• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Whats the latest on the Victor mw head combos out there?

No Trans Brake right, just foot?
Do you think retarding the ignition slightly in high gear would help?

I haven't worked on the tune since I switched to the Hughes Ported heads from the regular MW heads with just mild hand porting, not making the ports much larger.
With the smaller heads and slightly smaller cam, the car was slightly quicker, but I think the larger heads and cam may be making more power, but my near stock suspension can't plant the power.
just foot brake, interesting it liked the smaller ports. I might pull the indy intake and try a trick flow.
 
just foot brake,
Ahh, I didnt realize this. Sounds like you are doing pretty well already, but I'd look at what if anything you can sacrifice to lighten the car and improve transfer (without ruining a street car appeal). And still go to the square manifold with the dominator adapter. HTH, Lefty71
 
I am curious how a larger carb would be on my car, but I like the drivability of the FiTech 1200. I think it is only around 800 cfm?
That and I haven't been to the track in two years, so it's not a big deal.
 
No way the fan killed .25 ET & 3mph. Was the weather close? I'd look at the converter. That mph should easily go .30 quicker (either day). What does the rpm fall back to on the shift? If it's truly 5100 rpm. it's way tight. Gear would help also.
Doug
Mech fan and water pump can eat up around 30 hp due to parasitic drag. The 511 might not accelerate as fast as the 408 because of the rotating mass. A smaller cam might increase midrange torque and make make up for lazy. Just my opinion.
 
I'll have to look at the in car video again when I'm not at work, but car seemed to move really good in 1st and 2nd, but 3rd I think it sounded a bit different. Might double check the O2 readings there too and see if it is going lean?. That is why I mentioned the high speed retard, but might also check if the fuel pump is keeping up with the demands?
 
I have a 511 11:1 using the victors cnc'd by Hughes at 330cc and flow [email protected],.700 and a SFT cam 270/276@50 using 1.6/1.5 rocker combo giving me .644/.615 lift on a 110 lobe sep.
I use the Indy 400-3 and a 1100 Dominator by Thumper carbs.
This is in an a body 3380# race weight. 8" 5100 vert by Ultimate with a 727rmvb. A dana with 4.10 gears and 28" M/T ET R radials.
Water pump and fan is belts driven. Best time with electric fans was 10.40@130 and with flex fan 10.66@127. Does this sound reasonable for this street combo? Seens slow to me as my pump gas 408 was faster.
couple other things, headers are 2" Maddogs and I use Caltracs with monos.
Best 60 was 1.45. Best path to 10 o's or aleast low 10's?
Duration of cam? With flow numbers like that correct cam is everything. More gear would up torque in the twist. Might be a little lean on top pulling all that air.
 
I'll have to look at the in car video again when I'm not at work, but car seemed to move really good in 1st and 2nd, but 3rd I think it sounded a bit different. Might double check the O2 readings there too and see if it is going lean?. That is why I mentioned the high speed retard, but might also check if the fuel pump is keeping up with the demands?
No retard in the box. The weekend before car ran rich till the cooler weather rolled in that night. Best time was run with a 13.0 afr
 
Duration of cam? With flow numbers like that correct cam is everything. More gear would up torque in the twist. Might be a little lean on top pulling all that air.
270@50, I think a new 9" vert is in my future. Something about 5500 flash.
 
270@50, I think a new 9" vert is in my future. Something about 5500 flash.
270 is your lift at .050 I'm guessing which is about right for a svt. Duration is what's makes power. Especially with over 500 ci. Good cam for your combo would be around 300 adv give or take with a mid 260 @ .050 lift. Those heads wants the valves to be open longer. I could be wrong. My wife says I am all the time.
 
Again, the vert is tight and feels tight when I foot brake it. Hard to get much over 2700rpm. What works best behind a big block, a 8" or a 9" and why?
 
