FAST102/92 vs LS6 on Cam Only LS1
02-06-2012, 10:41 PM
#1
FAST102/92 vs LS6 on Cam Only LS1 I decided to pick up a FAST102 intake for our Formula to use as R&D so we did some back to back testing to see exactly how good this intake was compared to the factory LS6 intake on the car. I'll just tease you a little and say it was an unexpected gain in power everywhere! We used an eBay Godspeed 92mm throttle body on the intake.
First here are some pictures. I started off the day swapping stock rockers back on from the Yella Terra roller rockers that were on it. I was curious to see if the tick at idle would go away and see if the power would change any. The car has fresh Patriot Extremes on it. The power didn't change any from previous run's.
I did a baseline pull to make sure we didn't have any fluke pulls from previous times the car was on the dyno and to keep it apples to apples. It made 349.8rwhp and is within 1hp of what it layed down back in September also with no changes.
Got to swapping the FAST intake over and ran into a blue million issues. I had the rails setup with factory 5.3L Flex fuel injectors which are rated at 35.4#/hr which should be plenty of fuel for my needs. Got the intake on and had issues with the braided feed line from the stock hardline to the billet rails. I hooked the stock line back up to a extra fitting I had to limp it on the dyno. Went to crank the car up and nothing... wideband still showed free air so it was getting no fuel. Also the fitting started leaking I had just put in... Pulled all the injectors back out and ran a +/- to each of the injectors to see if they would open and nothing... they were stuck. By this time I was out of time so I went home for the night. The next morning I got my 60# out of my Camaro some fittings and braided line to fix the feed line and went back to work today. After some more fuel leak issues with the rails and injectors I finally got to do some tuning. Did a WOT pull at first and it was right at 20rwhp gain but was really rich so I started doing my normal routine for dialing the car in with parital throttle and idle etc. I did some pulls in SD and SD/MAF modes and they all came in pretty close to one another. 381.3rwhp was the final number!
EDIT**** 3/5/2012
I had some ARH 1-7/8 Headers left off of my Camaro when it had a 403 in it and I am going turbo on it so the headers and Y-pipe were sitting in storage and I wasn't about to take half my money back out of them to sell so I figured I'd put them to good use on my Formula. The car had 1-3/4 pacesetter LT's and TSP off-road Y-pipe when I purchased the car and honestly the fitment was horrible on the Y-pipe so it was a win/win by swapping to the much nicer stainless ARH headers and Y-pipe. While I was swapping parts I also had a big FTP air Lid I had been running on my Camaro also that is over 100mm in size so I swapped that on as well and ditched the 85mm MAF for a straight piece of aluminum piping. The car did need a few tweaks to fueling on the VE table to get lambda back to within a 1% of commanded. Once I got the fueling lined out I did some pulls to see how we picked up. At first I was kinda dissappointed because it only picked up a few peak which put me up to 388.7rwhp. Then I overlayed the old graph and thats when I was shocked! Lets just say this debunks all the people that say 1-7/8 headers are too much for a 346 cube engine! After talking with Brian Tooley about this, he said that the stock small exhaust valve likes larger tube headers and that he had seen similar results on the engine dyno! I'll try to get an overlay to see the big tq differences between the two. But here is the solo run after these mods:
Suspension is minimal on this car....
UMI non-adj LCA's
UMI non-adj Panhard
UMI bolt-on LCA relocation brackets (on lowest hole)
STOCK TORQUE ARM!
Eibach Pro-Kit springs all around
Air-bags set on 20psi in the rear (to clear the 275/60's... need 275/50's!)
EDIT*****
Added TEA St2 CNC 799 Heads and am up to 418rwhp Dyno Dynamics numbers and 11.13@123.6 @ 1400' DA
Since then this car has went 11.07@122 NA with the trans not shifting to 3rd and even with the tranny hurt I sprayed it with a 175 shot anyway and it limped to a 10.34@133mph running out of gear on the top end (mainly due to the convertor flashing to 6000rpm).
First here are some pictures. I started off the day swapping stock rockers back on from the Yella Terra roller rockers that were on it. I was curious to see if the tick at idle would go away and see if the power would change any. The car has fresh Patriot Extremes on it. The power didn't change any from previous run's.
I did a baseline pull to make sure we didn't have any fluke pulls from previous times the car was on the dyno and to keep it apples to apples. It made 349.8rwhp and is within 1hp of what it layed down back in September also with no changes.
Got to swapping the FAST intake over and ran into a blue million issues. I had the rails setup with factory 5.3L Flex fuel injectors which are rated at 35.4#/hr which should be plenty of fuel for my needs. Got the intake on and had issues with the braided feed line from the stock hardline to the billet rails. I hooked the stock line back up to a extra fitting I had to limp it on the dyno. Went to crank the car up and nothing... wideband still showed free air so it was getting no fuel. Also the fitting started leaking I had just put in... Pulled all the injectors back out and ran a +/- to each of the injectors to see if they would open and nothing... they were stuck. By this time I was out of time so I went home for the night. The next morning I got my 60# out of my Camaro some fittings and braided line to fix the feed line and went back to work today. After some more fuel leak issues with the rails and injectors I finally got to do some tuning. Did a WOT pull at first and it was right at 20rwhp gain but was really rich so I started doing my normal routine for dialing the car in with parital throttle and idle etc. I did some pulls in SD and SD/MAF modes and they all came in pretty close to one another. 381.3rwhp was the final number!
