SystemaxII intake and Box stock RPM heads

NewAge 5.0 · 01-17-2002, 02:09 AM

I have the 2.02 RPM's and I am installing a Systemax I read somewhere that there will be a "lip" in the runners from the intake into the heads? now is that gonna be a prob?? I dont want to Remove the heads from the car so Portin the heads is outta the question.. do you think that even with this "lip" i will see noticeable gains from GT40 to holley?? also I have a post about the Tall FMS valve covers and needing a one inch spacer for that intake does that sound right to you guys runnin this intake?? Thanks alot!!

Rick 91GT · 01-17-2002, 04:51 PM

The Holley lower is just about a 1262 Fel-Pro, so if your heads are not ported to a 1262 there will be a step, this will create turbulance and cause a loss of some power..how much, I really don't know. However you should see a gain in power switching to the Holley over the GT-40.

I know I needed a 1" spacer with my fabbed alum valve covers and I had to grind down one of the bolt heads to get it not to rub...

exgmguy · 01-17-2002, 08:14 PM

I have the tall, black Motorsport covers and use no spacer. I did have to use a die grinder on a couple fins though.

I switched from a GT-40. The upper RPM power increase is awesome.

NewAge 5.0 · 01-18-2002, 12:41 AM

exgmguy., I have the tall alum. ones. that say Ford performance svo or something like that. You think i will need a one inch spacer too?? My heads are NOT ported do you think I should wait till I can afford to port my heads B4 installing the intake or will I see a gain w/o port work???

NewAge 5.0 · 01-18-2002, 12:52 AM

hey do you guys think that the one inch spacer hurts any power? does it help? should I ditch the tall covers and go back low profile?

01-17-2002, 02:09 AM	#1
NewAge 5.0 Registered Member Join Date: Mar 1999 Location: Sanford NC USA Posts: 155	SystemaxII intake and Box stock RPM heads I have the 2.02 RPM's and I am installing a Systemax I read somewhere that there will be a "lip" in the runners from the intake into the heads? now is that gonna be a prob?? I dont want to Remove the heads from the car so Portin the heads is outta the question.. do you think that even with this "lip" i will see noticeable gains from GT40 to holley?? also I have a post about the Tall FMS valve covers and needing a one inch spacer for that intake does that sound right to you guys runnin this intake?? Thanks alot!! __________________ 88 Hatch 10.60's @ 130 89 Hatch Not as fast but holds its own

01-17-2002, 04:51 PM	#2
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	The Holley lower is just about a 1262 Fel-Pro, so if your heads are not ported to a 1262 there will be a step, this will create turbulance and cause a loss of some power..how much, I really don't know. However you should see a gain in power switching to the Holley over the GT-40. I know I needed a 1" spacer with my fabbed alum valve covers and I had to grind down one of the bolt heads to get it not to rub... __________________ *D/R 10108 NMRA Drag Radial, 25.5 chassis, F1R* *Check out RNH Performance Performance Engines and Custom Fabrication.* *From Mild to Wild we can build what you want, when you want it.* FOR SALE Stainless Steel Torque Box Supports

01-18-2002, 12:41 AM	#4
NewAge 5.0 Registered Member Join Date: Mar 1999 Location: Sanford NC USA Posts: 155	exgmguy., I have the tall alum. ones. that say Ford performance svo or something like that. You think i will need a one inch spacer too?? My heads are NOT ported do you think I should wait till I can afford to port my heads B4 installing the intake or will I see a gain w/o port work??? __________________ 88 Hatch 10.60's @ 130 89 Hatch Not as fast but holds its own

01-18-2002, 12:52 AM	#5
NewAge 5.0 Registered Member Join Date: Mar 1999 Location: Sanford NC USA Posts: 155	hey do you guys think that the one inch spacer hurts any power? does it help? should I ditch the tall covers and go back low profile? __________________ 88 Hatch 10.60's @ 130 89 Hatch Not as fast but holds its own

01-17-2002, 08:14 PM	#3
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	I have the tall, black Motorsport covers and use no spacer. I did have to use a die grinder on a couple fins though. I switched from a GT-40. The upper RPM power increase is awesome.