Project

Finally it has happened, I sold my DFI, Superram manifold, throttle body, injectors ect ect.

I sent my paxton to paradise wheels to be rebuilt and it was a top notch job!

I don't know what carb I need for my application, or manifold but I'm looking forward to getting this car intune!

Thanks all!

83 Crossfire TA

iTrader: (2)

If I intended to keep things CHEAP and do it all myself I’d snag a used performer carb (basically a carter AFB) and modify that for boost, probably something in the 650cfm range. Otherwise, just buy one of the carb tuner blow through carbs and go from there.

Raiden

Project,

I have the VR4 upgrade kit for sale if your interested.

rcwest32

A blow thru carb should be pretty much sized as if you were running a non boosted engine. A roots style setup (suck thru? Lol) needs to be bigger.

IMO, a Holley boost referenced carb would be the ticket. Eddys and Carters are OK, but I've never seen much luck with them on boosted engines.

83 Crossfire TA

iTrader: (2)

Usually sizing the carb smaller then you would for the NA engine will give a stronger signal at the carb and make it much easier to tune and allow you to do it with something more resembling standard size parts.

stage20

iTrader: (3)

too much of a signal can throw tuning off, requiring smaller jets and different air bleeds due to the strong signal.
small is worse than going too big.

good luck.

83 Crossfire TA

iTrader: (2)

Well, I'm not suggesting that he run a 450cfm carb... but something in the 600-700cfm range will keep a small block happy till around 700-800hp without resorting to any exhotic/odd size parts.

Adamsy87

These CSU Blowthru carbs are the ticket. They come tuned for your application out of the box and ready to go. My buddies got this carb on his blow-thru S-trim SB 427 and it kicks ***.

http://www.superiorairflow.com/carb_...arburetors.htm


Also you will most likely want to run a single plane manifold similar to the Vic Jr. or Weiand X-cellerator.


I know I shouldn't probably be posting on here anymore because I've since got a mustang but I plan on running a Blowthru set-up on that.

sleepybu

Project

Thanks for the help guys- Here is what my current parts list is (If you think I should revise or see anything I'm missing or can think of a hidden cost please post)

750cfm Mighty Demon Annular Barry Grant Blow Through- $542

Air Gap Manifold $155

Aeromotive Regulator PN 13204 $150 (I do not want to change fuel pump)

Hat $208 Polished Aluminum Gasketed Extreme Velocity

Distributor $225 (MSD Not sure which to use yet, but ebay seems to bring 200-250 for various sbc distributors)

New Wires $80 (Not sure yet)

Coil $40 (still unsure)

Timing regulator $300 (MSD Boost controller 1-3 degrees of retard per lb of boost)

Misc $100 (Gaskets and crap)

What I would have done 10 years ago would amaze me, the thirdgen.org amazes me to no end...thanks guys

rocluvr0013

For the record... most people dont care too much that your a mustang guy... mustangs are not my fav. car but if your here to help people or have legitimate questions i could care less what you drive!

And He11 thanks to all those blue oval guys w/o you i probably wouldnt have gotten into modding my camaro b/c id have nothing to compare to!

rocluvr0013

Sorry i hope i didnt jack this thread!

stage20

iTrader: (3)

project-
im not a fan of the demon carb.. but the annular version should be great for you. stay away from downlegs if you can.
the air gap is about the best intake you can put on a motor... but with a blow through, i think that might hurt you in peak HP.
good luck.

sleepybu

why is that

stage20

iTrader: (3)

the annulars help with throttle response greatly, and also atomizes fuel better. they really wont due anything for peak power, but ive seen a few guys be able to tune a wild setup a lil better on the street with the annulars.

sleepybu

i see...

83 Crossfire TA

iTrader: (2)

heh... yea, just keep spending the $$$ on the holley based designs, where the AFB has been sorted out for boost for eons.

Just yesterday I had an original one off of a blown studabaker in my hands, yes, they came with a Paxton blow through setup from the factory.

Project

Anyone recommend a fuel pressure regulator?

Adamsy87

You are gonna want to use a boost referencing fuel pressure regulator. Most guys go with the

- Aeromotive A2000 Carbureted Bypass Regulator, P/N 13202:


Adjustable base pressure from 2 to 20 PSI--recommended for A-2000; P/N 11202 and Belt Drive; P/N 11105 Drag Race fuel pumps. Ideal for use with high volume electric or mechanical fuel pumps of any make, where dynamic flow and rock steady pressure control is desired.

TPIMarow6.6

If im not mistaken he has a F.I. fuel pump. not sure if this reg. will work for him?

Adamsy87

hmm yea im not sure then. If it were me I would just put a sump on the tank and then get a nice pump like the Aeromotive A1000 or the Big Magnaflow Pump. In all I think this is cheap insurance because if you starve that motor of fuel its gonna go bye bye. But yea I'm not sure about using a FI pump on it. I'm guessing it would be ok as long as you using a return style FPR.? Right?

Well I hope i'm helping a little bit.

If theres one place you don't want to skimp in my opinion its the Fuel System. Im gonna do mine with one of those two pumps with a sump and run -10 there and back. Do it right once and then you won't have to worry about it. Thats my philosophy.

Adam

Project

yah I'm going to use return style. I'm worried about if I need to run a huge line to offset soem of the pressure.

My next question is how am I going to hook up my boost gauge

rcwest32

CSU are DA guys when it comes to blow thru applications. They've really done their homework....and actually you WILL see annular discharge boosters on their carbs. No more than a 750 cfm, actually a 650 would do just fine. A smaller carb actually pulls more fuel on the top end and keeps your engine alive!!