fast89stang

iTrader: (2)

6.0, l92 heads, custom fti cam, 4.30 gears, 5500 stall turbo 350. I shift right at 7k. I have a vic jr, with a 950 ultra hp. 96 jets front and rear with 50cc pump in front. Got a well known LS engine builder says I am killing it with this carb. 950 wont move enough air. Says I need a Dominator. Whats ya'lls opinion on this? Would a dominator pick it up? My buddy says it will slow it down.

ATwelveSec02Z28

iTrader: (17)

you will pick up with a Mast intake and dominator.

dogsballs

Too big already, dominator will kill it.

I'm running a similar 6.0 on e85, got 5200 convertor peak 7200. Running a modified 850 holley body that flows 950 and running 95/107 jets.

Whats the go with square jets? Need to adjust your primary air bleeds and pvcrs, then drop jet and actually use your power valve

speedtigger

iTrader: (16)

Actually, he is making extraordinary power for his cam size the RPM range. He is making about 30 more horse than you are:

dogsballs
#2750 Raceweight 10.08@134
Horsepower(drag race calculator): 516 - 7200 Shift

Fast89stang
Raceweight 2965 6.34@107
Horsepower(drag race calculator): 544 - 7000 shift.

I would say Fast89stang is about one of the best sorted out combos on here. I would be inclined to listen to ATwelveSec02Z28, he has worked his way up and knows.

VLS1

What size tyre you running with that 4.30 gearing?

Just get a dominator victor intake, and run some 9 second passes! Hope you don't run out of rear gear though, with the way your converter should be working you'd probably get away with 3.9 or 4.1 gear easily. But then again a large intake might see you through to 7500 provided the cam will get up there okay.

dogsballs

I ran 10.000@135.5 1.45 60ft, more in it with tuning at track, but os for a bit

Still think it will be too much air, happy to be proven wrong. Keen to see a ls3 super vic on there or bigger manifold

Cams specs??

VLS1

fast89stang already has the 60ft and half track good for 9.80's as it stands, easily.

3pedals

iTrader: (3)

Look close at the specs for your Holley 950HP carb, 1.376 venturi, 1.75 thottle bore.
It is MUCH more restrictive than an 850 Mighty Demon 1.562 venturi, 1.75 throttle bore.
Even a 750 Mighty Demon has a larger venturi size at 1.400!
Holley REALLY **** the bed when they called that carb a 950, it is nothing more than a 750, with an 850 base plate.

My opinion is get you an 850 Mighty Demon, since I love those carbs, but if you are a die hard Holley guy, than a 1000HP is near identical specs to the Demon. There are also other 4150 sized carbs that can honestly flow more than the 2 I mention as well. then maybe add a spacer to get some plenum volume under it and your set.

VLS1

Look closely at ultra HP specs and you'll find it has a 1.62" venturi, the intake manifold would be the main advantage of swapping to a dominator in this situation.

dogsballs

I run 2" of spacers on my vic jnr

The ls3 super comes in both 4150 and 4500 pattern

speedtigger

iTrader: (16)

Yep. The Ultras are a whole different animal and that is the same as I have read about the Domi swaps. The intake was the difference.

fast89stang

iTrader: (2)

Thanks guys for the replies. Only reason I ask about a dominator is mike Lough (who built van Burgess 275 cars engine) says my 950 is too small. Yeti on the bullet says he bets I pick up at least 2 tenths with dominator. But I don't know. Mine has been good, but mike says he don't see how it runs this good.

fast89stang

iTrader: (2)

Cam card at work but something like 600-622, 238-243 dur? But can't remember for sure. 111plus 3 I think. I think vls1 remembers my specs better than me.

fast89stang

iTrader: (2)

Oh and my tires are 275 60. 28 inch tall. It would take more rpm. I think I can shift at 75 if I wasn't scared.

speedtigger

iTrader: (16)

Fast89stang 231/243 111+3 Square Port unported Milled -.020" 9.94:1
IVO is 7.5 ° BTDC ( - indicates ATDC)
IVC is 43.5 ° ABDC
EVO is 55.5 ° ATDC ( - indicates BTDC)
EVC is 7.5 ° BBDC
Overlap is 15 °

streetrod56

I have a Mast intake and a sv1 1120 carb for sale.

ATwelveSec02Z28

iTrader: (17)

Im sure you can get a good custom 4150 carb that can pick up some....


But the Vic Jr is an issue. I know there are Super Victors out now, but the Mast intake is fully ported and might as well get it for a 4500.

VLS1

Yep as speedtigger responded 231/243 111+3 which I'm not sure will be enough cam for a larger intake. Only one way to find out really.

Oh and yeah, worked with numbers most of my life, remembering cam specs is easier than family birthdays for me!

fast89stang

iTrader: (2)

Well I got a dominator to try with adapter to 4150. Teri seems to say 2 tenths faster easy. But this is a borrowed dominator, so don't want to change it much

speedtigger

iTrader: (16)

lol..