Wondering if anyone here has been running a FST carburetor recently. I've looked at a couple of forums on line, and seen mixed reviews on how well they work. It seems that the older reviews were more negative, where the newer reviews were more positive.

The carb I'm considering is an FST 750 cfm, mechanical secondary, no choke, RT-X, #42750 XB.

My car is an SBC, low 12 - high 11 sec. Monte w/hyd. flat tappet cam and an old Demon 750 curently in place.
Any input/experience/advice w/these carbs would be greatly appreciated.

In my opinion there are too many reputable carb builders out there to go with something less known. I’ve ran: APD, Rupert, pro systems, and Ron’s injection and never had a problem from any of them or their service

BLP, Book, stinnet, Williams, etc

I’m sure I’m leaving out reputable builders, but these are a few

This message has been edited. Last edited by: racerdude2054,

If you can get one...back ordered till dec. Summit. Yes they are good. I know the design engineer well and work with him. Can’t get direct either...
Friend ready to dyno , waiting for one..

Just the latest player for the street/strip crowd and low buck/low power occasional bracket racer.

There are far better choices from proven race carb builders for serious bracket and class recers.

quote:

Originally posted by bubbletop:
Wondering if anyone here has been running a FST carburetor recently. I've looked at a couple of forums on line, and seen mixed reviews on how well they work. It seems that the older reviews were more negative, where the newer reviews were more positive.

The carb I'm considering is an FST 750 cfm, mechanical secondary, no choke, RT-X, #42750 XB.

My car is an SBC, low 12 - high 11 sec. Monte w/hyd. flat tappet cam and an old Demon 750 curently in place.
Any input/experience/advice w/these carbs would be greatly appreciated.

For the level of performance you're talking, I'm fairly certain there is no better than a BDQ Quickfuel - Holley. These aren't mass produced like a Brawler. I was impressed by the BDQ out of the box.

Barely hit the key stoned cold, it was running and idling on its own.

For a little more than a BDQ, you can get a custom BLP. Even better yet.

Find a retailer with old stock - price, Summit will price match.

I got this BDQ for $850 delivered, I think they're $1175 now.

I'd have bought a BLP if it weren't for the price match.

There won't be old stock around forever though.

Floor it!

The design engineer at FST did design at QF also. Left when Holley bought them. Everyone poo poo’d QF for years. We run fast with them and we win with them. The good guys all left and started building / working with other builders.

The decades of design and engineering behind Quick Fuel is now ATM Innovations and who we’ve been using for the past 2 seasons. They can certainly build a carb for the OP’s street/strip car.

Absolutely!

I'll always be BLP, they've been good to me.

Money is tight, I had to do, what I had to do this time.

BDQ is top shelf, compared that brawler I had! LoL!

The bowl screws were torqued to 50ft lbs on the brawler, I think. Some china men or a machine put that thing together!

Seriously though, good to know because Ilike the BDQ - Holley.

It's hard to comprehend apparently that you were asking for people's experiences with a certain carb not for other recommendations.

I always see FST sponsoring some of the big money races and can't say I've ever run one, but they certainly look like a nice piece. It would be nice to see other people's experience who have run them.

quote:

Originally posted by NC3x58:
It's hard to comprehend apparently that you were asking for people's experiences with a certain carb not for other recommendations.

I always see FST sponsoring some of the big money races and can't say I've ever run one, but they certainly look like a nice piece. It would be nice to see other people's experience who have run them.

Fair enough, he could always find a retailer with FST old stock - price, and get a price match with Summit, if they carry FST.

If I were in the market for a FST, my first question is where they made? If they're made inside the United States of America, that's a plus when it comes to value.

quote:

Originally posted by NC3x58:
It's hard to comprehend apparently that you were asking for people's experiences with a certain carb not for other recommendations.

Not hard at all but the fact is as I said, it’s a blinged up carb whose market is the street/strip crowd which there are few if any here. It is not a carb you’re going to find on a serious effort bracket car or class carb. Too many race carb builders out there with proven results. If he’s adamant he wants an FST carb doesn’t matter what anyone says, he’s going to buy one.

I wouldn't waste the money just to go from one 750 to another. If you haven't done any fine tuning of what you have, you could send it to a builder of your choice and be better off and cheaper than an out of the box carb from either FST or ATM. Either of the latter will require the same tuning as what you have now and I would doubt you would see any measurable difference.

I'm not downing FST or ATM.

quote:

Originally posted by CURTIS REED:
I wouldn't waste the money just to go from one 750 to another... I would doubt you would see any measurable difference.

I'm with Curtis on this one. Why drop close to a grand for little or no gain?
Also, if your SBC is capable of pushing a heavy car into the 11's, it probably has enough potential in the heads, intake & cam to consider going to an 850. Best bet, find a buddy who will let you borrow his 850 for a couple of time shots. Basically a quick and easy bolt-on, (fuel inlet spacing is different though, so a one-piece hard line or non-adjustable fuel log won't go from a 750 to 850). And if you have a mechanical fuel pump, a double-pumper 850 may be pushing it's ability to supply adequate fuel volume. You'll find that out if it wants to lay down on the big end.

Have a good carb shop rebuild the Demon, money better spent. The FST parts are OK but assembly and calibration is poor. Braswell or ATM has the best castings.