ok head questions...

fiveOguy20 · 05-04-2004, 08:12 PM

i just found out that Vic jr's which i was gonna run on my 347 stroker are a lil to agressive for the cam an amount of compression im runnin so now im stuck on what to get

im contemplating the perfromer rpms , X heads, or dart windsor sr. lites. i cant run trickflow cuz i dont have the correct pistons so those are out.

the current combo is : 347, vic. jr. intake, all msd, BBk headers, pullies, X303 cam, crane energizer 1.6 rr's, 10.5 to 1 comp., 650 holley DP..

whatya guys think, need help!

Hozer 88GTConv · 05-04-2004, 09:27 PM

Have you thought about AFR's?
If I didn't have TFS TW heads, that's what I would put in...

420nitro · 05-04-2004, 10:09 PM

AFR 205

tireburner163 · 05-05-2004, 12:03 AM

The Performer RPM heads are just Performer castings with upgraded hardware, so I'd say away from those. The FMS GT-40X heads aren't that great at all either.

IMO, Vic Jr's would be great for your combo. I don't think they would be too agressive at all. I also agree with Nitro, a set of AFR 205's would kick butt too.

I'd pick a cam other than the X-303 there are many more cams out there that would make more power. If you spending this much money on the motor you might as well get a killer cam. And for that killer cam I highly suggest you call up Ed Curtis. Tell him what your combo is and what you want to do with it and I'll custom grind you a cam. It'll be spot on for max power.

-Josh, aka the tireburner

fiveOguy20 · 05-05-2004, 12:28 AM

well the motor is already in the car... i had gt40 aluminums an b cam last season an was runnin 12.5's at 110+.. i called the edelbrock tech line an they said in order to run the vic. jr's u need at least 12:1 comp. an they recommended 600+ lift cam. so it sounds like i wouldnt see the full potential of thos heads an i dont wanna change cams again righ now. alos i forgot to add i'll be sparyin the car this year, but i just wanted to upgrade heads a lil.

tireburner163 · 05-05-2004, 11:30 AM

You don't need that much compression or that much lift.

However a better cam would REALLY help you out, even with the heads you have now. I would highly suggest a cam swap. You can do it with the motor in the car.

Don't waste your money on a set of heads that aren't much better than the heads you have now. I really think you'd only pick up a few tenths by switching to Performer RPM's.

Swap in a good cam and throw on those Vic Jr's.

-Josh, aka the tireburner

05-04-2004, 08:12 PM	#1
fiveOguy20 Registered Member Join Date: Sep 2002 Posts: 156	ok head questions... i just found out that Vic jr's which i was gonna run on my 347 stroker are a lil to agressive for the cam an amount of compression im runnin so now im stuck on what to get im contemplating the perfromer rpms , X heads, or dart windsor sr. lites. i cant run trickflow cuz i dont have the correct pistons so those are out. the current combo is : 347, vic. jr. intake, all msd, BBk headers, pullies, X303 cam, crane energizer 1.6 rr's, 10.5 to 1 comp., 650 holley DP.. whatya guys think, need help!

05-04-2004, 09:27 PM	#2
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	AFR's Have you thought about AFR's? If I didn't have TFS TW heads, that's what I would put in... __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

05-05-2004, 12:03 AM	#4
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	The Performer RPM heads are just Performer castings with upgraded hardware, so I'd say away from those. The FMS GT-40X heads aren't that great at all either. IMO, Vic Jr's would be great for your combo. I don't think they would be too agressive at all. I also agree with Nitro, a set of AFR 205's would kick butt too. I'd pick a cam other than the X-303 there are many more cams out there that would make more power. If you spending this much money on the motor you might as well get a killer cam. And for that killer cam I highly suggest you call up Ed Curtis. Tell him what your combo is and what you want to do with it and I'll custom grind you a cam. It'll be spot on for max power. -Josh, aka the tireburner __________________ 1987 Buick T-type 1998 HD Electra Elide

05-05-2004, 11:30 AM	#6
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	You don't need that much compression or that much lift. However a better cam would REALLY help you out, even with the heads you have now. I would highly suggest a cam swap. You can do it with the motor in the car. Don't waste your money on a set of heads that aren't much better than the heads you have now. I really think you'd only pick up a few tenths by switching to Performer RPM's. Swap in a good cam and throw on those Vic Jr's. -Josh, aka the tireburner __________________ 1987 Buick T-type 1998 HD Electra Elide

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05-04-2004, 10:09 PM	#3
420nitro Registered Member Join Date: Nov 2003 Location: Rockford Posts: 596	AFR 205

05-05-2004, 12:28 AM	#5
fiveOguy20 Registered Member Join Date: Sep 2002 Posts: 156	well the motor is already in the car... i had gt40 aluminums an b cam last season an was runnin 12.5's at 110+.. i called the edelbrock tech line an they said in order to run the vic. jr's u need at least 12:1 comp. an they recommended 600+ lift cam. so it sounds like i wouldnt see the full potential of thos heads an i dont wanna change cams again righ now. alos i forgot to add i'll be sparyin the car this year, but i just wanted to upgrade heads a lil.