EDIT**** 3/5/2012
I had some ARH 1-7/8 Headers left off of my Camaro when it had a 403 in it and I am going turbo on it so the headers and Y-pipe were sitting in storage and I wasn't about to take half my money back out of them to sell so I figured I'd put them to good use on my Formula. The car had 1-3/4 pacesetter LT's and TSP off-road Y-pipe when I purchased the car and honestly the fitment was horrible on the Y-pipe so it was a win/win by swapping to the much nicer stainless ARH headers and Y-pipe. While I was swapping parts I also had a big FTP air Lid I had been running on my Camaro also that is over 100mm in size so I swapped that on as well and ditched the 85mm MAF for a straight piece of aluminum piping. The car did need a few tweaks to fueling on the VE table to get lambda back to within a 1% of commanded. Once I got the fueling lined out I did some pulls to see how we picked up. At first I was kinda dissappointed because it only picked up a few peak which put me up to 388.7rwhp. Then I overlayed the old graph and thats when I was shocked! Lets just say this debunks all the people that say 1-7/8 headers are too much for a 346 cube engine! After talking with Brian Tooley about this, he said that the stock small exhaust valve likes larger tube headers and that he had seen similar results on the engine dyno! I'll try to get an overlay to see the big tq differences between the two. But here is the solo run after these mods:
Suspension is minimal on this car....
UMI non-adj LCA's
UMI non-adj Panhard
UMI bolt-on LCA relocation brackets (on lowest hole)
STOCK TORQUE ARM!
Eibach Pro-Kit springs all around
Air-bags set on 20psi in the rear (to clear the 275/60's... need 275/50's!)
EDIT*****
Added TEA St2 CNC 799 Heads and am up to 418rwhp Dyno Dynamics numbers and 11.13@123.6 @ 1400' DA
Since then this car has went 11.07@122 NA with the trans not shifting to 3rd and even with the tranny hurt I sprayed it with a 175 shot anyway and it limped to a 10.34@133mph running out of gear on the top end (mainly due to the convertor flashing to 6000rpm).
Last edited by LSxPwrDZ; 06-23-2013 at 05:54 PM.
02-07-2012, 07:31 AM
#6
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Holy smokes! Maybe I'll be picking one of these up before I get afr's. My car has already broken 400rwhp cam only, might be interesting to see how much I would gain...
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02-07-2012, 08:31 AM
#8
Intake is stock out of box. I looked at each runner and everything matched up really well inside with no excess protrusions. I didn't use any rings... Bolted the TB right on. I did have to clearance the bottom flange of the TB to clear the water pump though.
I did multiple pulls and all was within a few hp of 430rwhp! I'm starting to wonder if the LS6 intake was oil sludged from the PCV and caused low numbers. This car turned over 100k miles during this test. I bypassed all the PCV and vented it to atmosphere so the new intake doesn't sludge up.
I did multiple pulls and all was within a few hp of 430rwhp! I'm starting to wonder if the LS6 intake was oil sludged from the PCV and caused low numbers. This car turned over 100k miles during this test. I bypassed all the PCV and vented it to atmosphere so the new intake doesn't sludge up.
02-07-2012, 01:45 PM
#10
That is ridiculous. I've seen some decent gains with the intake but I think this is the first time I've seen such a high gain.
More impressive to me is that the gain was at the same RPM as the baseline rather than at a higher RPM. Please update this thread with some track results if you can! Congrats!
More impressive to me is that the gain was at the same RPM as the baseline rather than at a higher RPM. Please update this thread with some track results if you can! Congrats!
02-07-2012, 02:39 PM
#12
If his results are correct he just got gains similar to adding ported heads with much less work. While not topping the bang/buck chart, it wasn't a bad investment for his car.
Heads generally run ~$1000, plus gaskets, bolts, fluids, etc. 35rwhp is significant.
Heads generally run ~$1000, plus gaskets, bolts, fluids, etc. 35rwhp is significant.
02-07-2012, 03:03 PM
#13
I can say that the butt dyno approves as well. The quickest the car has been with the LS6 intake was 11.7@115.6 with 3.73 gears. The car now has 3.42 gears and this intake. I plan on getting back to the track when it opens back up here in KY.
I'm going to put the car back on the dyno here in a few weeks to do a few more tweaks and testing in the tune to see if I can get that 6500+ rpm area from falling off so hard. I'm thinking I have a little too much timing ramping in at that point.
I'm going to put the car back on the dyno here in a few weeks to do a few more tweaks and testing in the tune to see if I can get that 6500+ rpm area from falling off so hard. I'm thinking I have a little too much timing ramping in at that point.
02-07-2012, 10:27 PM
#18
Honestly I didn't care about low low end because this car has a 4000 stall and was spec'd for 3.73 gears but with the 3.42 it acts a tad looser and flashes to 4100 on launch. So no low end is really needed.
BTW these numbers are all with the convertor locked to help keep driveline loss a constant.
Other supporting mods are pacesetter LT's, TSP ORY, cutout in I-pipe to a stock catback. SLP lid and 85mm MAF, 160* stat. Also I made sure to keep ECT at a constant as well to keep from any false data. Air at the time of pulls was in the mid low 60's in the shop. The atmosphere correction on the pulls was 0.947.
Just to add some more data for you fellas to look at. I have nothing to hide or gain in this test, I had just seen alot of different results on here and I wanted to see for myself how it would do.
BTW these numbers are all with the convertor locked to help keep driveline loss a constant.
Other supporting mods are pacesetter LT's, TSP ORY, cutout in I-pipe to a stock catback. SLP lid and 85mm MAF, 160* stat. Also I made sure to keep ECT at a constant as well to keep from any false data. Air at the time of pulls was in the mid low 60's in the shop. The atmosphere correction on the pulls was 0.947.
Just to add some more data for you fellas to look at. I have nothing to hide or gain in this test, I had just seen alot of different results on here and I wanted to see for myself how it would do.
