Posi is dead on target. The Dragon TB is impressive! Here are some pictures comparing it to another SBTB. The pictures speak for themselves -I have seen all three of the big players tb's now and the Dragon's by far seem the best. ... All I can say is if I was looking for a sbtb for an Eaton then there would be no question on buying a Dragon over the others. ...
Hey Posi,I have seen all three of the big players tb's now and the Dragon's by far seem the best. Let alone bring price into play and they win for that also. Made with high quality and are gigantic to say the least. I wish I could give you some before and after numbers on a high boost Eaton car but I can't yet. I sold one the other day and I'll assume the guy will have some type of data before to long. All I can say is if I was looking for a sbtb for an Eaton then there would be no question on buying a Dragon over the others.
Eric Brooks just saw one so maybe he'll chime in on what he thinks about them.
Only My Opinion, Any After Market Single Blade Throttle Body And Matching Plenum Is Worth The Money, Ported Or Not. If We Look At Just The 15-20rwhp, It Does Not Seem So (maybe To Some). But Look At 1,500 Rpm To Redline. It May Have A Spot Of 30-50 Hp Difference. More So With The Ported,upper, Lower Pulley Combos. It Really Shines Everywhere. For Maybe 500 Bucks To Have That Good Throttle Feel And Power Is Worth It To Me. Plus, I Love The Faster Ramping Of The Accufab. Secondly, The Tb Flow On Stock Is Like 900 Or So. The Accufab Is Like 1,700.hope This Isn't Stepping On Anyone's Toes But From The Sh And Richard Holdener Books They Both Say That The Tb Is Not A Restriction For The Eaton. From There You Have To Figure Is The Money You Spend On A Tb Really Worth It If You Stay With The Eaton, Ported Or Not.
Nitrous Cobra,Posi, Can We Bolt This Upto A Whipple? Of Is It Just For The Eaton With Plenum.
You make a perfectly good point. I think with 500hp or right around it you can easily get by with a ported stocker (950cfm's). After that you'll see some big gains with a sbtb. Then if you're going to get a sbtb why not get the Dragon? It's larger, built to high standards, and it's the cheapest to boot. Just the tip-in throttle response will make it worth it. You floor it and the car goes.Hope this isn't stepping on anyone's toes but from the SH and Richard Holdener books they both say that the TB is not a restriction for the Eaton. From there you have to figure is the money you spend on a TB really worth it if you stay with the Eaton, ported or not.
I PLUGGED UP ALL BUT ONE ( VACUUM) HOLE IN THE BACK OF MY 3.4L WHIPPLE. THERE ARE MANY PLACES TO HOOK UP THE IAC, WITHOUT SEEING IT. YAH, I WOULD LIKE TO TRY A DRAGON, HAVE MY ACCUFAB UP FOR SALE ALREADY. P.S. HERE IS THE RIGHT ADAPTER. THIS MOUNTS TO THE IAC AND YOU CAN PUT WHERE EVER YOU WANT TOO.Nitrous Cobra,
You can. There is some massaging required. Because the throttle bore is so much larger than the other commercial SBTBs there is some metal that needs to be removed from the Whipple blower inlet. When you look at the two different gaskets in my earlier post you can easily see the amount of removal required.
Because of where the IAC is from Whipple (and Ford) and the size of the throttle blade you will end up cutting into the interior of the Whipple IAC passage. The solution is to either put a block off plate on top of the Whipple blower throttle body inlet housing or weld up the interior. I don't think one or the other has a measurable advantage over the other.
Without the stock IAC passage you either have to use the Dragon Throttle Body 600-6 with the IAC boss on the underside or else use Dragon Throttle Body 600-2 without any IAC boss. If you use the -2 throttle body then you still have to make provisions to hook up the IAC.
You know this next part. Not everybody else does so I am including it to be complete.
The IAC is essentially just a computer controlled air leak to accommodate idle air requirements at certain points in the engine warm up and normal operating modes. Because all it needs is access to pre blower/post throttle vacuum and atmospheric pressure a simple block of aluminum with two holes corresponding in size and location to those already in the IAC motor is all you need. Screw the IAC to the block and plumb the low pressure side back to a vacuum source after the throttle blade and before the rotors. Leave the second hole open to the atmosphere.
Pick an aesthetically pleasing location to fasten the aluminum adapter block you just made and its IAC and you are done.
My personal preference is the 600-2 because while I need the IAC I don't necessarily like they way it looks in the engine compartment. I would rather have it but have it out of sight.
If you are concerned about foreign particle contamination (dirt and junk) entering the blower, then plumb the atmospheric reference hole to the intake after the airfilter and before the throttle blade, and you are done one again.
NitrousI PLUGGED UP ALL BUT ONE ( VACUUM) HOLE IN THE BACK OF MY 3.4L WHIPPLE. THERE ARE MANY PLACES TO HOOK UP THE IAC, WITHOUT SEEING IT. YAH, I WOULD LIKE TO TRY A DRAGON, HAVE MY ACCUFAB UP FOR SALE ALREADY. P.S. HERE IS THE RIGHT ADAPTER. THIS MOUNTS TO THE IAC AND YOU CAN PUT WHERE EVER YOU WANT TOO.