SHORT ANSWER! STOP BEATING A LONG DEAD HORSE!!
http://www.camaro-untoldsecrets.com/art ... ossram.htm
http://www.thecubestudio.com/CrossfireT ... sIndex.htm
viewtopic.php?f=32&t=640
heres more good info, above if you insist on beating that dead horse
Ive been playing at the hp wars for years,your stock heads,intake, displacement and compression ratio and cam are killing performance. the cross fire intake is the worst offender as it only flow about 170cfm-190cfm
swapping to a EDELBROCK SY1 OR OFFY CROSSRAM INTAKE with CUSTOM LID removes that resriction
THE EXTREMELY RESTRICTIVE STOCK INTAKE
custom lid SY1
compare the ports, the SY1 flows about 270cfm
<b>"A MODIFED EDELBROCK SY1 WITH CUSTOM TOP MATCHED TO 190CC AFR HEADS CRANE 114142 CAM -- AND add a 383 high compression engine kit"
b>
BTW Ill save you the math, youll need to get the 10:1 cpr flat top piston 383 kit for the street, and the 74cc combustion chambers AFR 190cc HEADS with L98 spark plug angles if you intend to run high test gas you find everywhere (some is lousy quality) and get the head gasket as close to .018-.022 as you can for correct quench
fyi DD-2000 and EA pro both guess at OVER a 115 hp improvement at the rear wheels, having done this type mod in the past Im reasonably sure thats UNDERESTIMATED for those listed changes
383 rebuild kit $1000
http://www.strokerkits.com/383.htm
crane cam/lifters $150
AFR heads $1200 http://www.flatlanderracing.com/cylhead_index.html
SY1 with custom lid $500-$600
DOING YOUR OWN WORK>>>>>PRICELESS! :thumbs: :thumbs:
offy
Part numbers are 5893 base,
http://store.summitracing.com/partd...1&part=OFY-5893&N=700+400429+115&autoview=sku
5903 for the dual-four top,
http://store.summitracing.com/partdetail.asp?part=OFY-5903
5902 for the linkage.
http://store.summitracing.com/partdetail.asp?part=OFY-5902
both SUMMIT AND JEGS CAN GET IT FOR YOU
MORE USEFUL INFO
http://www.swko.net/~lionsden/crossfire.htm
http://www.swko.net/~lionsden/crossfire1.htm
unless your rich or hopelessly masochistic get a SY1 or OFFY BASE
the sy1 flows close to 270cfm out of the box, a cfi flows 170-190cfm (DEPENDS ON WHICH PORT (STOCK) and theres not enought room to port without cutting/welding (EXPENSIVE AND TIME CONSUMEING AND EASILY SCREWED UP)
these are the STOCK CFI INTAKE RUNNERS,
you can extensively port them
and its a big improvement over stock.............but they are still EXTREMELY RESTRICTIVE, and its not a huge help, if your looking to make significant hp
THEY WILL NOT SUPPORT A LARGE INCREASE IN HP WITHOUT MASSIVE CUTTING AND REWELDING WORK,WHICH COSTS FAR MORE AND WORK FAR LESS EFFECTIVELY THAN AN SY1 SWAP WITH A CUSTOM LID
this is the port work necessary to get them to flow even as pittifly as a TPI
BTW
IVE used BOTH the SY1 and OFFY intakes, any differance in thier basic rpm band is minimal even thought the runners are slightly differant, and your cam,timing, compression ratio, engine displacement, cylinderr head design,displacement,rear gear ratio and carb or tb flow rates also have a huge effect on the engines charicteristics, alot more than the slight differance between the runner length and cross sectional area differance in the two intakes
http://www.camaro-untoldsecrets.com/art ... ossram.htm
http://www.thecubestudio.com/CrossfireT ... sIndex.htm
viewtopic.php?f=32&t=640
heres more good info, above if you insist on beating that dead horse
Ive been playing at the hp wars for years,your stock heads,intake, displacement and compression ratio and cam are killing performance. the cross fire intake is the worst offender as it only flow about 170cfm-190cfm
swapping to a EDELBROCK SY1 OR OFFY CROSSRAM INTAKE with CUSTOM LID removes that resriction
THE EXTREMELY RESTRICTIVE STOCK INTAKE
custom lid SY1
compare the ports, the SY1 flows about 270cfm
<b>"A MODIFED EDELBROCK SY1 WITH CUSTOM TOP MATCHED TO 190CC AFR HEADS CRANE 114142 CAM -- AND add a 383 high compression engine kit"
b>
BTW Ill save you the math, youll need to get the 10:1 cpr flat top piston 383 kit for the street, and the 74cc combustion chambers AFR 190cc HEADS with L98 spark plug angles if you intend to run high test gas you find everywhere (some is lousy quality) and get the head gasket as close to .018-.022 as you can for correct quench
fyi DD-2000 and EA pro both guess at OVER a 115 hp improvement at the rear wheels, having done this type mod in the past Im reasonably sure thats UNDERESTIMATED for those listed changes
383 rebuild kit $1000
http://www.strokerkits.com/383.htm
crane cam/lifters $150
AFR heads $1200 http://www.flatlanderracing.com/cylhead_index.html
SY1 with custom lid $500-$600
DOING YOUR OWN WORK>>>>>PRICELESS! :thumbs: :thumbs:
offy
Part numbers are 5893 base,
http://store.summitracing.com/partd...1&part=OFY-5893&N=700+400429+115&autoview=sku
5903 for the dual-four top,
http://store.summitracing.com/partdetail.asp?part=OFY-5903
5902 for the linkage.
http://store.summitracing.com/partdetail.asp?part=OFY-5902
both SUMMIT AND JEGS CAN GET IT FOR YOU
MORE USEFUL INFO
http://www.swko.net/~lionsden/crossfire.htm
http://www.swko.net/~lionsden/crossfire1.htm
unless your rich or hopelessly masochistic get a SY1 or OFFY BASE
the sy1 flows close to 270cfm out of the box, a cfi flows 170-190cfm (DEPENDS ON WHICH PORT (STOCK) and theres not enought room to port without cutting/welding (EXPENSIVE AND TIME CONSUMEING AND EASILY SCREWED UP)
these are the STOCK CFI INTAKE RUNNERS,
you can extensively port them
THEY WILL NOT SUPPORT A LARGE INCREASE IN HP WITHOUT MASSIVE CUTTING AND REWELDING WORK,WHICH COSTS FAR MORE AND WORK FAR LESS EFFECTIVELY THAN AN SY1 SWAP WITH A CUSTOM LID
this is the port work necessary to get them to flow even as pittifly as a TPI
BTW
IVE used BOTH the SY1 and OFFY intakes, any differance in thier basic rpm band is minimal even thought the runners are slightly differant, and your cam,timing, compression ratio, engine displacement, cylinderr head design,displacement,rear gear ratio and carb or tb flow rates also have a huge effect on the engines charicteristics, alot more than the slight differance between the runner length and cross sectional area differance in the two intakes