Too Much or Not Enough.

1969 Stang · 12-20-2003, 02:27 AM

I bought all the typical mods for my motor and it still does not seam to have the power i want.

Holley 4160
Ported performer dual plane
Windsor sr. heads.
hooker super comp headers.
free flowing exhaust.
Comp cams roller rockers 1.6

only thing stock is cam.

so thinking im running lean or rich.
haved tried many jets from 65 to 68's and cant seem to find any differance. plugs look tan and seem so make no change.
also tried plug gap with no differance.

what is restricing my power here? what else should i try.
only thing left to upgrade is cam.

motor builds rpm pretty good but just does not seem to have it.
c4 trans with 3.55's 2,800 lbs 66 coupe.

Trey Ragsdale · 12-21-2003, 12:50 PM

What type and size motor, header size? Which stock cam? Stick or auto?

Trey Ragsdale · 12-21-2003, 12:52 PM

Sorry I overlooked your C-4 description. How high does it stall?

1969 Stang · 12-21-2003, 01:21 PM

this is my friends posting apparently he used my name...lol...he has his own. brandyn use your name...lol...he was at my house. btw his stall is stock

mustangman65_79 · 12-22-2003, 07:53 AM

With those mods, the cam is killing u. The heads alone are too much for a stock cam. I bet u money, if u get yourself a nice cam, a lot of that missing power will show up. U also will need to get at least a 2000 stall convert.

Trey Ragsdale · 12-22-2003, 05:54 PM

Without knowing what size engine and which "stock" cam (some stock cams make great combinations) you have it's hard to say how much potential is there with a cam change - but I'm still guessing there is a significant improvement there. You do need to be careful not to over cam your combo with that stock stall converter. You'll need a "fast action" cam - quick valve action which will call for less duration while increasing lift. This opens another can of worms as a good strong valve spring is necessary and preferably a roller cam (hydraulic). An early intake opening, somewhere in the 108-110 degree area will help with bottom end power - something you'll need with that automatic as well as proper ignition timing and curve. Good luck!

12-20-2003, 02:27 AM	#1
1969 Stang Registered Member Join Date: Dec 2001 Location: Pomona, CA Posts: 93	Too Much or Not Enough. I bought all the typical mods for my motor and it still does not seam to have the power i want. Holley 4160 Ported performer dual plane Windsor sr. heads. hooker super comp headers. free flowing exhaust. Comp cams roller rockers 1.6 only thing stock is cam. so thinking im running lean or rich. haved tried many jets from 65 to 68's and cant seem to find any differance. plugs look tan and seem so make no change. also tried plug gap with no differance. what is restricing my power here? what else should i try. only thing left to upgrade is cam. motor builds rpm pretty good but just does not seem to have it. c4 trans with 3.55's 2,800 lbs 66 coupe. __________________ Go Ahead.... Unleash your beast.... Mine will be waiting.... Ricer Hater's Club - Member #37

12-21-2003, 12:50 PM	#2
Trey Ragsdale Registered Member Join Date: Jan 2001 Location: Buda, Tx., US Posts: 15	What type and size motor, header size? Which stock cam? Stick or auto? __________________ Blue 70 Mach I. Magnums, louvers. 351W, C-6 w/GV overdrive. High 12's/107.

12-21-2003, 12:52 PM	#3
Trey Ragsdale Registered Member Join Date: Jan 2001 Location: Buda, Tx., US Posts: 15	Sorry I overlooked your C-4 description. How high does it stall? __________________ Blue 70 Mach I. Magnums, louvers. 351W, C-6 w/GV overdrive. High 12's/107.

12-21-2003, 01:21 PM	#4
1969 Stang Registered Member Join Date: Dec 2001 Location: Pomona, CA Posts: 93	this is my friends posting apparently he used my name...lol...he has his own. brandyn use your name...lol...he was at my house. btw his stall is stock __________________ Go Ahead.... Unleash your beast.... Mine will be waiting.... Ricer Hater's Club - Member #37

12-22-2003, 07:53 AM	#5
mustangman65_79 My poor 79 RIP Join Date: Oct 2001 Location: Suisun City, Posts: 2,320	With those mods, the cam is killing u. The heads alone are too much for a stock cam. I bet u money, if u get yourself a nice cam, a lot of that missing power will show up. U also will need to get at least a 2000 stall convert. __________________ '84 mustang GT turbo '85 LTD '89 Camaro Irocz z28 '94 Lightning '96 Trans am

12-22-2003, 05:54 PM	#6
Trey Ragsdale Registered Member Join Date: Jan 2001 Location: Buda, Tx., US Posts: 15	Without knowing what size engine and which "stock" cam (some stock cams make great combinations) you have it's hard to say how much potential is there with a cam change - but I'm still guessing there is a significant improvement there. You do need to be careful not to over cam your combo with that stock stall converter. You'll need a "fast action" cam - quick valve action which will call for less duration while increasing lift. This opens another can of worms as a good strong valve spring is necessary and preferably a roller cam (hydraulic). An early intake opening, somewhere in the 108-110 degree area will help with bottom end power - something you'll need with that automatic as well as proper ignition timing and curve. Good luck! __________________ Blue 70 Mach I. Magnums, louvers. 351W, C-6 w/GV overdrive. High 12's/107.