FAST 102 - What Do I Need?
06-29-2012, 08:21 AM
#1
FAST 102 - What Do I Need? Ok, so I've read lots of conflicting threads about what is needed to put a FAST 102 on a F-body LS1 so I only want to hear from people who absolutely know and have done it.
Which Injectors work?
-- I have a set of GTP Injectors, what would I need to make these work?
Do Fuel Rails have to be changed? If so, which ones work and which are cheapest? Do LS2 rails work?
What size TB is best? Does a 102 hit the water pump?
Which Injectors work?
-- I have a set of GTP Injectors, what would I need to make these work?
Do Fuel Rails have to be changed? If so, which ones work and which are cheapest? Do LS2 rails work?
What size TB is best? Does a 102 hit the water pump?
06-29-2012, 10:17 AM
#2
FAST 102:
ls2/3 rails
Your injectors will work but you will need injector adaptors, call Fuel injector connection (FIC)
Go with a 92mm TB. They are plenty and WAY easier to tune. With the 102 I've heard of issues hitting the water pump but that's an easy fix. Either way get a 92mm
ls2/3 rails
Your injectors will work but you will need injector adaptors, call Fuel injector connection (FIC)
Go with a 92mm TB. They are plenty and WAY easier to tune. With the 102 I've heard of issues hitting the water pump but that's an easy fix. Either way get a 92mm
06-29-2012, 01:28 PM
#3
^^^^ Up Top ^^^^ Seen it first hand with a 102/102 throttle body on a bolt on 346. Without a tune it would fall on its face off idle to about 4k, scream above 4k though. Swapped my 92mm on it and it was way better. Of course once the car got a proper tune it was sweet all around.
06-29-2012, 07:13 PM
#4
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Ok, so I've read lots of conflicting threads about what is needed to put a FAST 102 on a F-body LS1 so I only want to hear from people who absolutely know and have done it.
Which Injectors work?
-- I have a set of GTP Injectors, what would I need to make these work?
Do Fuel Rails have to be changed? If so, which ones work and which are cheapest? Do LS2 rails work?
What size TB is best? Does a 102 hit the water pump?
Which Injectors work?
-- I have a set of GTP Injectors, what would I need to make these work?
Do Fuel Rails have to be changed? If so, which ones work and which are cheapest? Do LS2 rails work?
What size TB is best? Does a 102 hit the water pump?
Throttle body you can use a 92 or 102, the 92 mm will be easier to tune, there wont be any real horse power different between the two unless your going bigger cubes or forced induction. as far as the water pump the 102 intake hits ever so slightly, its the throttle body that really hits it you will have to grind the water pump a little not really that difficult just have a good grinder. if you dont want to grind the pump many people have said the ls2 style water pump will work with out having to grind but i have no first hand knowledge of this.
lastly when its all said and done you will need to get a tune done.
06-29-2012, 09:56 PM
#5
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Gtp injectors will work. That's exactly what I'm using on my 102 setup with the fast rails but definatly need to use the o-rings that fast provides. I'm using a fast 102 throttle body but it's not on the car yet so I can't tell you for sure if it hits the water pump but judging by what iv read its gonna. You also are probably going to need the fast crossover lines that hook up to the stock fuel lines to the rails.
07-02-2012, 07:23 AM
#7
Gtp injectors will work. That's exactly what I'm using on my 102 setup with the fast rails but definatly need to use the o-rings that fast provides. I'm using a fast 102 throttle body but it's not on the car yet so I can't tell you for sure if it hits the water pump but judging by what iv read its gonna. You also are probably going to need the fast crossover lines that hook up to the stock fuel lines to the rails.
So are the O-Rings the injector 'adapters'?
ill try to answer as much as i know. yes you will need new fuel rails there are several options but i went withe the billet aluminum rails from FAST, they go on with ease and look awesome. any ls1 style fuel injector will fit but youll have to change the bottom o-ring to a thicker one which does come with the fast 102. some people have used the thicker bosch style injectors but you will need to grind the intake a little to get them to fit properly. i am not familiar with GTP injectors so dont know if they will fit.
Throttle body you can use a 92 or 102, the 92 mm will be easier to tune, there wont be any real horse power different between the two unless your going bigger cubes or forced induction. as far as the water pump the 102 intake hits ever so slightly, its the throttle body that really hits it you will have to grind the water pump a little not really that difficult just have a good grinder. if you dont want to grind the pump many people have said the ls2 style water pump will work with out having to grind but i have no first hand knowledge of this.
lastly when its all said and done you will need to get a tune done.
