Z303, Anyone running it???

Mean50 · 01-10-2002, 06:18 PM

My friend is wanting to trade a new Z303 cam to me. I was wondering if I would have to have the pistons fly cut in order to run it. I am running flat top pistons with the Holley aluminum heads with 1.94/1.60 valves. Is this a good cam to run with nitrous? Thanks for the advice!

Mean50 · 01-12-2002, 09:09 PM

Can anybody help me out please???

Five0 · 01-12-2002, 09:15 PM

I am not a cam expert but I would think that would be a little too much cam for your combination. I do not know how much clearance those pistons will allow but I would think it would clear but you might have problems and the only way to be sure is to check clearance when installing it.
I think the x cam would be a better choice but an even better idea would be to call comp cams cam hotline and ask what they recommend.

Almost any cam with a split pattern should be a good nitrous cam.

Mean50 · 01-13-2002, 04:03 PM

Thanks for your input, but it says in my sig that I still have fuel injection on my car, but I just recently changed it over to carb. The carb is a 750 Double Pumper with a Victor Jr. intake!!! I really need to know the answer to question in my first post about my valves and the Z303 cam??? Thanks again

Five0 · 01-13-2002, 05:53 PM

I would think it would clear but I don't think anyone is going to be able to tell you for sure. You will have to check your clearance when you get it. I still think it is too big for what you have.

Mean50 · 01-13-2002, 07:11 PM

Well I plan on doing some porting and eventually getting higher compression pistons or even a 347. I would really like to go to the 408 but right now it isn't in my budget for the extra parts that I would need.

Mean50 · 01-13-2002, 07:19 PM

James
Are you running carb or EFI?

Five0 · 01-13-2002, 07:21 PM

For a 347 it might be a good cam but for what you have now you would have to spin the hell out of it.

Don't get too carried away with the cam or you will not be getting the most out of your combo.

I would still call comp cams and ask what they recommend for what you have and want to do. JMO

Mean50 · 01-13-2002, 11:41 PM

What size cam are you running your combo? and what exactly is your combo?

Five0 · 01-14-2002, 06:54 AM

When I had the 302 I was running a 224/230@.050 w/.544 lift and 112 lobe.

I am running a 347 now and I need a bigger cam because of the more cu in.
I am probably going to go with a 232/244 w/.650 lift or some where in that ball park.

Go to my sig to see my combo.

Mean50 · 01-14-2002, 09:35 AM

Alright thanks again for the info man!!!

Rebel79 · 01-14-2002, 11:15 AM

Yes you will have to notch your pistons. And yes "Cam-Zilla" is probably too much cam for you.

Five0 · 01-14-2002, 08:28 PM

He does have aftermarket pistons so I don't know what kind of lift they allow and you have to remember in his first post he has 1.94 1.60 valves. I think it will go, but it might not but defiantly too much cam.

Mean50 · 01-15-2002, 09:28 AM

I will be going to a C-4 with a 3500 stall and a dual stage nitrous kit.
I don't understand why you think that is way too much cam. We are running a cam with around .530 lift and 300 duration in our streetrod. It has flat top pistons with my the stock heads off my mustang ported, torker 289 intake, and a 600 holley. It runs real strong. It is pro-streeted and it will burn those big tires off at Bristol, TN while running a 13.3 @ 101 and 12.1 @ 118 with 150 shot (tire melting).

jonnyk · 01-15-2002, 11:52 AM

He thinks it's too big because....it's too big. You'll have to spin the crap out of a 306 to make use of that cam, and hydraulic rollers don't like going higher than 6500 revs. Keep in mind the street rod probably weights 800-900 pounds LESS than your Mustang, and a bigger cam won't affect it as badly. The Z303 would work much better in a 347.

John · 01-15-2002, 03:37 PM

Nitrous cams have a low 108-111 lobe separation, dunno what the Z is. Why not get a custom ground cam for nitrous if thats what your gonna do. prolly $150 to $250 ballpark figures. At least it will work and be for your combo. When you chang that combo ie. 347 or 408 things change anyway, and you'd have to sell cam anyways. John

Mach 1 · 01-15-2002, 07:18 PM

what are the specs. on the z-cam?

01-10-2002, 06:18 PM	#1
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	Z303, Anyone running it??? My friend is wanting to trade a new Z303 cam to me. I was wondering if I would have to have the pistons fly cut in order to run it. I am running flat top pistons with the Holley aluminum heads with 1.94/1.60 valves. Is this a good cam to run with nitrous? Thanks for the advice! __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-12-2002, 09:09 PM	#2
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	Can anybody help me out please??? __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-12-2002, 09:15 PM	#3
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	I am not a cam expert but I would think that would be a little too much cam for your combination. I do not know how much clearance those pistons will allow but I would think it would clear but you might have problems and the only way to be sure is to check clearance when installing it. I think the x cam would be a better choice but an even better idea would be to call comp cams cam hotline and ask what they recommend. Almost any cam with a split pattern should be a good nitrous cam. __________________ James Cox RHC Member #44 nochevy@hotmail.com 1991 Mustang LX Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more. Engine built by Brent Frazier.

