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My FAST 102 install, Holley TB and rails - DYNO NUMBERS ADDED
With so much misinformation out there about installing a FAST 102 in an f-body, I figure I would document my experience. I'm switching from a FAST 92/92 setup which I had MAST rails with a Nasty N8 fuel system. Crossover in the front with a -8 feed line running to the rear of the passenger side fuel rail, and the return coming from the rear of the driver side rail.
I purchased one of the Vengeance Racing ported 102's for cathedral heads. Also purchased a Holley 105mm TB with the low taper, and a set of Holley billet rails. So far just mocking up stuff in my kitchen, it seems as tho the TB sits perfectly even with the bottom of the intake and I'm hoping I won't have to take off too much material on my water pump. And there is just a slight ridge where the intake opening is just a little smaller than the TB.
As for the fuel rails, I believe they are going to work but I may have to add some washers between the brackets and the intake. I'll play with this some more before I install it on the car. I'm using the Siemens 80lb skinny ls1 injectors. And I'll be putting the fat green o rings on them.
Have a dyno day set for the 26th. So hoping to have it together by then to see if it's worth all the headache. The car put down 571/535 with the non ported 92 setup. The only changes that I have done since that dyno will be adding the 102 and I changed from 3.50 gears to 3.90's. The car traps a little over 103mph in the 1/8. So hoping this will bump it up towards 104 possibly 105. Doubt it tho.
Anyways here are some pictures. Everyone loves pictures lol.
Here's the intake mocked up with the rails and TB. Everything is excellent quality. Especially the TB. It has a ton of features to help with idle and low rpm driving.
Here you can see how the TB sits flush with the bottom of the intake
If you zoom in you can barely see the intake above the TB flange.
A shot of the port work
UPDATE:
Day one: Got a good bit accomplished today. Got a brass fitting that's 1/4" MIP x 5/16" barbed nipple. First I used a small piece of paper to block the hole I drilled to keep plastic shavings out.
Ok got the packaging the brass fitting came in. It only says the ID is 3/16".
But here's a pic of it.
I used a 1/4" NPT tap and slowly worked it into the rear map port.
It was a very tight fit in there so go very slow. The map port is fairly thin. But the nipple doesn't stick out any further than the brake booster port or the hvac port. There's a couple of inches between it and the firewall.
Next came getting the fuel rails and injectors to work. The Holley rails come with two different sets of brackets. One is for ls1/6 and the other is for ls2/3. If you have the shorter ls2 injectors I believe the ls1 brackets will work without any modification.
But since I'm running the long skinny ls1 injectors I was left with roughly a 1/2" gap between the fuel rail bracket and the intake.
So I took some 1/8" NPT unions that I had laying around and cut them down. I got them close on the first try with just eye balling and cutting them in half with a die grinder and cut off wheel. I test fit them a few times and got them pretty close by taking a hair off with a grinder. They're not perfect but they seem close enough. Hoping it all works when I put pressure
to it.
Next up, water pump time. This is already well documented so I won't waste a lot of time on this.
I've read where some guys have had the washers on the ARP head studs interfere with the intake. Well as far as I can tell I didn't have this problem. The washers sit flush in their pockets
Here it is mocked up for the night. Still have a bit more to do. Also waiting on my Nitrous Outlet conversion plate
The 102 should make a nice difference on your car. Don't see why you couldn't pick up a few mph. It would make the hassle of switching to a 102 worth it.
As for the "porting" goes... I just got mine back from another sponsor on here. It looks just like yours. Should be called a smoothing job not a port job... With vengeance offering it for free I think it's a good deal but not worth paying for. Imo unless your sending it to a place that really knows air flow then you are wasting your money. Just saying
Any guesses how much mor HP that Holley TB is worth over the Nick Williams 102mm TB?
Probably zero. But they aren't making the NW in black anymore. Plus this Holley is suppose to be very easy to tune. It has a valve that closes off the PCV completely. So if you're not using it you don't have to plug it off. Also has an adjuster screw for the idle flow. So you can try adjusting it before you actually start adjusting the throttle blade.
Nice thread, we need more of these. I'm mocking mine up later tonight. Have you tried the green o-rings yet? I won't muddy this thread with my experience, but am looking forward to your updates.
Nice thread, we need more of these. I'm mocking mine up later tonight. Have you tried the green o-rings yet? I won't muddy this thread with my experience, but am looking forward to your updates.
No not yet. I know the factory ones felt pretty tight. Soooo if the green ones don't work I might try the stockers lol.
Probably zero. But they aren't making the NW in black anymore. Plus this Holley is suppose to be very easy to tune. It has a valve that closes off the PCV completely. So if you're not using it you don't have to plug it off. Also has an adjuster screw for the idle flow. So you can try adjusting it before you actually start adjusting the throttle blade.
I'm not sure how much one is from a dealer or Holley. I got a hookup on one... But NW doesn't do them in black anymore. And polished wasn't an option haha.
I'm not sure how much one is from a dealer or Holley. I got a hookup on one... But NW doesn't do them in black anymore. And polished wasn't an option haha.
This will be interesting to see what gains you get with the 102. With 440ci it should really benefit tremendously.
It wouldn't surprise me to see speeds of 105-107.
Middle of April I will begin a thread of my 454lsx build with ls3 TFS heads, so it will be fun to compare results with your CP's.
None the less, beautiful car and keep up the fine work!
I'm really not expecting that much. Vengeance did a back to back test of a ported 92 to a ported 102. Only gained 9hp peak. Which my other intake wasn't ported. But I've also added steeper gears which are suppose to take hp away. We'll see.
I'm really not expecting that much. Vengeance did a back to back test of a ported 92 to a ported 102. Only gained 9hp peak. Which my other intake wasn't ported. But I've also added steeper gears which are suppose to take hp away. We'll see.
Those test your referencing were on ls1-ls3 cubic inch combinations
Your signature show 44? Cubic inches, which needs much more than a 102 to see the full potential of.
Your on you way my friend, I'm positive you will see MAJOR improvements.
Yeah, I'm curious as well. I still have the old 92 mm FAST on my 427. Are you going to port match it to your heads? Seems like a few knowledgeable people have said it's definitely worth doing.
03-11-2016, 11:23 PM
My FAST 102 install, Holley TB and rails - DYNO NUMBERS ADDED 