Throttle body you can use a 92 or 102, the 92 mm will be easier to tune, there wont be any real horse power different between the two unless your going bigger cubes or forced induction. as far as the water pump the 102 intake hits ever so slightly, its the throttle body that really hits it you will have to grind the water pump a little not really that difficult just have a good grinder. if you dont want to grind the pump many people have said the ls2 style water pump will work with out having to grind but i have no first hand knowledge of this.
lastly when its all said and done you will need to get a tune done.
I wouldn't mind using a 92mm TB if there are benefits but I would need an adapter right? I think that would look sloppy not to mention the extra expense If the 102 will run fine with a good tune, I'll just be sure to get a good tune.
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07-02-2012, 11:15 AM
#9
FAST 102:
ls2/3 rails
Your injectors will work but you will need injector adaptors, call Fuel injector connection (FIC)
Go with a 92mm TB. They are plenty and WAY easier to tune. With the 102 I've heard of issues hitting the water pump but that's an easy fix. Either way get a 92mm
ls2/3 rails
Your injectors will work but you will need injector adaptors, call Fuel injector connection (FIC)
Go with a 92mm TB. They are plenty and WAY easier to tune. With the 102 I've heard of issues hitting the water pump but that's an easy fix. Either way get a 92mm
PM hiossilver. He just did that swap with the same injectors.
07-06-2012, 07:47 AM
#12
Yep, I really want to run the 102. I don't want to get in a debate over 102 vs 92 either.
Which 92 TB's bolt right up to the 102 Intake? I see an adapter on ebay with a puicture showing how a 92 TB mates to a 102 intake. The O-ring on the intake is exposed at the bottom. I don't want that...
http://www.ebay.com/itm/102mm-92mm-t...87b915&vxp=mtr
Which 92 TB's bolt right up to the 102 Intake? I see an adapter on ebay with a puicture showing how a 92 TB mates to a 102 intake. The O-ring on the intake is exposed at the bottom. I don't want that...
http://www.ebay.com/itm/102mm-92mm-t...87b915&vxp=mtr
07-08-2012, 06:21 AM
#15
just grind the top ear off of the water pump were it bolts the 2 halves together. Or you can purchase a LS2 pump wich is pressed together not bolted and save yourself the work. I just dont like the idea or grinding the ear down becasue it helps hold the pump together. Ls2 pump is only like $100. Easy insurance
07-08-2012, 10:56 AM
#16
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So any 2005–2006 Pontiac GTO, 2005–2006 Chevrolet SSR, 2005–2007 Chevrolet Corvette 2006–2007, Cadillac CTS-V, 2006–2009 Chevrolet TrailBlazer SS or 2008–2009 Saab 9-7X Aero water-pumps. You're right, they're $110 at Auto Zone. Thanks.
08-06-2012, 09:03 PM
#18
Not any ls2 pump, it is very important to get the one that is pressed together. It is the bolt/boss that hits. 519 252-846 I believe that is the rock auto p/n, that's what it says PB my receipt.
I used the fast ls2 rail, but Bruce at Hawk's told me the oem ls2 rail also works. You need spacers for the rail, they came with my kit.
Read this thread all the way through, https://ls1tech.com/forums/generatio...02-thread.html tells you almost everything. I don't remember it saying, but you must bend the ever lovin **** out of your trans dipstick. It is not hard, looks fine, but took me forever. Foreffingever.
Also, if you use the fast bolts you either need to cut off a hex key, or what i did, buy a tiny ratchet wrench for hex bits. Mine was toolwerks brand from advance, to tighten the 5mm drive shcs used to hold the intake to the heads. gotta get between the rail and intake. If interested I can place a pic in the tools forum, it costs $8.
I used the fast ls2 rail, but Bruce at Hawk's told me the oem ls2 rail also works. You need spacers for the rail, they came with my kit.
Read this thread all the way through, https://ls1tech.com/forums/generatio...02-thread.html tells you almost everything. I don't remember it saying, but you must bend the ever lovin **** out of your trans dipstick. It is not hard, looks fine, but took me forever. Foreffingever.
Also, if you use the fast bolts you either need to cut off a hex key, or what i did, buy a tiny ratchet wrench for hex bits. Mine was toolwerks brand from advance, to tighten the 5mm drive shcs used to hold the intake to the heads. gotta get between the rail and intake. If interested I can place a pic in the tools forum, it costs $8.