01-13-2002, 04:03 PM	#4
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	Thanks for your input, but it says in my sig that I still have fuel injection on my car, but I just recently changed it over to carb. The carb is a 750 Double Pumper with a Victor Jr. intake!!! I really need to know the answer to question in my first post about my valves and the Z303 cam??? Thanks again __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-13-2002, 05:53 PM	#5
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	I would think it would clear but I don't think anyone is going to be able to tell you for sure. You will have to check your clearance when you get it. I still think it is too big for what you have. __________________ James Cox RHC Member #44 nochevy@hotmail.com 1991 Mustang LX Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more. Engine built by Brent Frazier.

01-13-2002, 07:11 PM	#6
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	Well I plan on doing some porting and eventually getting higher compression pistons or even a 347. I would really like to go to the 408 but right now it isn't in my budget for the extra parts that I would need. __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-13-2002, 07:19 PM	#7
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	James Are you running carb or EFI? __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-13-2002, 07:21 PM	#8
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	For a 347 it might be a good cam but for what you have now you would have to spin the hell out of it. Don't get too carried away with the cam or you will not be getting the most out of your combo. I would still call comp cams and ask what they recommend for what you have and want to do. JMO __________________ James Cox RHC Member #44 nochevy@hotmail.com 1991 Mustang LX Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more. Engine built by Brent Frazier.

01-13-2002, 11:41 PM	#9
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	What size cam are you running your combo? and what exactly is your combo? __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-14-2002, 06:54 AM	#10
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	When I had the 302 I was running a 224/230@.050 w/.544 lift and 112 lobe. I am running a 347 now and I need a bigger cam because of the more cu in. I am probably going to go with a 232/244 w/.650 lift or some where in that ball park. Go to my sig to see my combo. __________________ James Cox RHC Member #44 nochevy@hotmail.com 1991 Mustang LX Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more. Engine built by Brent Frazier.

01-14-2002, 09:35 AM	#11
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	Alright thanks again for the info man!!! __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-14-2002, 11:15 AM	#12
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	Yes you will have to notch your pistons. And yes "Cam-Zilla" is probably too much cam for you. __________________ Scott Halihan, News Editor The MustangWorks Magazine 1994 Supercharged Mustang Cobra Rebel Racing. Home of Bay Area Mustangs

01-14-2002, 08:28 PM	#13
Five0 Registered Member Join Date: Apr 2000 Location: middleburg, fl, usa Posts: 1,134	He does have aftermarket pistons so I don't know what kind of lift they allow and you have to remember in his first post he has 1.94 1.60 valves. I think it will go, but it might not but defiantly too much cam. __________________ James Cox RHC Member #44 nochevy@hotmail.com 1991 Mustang LX Dart iron eagle block, 4340 28oz 347 crank, 4340 h-beam rods, probe ultra light pistons canfield heads “race ported by Brent Frazier”, solid roller cam and lifters “custom grind”, kooks 1 7/8" race headers, and much more. Engine built by Brent Frazier.

01-15-2002, 09:28 AM	#14
Mean50 Registered Member Join Date: Jan 2001 Location: Virginia Posts: 118	I will be going to a C-4 with a 3500 stall and a dual stage nitrous kit. I don't understand why you think that is way too much cam. We are running a cam with around .530 lift and 300 duration in our streetrod. It has flat top pistons with my the stock heads off my mustang ported, torker 289 intake, and a 600 holley. It runs real strong. It is pro-streeted and it will burn those big tires off at Bristol, TN while running a 13.3 @ 101 and 12.1 @ 118 with 150 shot (tire melting). __________________ 89 LX Coupe 306, 10:1 compression, ported 351W heads (2.02-1.60 valves), Victor Jr. intake, 750cfm double pumper, MSD ignition, 1 5/8" full length headers, Flowmaster 2 1/2" American Thunder Cat back system, C-4, 3500 stall, 4.10 gears, 5" Auto Meter Shift Light

01-15-2002, 11:52 AM	#15
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	He thinks it's too big because....it's too big. You'll have to spin the crap out of a 306 to make use of that cam, and hydraulic rollers don't like going higher than 6500 revs. Keep in mind the street rod probably weights 800-900 pounds LESS than your Mustang, and a bigger cam won't affect it as badly. The Z303 would work much better in a 347. __________________ Novi 2000 now spinning off the snout of the 331... Mods Pics

01-15-2002, 03:37 PM	#16
John Registered Member Join Date: Dec 1998 Location: Ft.Myers, FL. Posts: 150	Nitrous cams have a low 108-111 lobe separation, dunno what the Z is. Why not get a custom ground cam for nitrous if thats what your gonna do. prolly $150 to $250 ballpark figures. At least it will work and be for your combo. When you chang that combo ie. 347 or 408 things change anyway, and you'd have to sell cam anyways. John __________________ 89 Notch: 10 pt. cage, d&d rear coil overs, moser 33 plines and spool, gutted 91 Hatch: cobra int. fms. c-springs, novi-1000 w/f-150 crank pulley (9lbs.) 06 F-350 6.0 crew cab lariat srw 4x4: turbo back exhaust, sct xcal.

01-15-2002, 07:18 PM	#17
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	what are the specs. on the z-cam? __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Car running lean, any suggestions?	MATTKNIGHT	Windsor Power	10	03-08-2009 03:52 PM
My friend is Running WAY lean	TMASTER	Windsor Power	5	07-13-2003 09:41 PM
What headunit are you running?	tireburner163	Audio, Security, & Electronics	0	04-22-2003 01:33 AM
Fuel pump will not stop running	MustangGT1990	Windsor Power	7	01-29-2003 10:41 PM
Car's running hot...	Sonics2042	Windsor Power	8	07-16-2002 04:50 PM