Best time with electric fans was 10.40@130 and with flex
Not that wallace calculators are perfect but they are generally pretty close. Based on 130mph
60 Foot 1.42
330 Foot 4.09
660 Foot 6.43
660 MPH 105.69
1000 Foot 8.46
1/4 Mile ET 10.19
1/4 Mile MPH 130
10.0 will require more power or less weight. I'd contact Malex and copy his Victor build.
Doug
 
Again, the vert is tight and feels tight when I foot brake it. Hard to get much over 2700rpm. What works best behind a big block, a 8" or a 9" and why?
Do you run straight mechanical timing with your dist locked out and a timing comp? Where does your timing come in? A 8 inch converter usually stalls around 5000 rpm. Helps to know where and when i the rpm range your car makes peak hp and torque to dial in your launch. Smaller converter allows the engine to rev into optimal rpm for launch. A two step and brake would be good. Your heads flow for 9s. Your cam and comp determines how the heads make power at a given rpm.
 
Not that wallace calculators are perfect but they are generally pretty close. Based on 130mph
60 Foot 1.42
330 Foot 4.09
660 Foot 6.43
660 MPH 105.69
1000 Foot 8.46
1/4 Mile ET 10.19
1/4 Mile MPH 130
10.0 will require more power or less weight. I'd contact Malex and copy his Victor build.
Doug
Thanks DVW. Good to know it has the capability. I talked to someone today that said the Roadrunner has been a track champion along time(like 30 or 40yrs) and is well figured out. That same engine in my car would not run a 9.70. I will keep the recipe just for reference thou. It seems I need to check my valve springs just to be sure their keeping everything in check. Lenny said $125 to reset my 8" vert, so I need to find out whats best for my app. a 8" or a 9" vert.
 
Do you run straight mechanical timing with your dist locked out and a timing comp? Where does your timing come in? A 8 inch converter usually stalls around 5000 rpm. Helps to know where and when i the rpm range your car makes peak hp and torque to dial in your launch. Smaller converter allows the engine to rev into optimal rpm for launch. A two step and brake would be good. Your heads flow for 9s. Your cam and comp determines how the heads make power at a given rpm.
I have a very short curve. Intitial is 30* total is 36* all in by 2500rpm. Dwayne Porter tells me the max torque should be about 52-5300 and peak hp should be about 65-6600. He dynos a lot of engines.
 
270 is your lift at .050 I'm guessing which is about right for a svt. Duration is what's makes power. Especially with over 500 ci. Good cam for your combo would be around 300 adv give or take with a mid 260 @ .050 lift. Those heads wants the valves to be open longer. I could be wrong. My wife says I am all the time.
the advertised duration is 302/308 270/276@50.
 
I have a very short curve. Intitial is 30* total is 36* all in by 2500rpm. Dwayne Porter tells me the max torque should be about 52-5300 and peak hp should be about 65-6600. He dynos a lot of engines.
8 inch converter. Will be plenty Louise IMO. Launch at around 3500. Still think cam and timing are holding you back with those heads. Lots of speed left.
 
the advertised duration is 302/308 270/276@50.
Yep. I like it. A little less lift @.050 would improve midrange torque in my experience but your real close. Small changes in lift can make 50 lbs of torque at midrange rpm.
 
Also. Mopars like a single pattern cam on a 108.
Over on another site a member listed the recipe to the engine these victors came off of. A 511 with a small roller with .620 lift and bracket duration he says. 13:1 with a super vic intake and 1050. Ran 9.70 in a well sorted 69 Roadrunner at 3500#.
 
Over on another site a member listed the recipe to the engine these victors came off of. A 511 with a small roller with .620 lift and bracket duration he says. 13:1 with a super vic intake and 1050. Ran 9.70 in a well sorted 69 Roadrunner at 3500#.
I d have to see those time slips. At that weight, small cam, 511??????. Pretty lofty goal. I know a few that dynoed close to 900 that run not much quicker. It would take close to 775hp uncorrected to get there. Probably looking at 825 off the dyno minimum.
Doug
 
Auto Transport Service
Back
Top