
Likes: 0
Received 0 Likes
on
0 Posts
Re: CR for a stoker
Thx....
60cc combustion chambers are from a SDPC ls6 Lingenfelter ported head that has been milled .055 (the ASA heads that everyone is selling, PACE, SDPC, GMPP, etc.)
Cam for stroker is not known yet, my current cam is 220/220, 564/564, 112 LSA....
...is this cam too small for a 414ci stroker?
60cc combustion chambers are from a SDPC ls6 Lingenfelter ported head that has been milled .055 (the ASA heads that everyone is selling, PACE, SDPC, GMPP, etc.)
Cam for stroker is not known yet, my current cam is 220/220, 564/564, 112 LSA....
...is this cam too small for a 414ci stroker?