Whats the most boost you can make with a Roe?

[Nates GTS Viper]

I was just wondering what's the most boost you can make with a Roe. I have a 96 GTS and have seen people run 10 pounds and the turbo and paxton guys run even more psi. I know there completely different systems and work different but I am looking at all my options for more power and was just curious about this. Also how much power can a 96 GTS handle without reliability issues. Thanks

 

[Mccarlin]

I have heard of a 12lb pulley for the Roe out there. I think that's the highest i've heard of someone running. I think it's a david weaver pulley or something like that.

 

[martyb]

12# Roe pulley along with the weaver underdrive pulley I think, although that is pushing it with the max rpm of the blower itself.

 

[99 R/T 10]

Correct, the DW pulley is bolted to the crank to spin a littel faster. Then add a 12lbs pulley should push to 14lbs, but at 6000 RPM you are near the limits of the S/C. If you don't have a great set of flowing heads, going that high of boost would be a waste of time.

 

[RTTTTed]

I wouldn't recommend running more than 10#psi without changing pistons to lower compression forged. Also might think about changing the maincaps for Billet caps, etc. etc.

Ted

 

[GTSnake]

I've got a David Weaver underdrive pulley for sale if anyone is interested.

 

[RedEnuf93]

Mine was run at 12lbs and juice before I bought it.

With Paxton you will definately make more HP, if thats what you are asking....

 

[Nates GTS Viper]

is it a dumb question to ask if a paxton will make more power with the same amount of boost and why? thanks again for all the help. also as for heads are the roe heads as good as the blower or should i look into other options.

 

[99 R/T 10]

There are too many varibles(W/M, Heads, Headers, catback), but my "opinion" is that a 8lbs vs. 8lbs, the Roe will have more power(especially TQ) under the curver, but the Paxton will top out with more power at 5000RPM and higher.

 

[RedEnuf93]

I dont know many Roe's packing over 800HP, but there are lots of Paxton's in that area.

I understood:

I was just wondering what's the most boost you can make with a Roe.

that someone is after HIGH HP, not lbs/lbs comparison.

Paxton makes the power higher on the RPM range, Roe pulls max TQ and HP quite low. That was my reson to get Roe, drivability (not ultimate HP)

 

[plumcrazy]

if they're the same as they used to be, the roe heads are not that great. look into talking to greg good for head work.

713-290-1103

 

[Nates GTS Viper]

thanks again everyone for the info. on another note, with the roe making more power and torque downlow than the paxton would that make it faster than a paxton with the same horsepower numbers. so if both made say 700 whp what would the race be like on the track and on the street and how does heat sok affect the roe compared to the paxton. also in a straight line o the street could my gts with a roe and say 650-700 whp put a beating on the zr1. i really would like to stay on top of the food chain if at all possible.

 

[Burntrubber]

with a 12# you need alot of W/M, just better off having an intercooler at that point(which isnt available).
with an effective tune and a 12# pulley your street tires are basically useless.

 

[plumcrazy]

650-700rwhp is FAR from the top of the food chain

 

[2MANYTOYS]

thanks again everyone for the info. on another note, with the roe making more power and torque downlow than the paxton would that make it faster than a paxton with the same horsepower numbers. so if both made say 700 whp what would the race be like on the track and on the street and how does heat sok affect the roe compared to the paxton. also in a straight line o the street could my gts with a roe and say 650-700 whp put a beating on the zr1. i really would like to stay on top of the food chain if at all possible.

Get someone with a Underground Racing paxton car to give you a ride. Depending on the build you will make 800-1000 whp.

 

[treesnake]

I have a 12# Roe blower pulley, with a Weaver crank pulley puts me at 14#. A Greg Good ported Roe blower intake. PBJ ported the blower also. Going through Stryker heads into a brand new Arrow Racing engine. I am using water/ **** injection and a custom CO2 "Intercooler". For some additional "cooling" I have a two stage NOS system.

Wish I could tell you the numbers but I am in ther process of trying to get the car tuned. Talked to David Weaver at ART and I am making arrangements to get that done...soon. Hoping for big numbers.

The key to running higher boost is to make sure the bottom half of your engine can take it. On a stock engine (forged) I think 8-10# is max.IMO

But like some of the "veterans" above have stated, there are a lot of variables.

 

[99 R/T 10]

Treesnake, post up when you get some numbers, I bet they will be huge as far as a Roe goes.

 

[treesnake]

Treesnake, post up when you get some numbers, I bet they will be huge as far as a Roe goes.

I will. A tuning "issue" has delayed the final numbers.

 

[Nates GTS Viper]

I do know 700 whp is far from the top of the food chane but I just meant between my Viper and corvettes. Again thanks everyone for all your input and maybe ill get to hitch a ride with someone at the corvette vs viper horsepower challenge in richmond on the 20th.

 

[alpine7822]

I know there should be about 2-3 1000+rwhp cars there next weekend. I'm sure any one of them would be glad to give you a demonstration.

 

[Red Snake]

Nate, if you are running a stock motor 8# would be your limit with a stock fuel system.

If you upgrade the stock fuel system you can safely run 10# on the stock motor with water/**** (my current set up which makes 660rwhp/710rwtrq).

While there are some 12# pulleys available, I wouldn't run it on a stock motor and I wouldn't run it without an intercooler. The Roe unit generates a tremendous amount of heat with the 12# pulley and you don't see the benefit of the additional 2 pounds of boost (10 to 12) without the intercooler.


So I guess the short answer is 10# with water/**** unless you are intercooling.



Oh, and I'm not skeered of any ZR-1 with my 10# setup.

 

[treesnake]

Oh, and I'm not skeered of any ZR-1 with my 10# setup.

Sounds like you got your 10# pulley on and your ready for Bradenton, huh?

 

[Red Snake]

Sounds like you got your 10# pulley on and your ready for Bradenton, huh?

Yep. I have a race set up with a stock block paxton on 10-12 pounds of boost. Should be a blast and a good race.

 

[plumcrazy]

you might also have a trip to mexico at night with a DLM paxton car....

 

[SquadX]

thanks again everyone for the info. on another note, with the roe making more power and torque downlow than the paxton would that make it faster than a paxton with the same horsepower numbers. so if both made say 700 whp what would the race be like on the track and on the street and how does heat sok affect the roe compared to the paxton. also in a straight line o the street could my gts with a roe and say 650-700 whp put a beating on the zr1. i really would like to stay on top of the food chain if at all possible.

I am interested in ths as well. If you have two cars, one running a Roe and the other a Paxton and both dyno, lets say, 650 rwhp, which will be the faster of the two in the 1/4, 30-120 ish and overall top end speed. Assuming both got traction, same tires, both equal drivers.

I would assume the Roe would jump out on the Paxton and keep that lead until the Paxton got up in the 5000k range were it would have a higher output. Just a thought but would like to hear real world experience.

 

[martyb]

treesnake,

I am anxious to see those numbers!! I hope you get the tune done soon.

martyb

 

[Nates GTS Viper]

I would love to see those numbers as well but would really like to see some races. I searched but can't find any roe vs paxton vids anywhere. Also with the base bolt on paxton and a roe blower at 10psi and w-m who would win in an 1/8th mile race. Also what's the price difference for the base paxton vs the roe.
When you guys go to that closed course make sure you bring along someone who knows how to use a video recorder whether its at brandenton or mexico.

 

[Burntrubber]

My suggestion would be to drive a Roe car! I had problems with my BAP so I couldn't run my 10# pulley. So this weekend I am going to take the BAP off and put on a 5# pulley. YOu can basically take a stock car and put on the Roe with a 5# pulley. If you want to go 10# you are going to need headers and exhaust, fuel system upgrade (injectors, lines, fuel pump), water/****, and a few other small items down the road...like half shafts and such, maybe larger airbox and throttle bodies. some 1.7 RR to give it some more effiency. I took my stock 96 and went to a 10# roe with all those goodies (excluding TB's & RR's). So now I am just saving up to buy Fuel system, RR and such; but I do get the ability to drive my car with 5#s of boost.
I consider this a blessing because I drive my car hard, and with a 10#'er I would break something!!!

 

[FLX109]

I was just wondering what's the most boost you can make with a Roe. I have a 96 GTS and have seen people run 10 pounds and the turbo and paxton guys run even more psi. I know there completely different systems and work different but I am looking at all my options for more power and was just curious about this. Also how much power can a 96 GTS handle without reliability issues. Thanks

I am running a 12# pulley with a Roe system and I am getting 666RWHP, I have Corsa side exhaust water/methanol inj with a stock engine and runs great.

FLX109

 

[99 R/T 10]

I am running a 12# pulley with a Roe system and I am getting 666RWHP, I have Corsa side exhaust water/methanol inj with a stock engine and runs great.

FLX109

oooooooh, that's an evil MFer, ain't it