(Video) 10 intakes tested for power on 383 w/results
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Car: 89 GTA ASC Conv., Prev: 89 GTA 6.3L
Engine: 5.7L L98 TPI
Transmission: 700r4 Automatic
Axle/Gears: 3.27:1 w/ JG1 Options:B2L, N10, U1A
(Video) 10 intakes tested for power on 383 w/results
This is a pretty cool video comparing different intake designs
this guy has always liked extrude Hone, even 30 years ago when he used it on his Mustang which he campaigned. Pretty interesting results in this video
this guy has always liked extrude Hone, even 30 years ago when he used it on his Mustang which he campaigned. Pretty interesting results in this video
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Re: (Video) 10 intakes tested for power on 383 w/results
It's amazing what just a change in intake runner length can do to a power curve. I would argue that, with the right cam, the TPIS long runner setup would have made over 550 Lb-Ft of torque. All of this in just a little 10:1 383!
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Car: 92 Firebird, 77 Trans Am SE, 86 Z28
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Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: (Video) 10 intakes tested for power on 383 w/results
This was all stuff he did long ago. We've discussed it back then but it's nice to see a video and have his commentary attached.
https://www.thirdgen.org/forums/tpi/...feb-super.html
https://www.thirdgen.org/forums/tpi/...feb-super.html
#4
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Re: (Video) 10 intakes tested for power on 383 w/results
Came here to post this video.
But I am so disappointed with the fact that they are running a 383 with AFRs. This is extremely uncommon.
It would really be better for someone to test this on stock long block as that is what MOST people are running.
But I am so disappointed with the fact that they are running a 383 with AFRs. This is extremely uncommon.
It would really be better for someone to test this on stock long block as that is what MOST people are running.
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Car: 89 GTA ASC Conv., Prev: 89 GTA 6.3L
Engine: 5.7L L98 TPI
Transmission: 700r4 Automatic
Axle/Gears: 3.27:1 w/ JG1 Options:B2L, N10, U1A
Re: (Video) 10 intakes tested for power on 383 w/results
I ran a 383 with AFR heads. It was common to me, every day. Ran a JL-1 (SuperRam) back then. Looked cool, delivered results. Might go big runners from AZ Speed and Marine, then extrude hone a big base and port the plenum, if to do it over again.
#7
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Re: (Video) 10 intakes tested for power on 383 w/results
Regardless,,, Air Flow, Trick Flow, or Mo Flow, it is still a good comparison of what the different intakes can do on the same engine. Would have been nice if he would have used the same sized TB though.
Last edited by BadSS; 06-15-2020 at 10:12 PM.
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Re: (Video) 10 intakes tested for power on 383 w/results
Wish they would have also included a FIRST TPI intake, since that is the most radically different from stock that still has the longer runners and TPI look.
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Re: (Video) 10 intakes tested for power on 383 w/results
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Re: (Video) 10 intakes tested for power on 383 w/results
The problem I see with it having AFR heads is when the article was originally published in 2005 it was reported to have Trick Flow heads (pictures appear to be TFS).
Regardless,,, Air Flow, Trick Flow, or Mo Flow, it is still a good comparison of what the different intakes can do on the same engine. Would have been nice if he would have used the same sized TB though.
Regardless,,, Air Flow, Trick Flow, or Mo Flow, it is still a good comparison of what the different intakes can do on the same engine. Would have been nice if he would have used the same sized TB though.
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Re: (Video) 10 intakes tested for power on 383 w/results
I would concur that a similar shift in power would appear in a stock L98 engine, abet it might be skewed in favor of the stock style (long runner) design due to cam selection and limited flow of stock heads.
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Re: (Video) 10 intakes tested for power on 383 w/results
I believe this was ran on a 383 for three reasons. 1: This particular 383 was available at the time and easy to use. 2: It allowed the larger intakes to breath easier, thus showing a larger difference in power. (This was for a magazine article, so big numbers= big advertisement numbers. IE: +75 Horsepower with 1 intake swap!) 3: While an aluminum headed 383 might not be a starting point for most people, it is not out of the realm of typical street car builds.
I would concur that a similar shift in power would appear in a stock L98 engine, abet it might be skewed in favor of the stock style (long runner) design due to cam selection and limited flow of stock heads.
I concur. I would love to see the FIRST TPI tested back to back with the TPIS ported intake and the stock intake. It appears the TPIS long runner intake is no longer available, so maybe the FIRST is a better replacement?
I would concur that a similar shift in power would appear in a stock L98 engine, abet it might be skewed in favor of the stock style (long runner) design due to cam selection and limited flow of stock heads.
I concur. I would love to see the FIRST TPI tested back to back with the TPIS ported intake and the stock intake. It appears the TPIS long runner intake is no longer available, so maybe the FIRST is a better replacement?
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Re: (Video) 10 intakes tested for power on 383 w/results
Wish they would have also included a FIRST TPI intake
Those pesky details always mess up a good complaint.
#14
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Re: (Video) 10 intakes tested for power on 383 w/results
What you may be thinking about is the 355 IROC I built in 2002 for the wife. I was one of the first to do a tech article on the StealthRam back in 2003 for GMHTP. They later republished the article in Super Chevy and they have Part 2 on their website.
http://www.superchevy.com/how-to/030...third-gen-iroc
Here's what they left out of the online article, which is the real meat and potatoes
Anyway, no dyno numbers but solid track data on the three intakes (best results in similar conditions)
TPI / SLP Intake (fully ported GM base and ported SLP runners to the 1/2 way point)
(7/20/02) 88*F / 29.92 barometric pressure / 86 percent humidity
8* initial timing, VERY heavy burnout, foot brake off idle, staggered throttle launch (pumping the gas well past the 60ft mark), 5,500/5,500 shifts. Practically impossible to launch with the base timing at 10-degrees – dropped timing 8* to help hooking, 6-degrees helped 60ft, but really killed MPH
60ft------ 1/8 ET -----MPH ------ 1/4 ET ----- MPH
1.873 --- 8.268 ----- 83.94 ---- 12.953 --- 104.40
Holley StealthRam (minor clean-up, rolled the top edges on the base intake)
(8/10/02) 85*F / 29.92 barometric pressure / 89 percent humidity
16* timing, 46 psi fuel, 20 psi tires, heavy burnout, foot-brake 1,800 rpm – full throttle launch with heavy burnout, 6400/6200 rpm shifts. A blind monkey could launch the car after a decent burnout,,, no traction problems.
60ft------ 1/8 ET -----MPH ------ 1/4 ET ----- MPH
1.803 --- 8.133----- 86.27 ---- 12.673 --- 107.84
FIRST (box stock, even used the older gasket that overlapped the runners)
(4/9/05) 83*F / 29.92 barometric pressure / 84 percent humidity
10* timing, 42 psi fuel, 20 psi tires, heavy burnout, foot-brake 1800 rpm, near full throttle launch, moderate traction problems
60ft------ 1/8 ET -----MPH ------ 1/4 ET ----- MPH
1.707 --- 7.992 ----- 85.53 ---- 12.599 --- 106.70
I did a TON or porting on the stock base (it was getting pretty thin in spots) and the SLP runners were siamesed to a little less than the halfway point. They were ported as much as possible without cutting open and welding. I went so far as to take the runners on and off the car and take 1/2" at a time off the runner length until the ETs and MPH leveled off.
That TPI/SLP intake combo was as "tuned" for that combination as it could possibly be and the box stock FIRST was almost 4-tenths faster. In fairness to the TPI/SLP combo, it was VERY traction limited and I had to take timing out of it to get a decent ET. The FIRST wasn't as traction limited and would 60ft a lot better. Neither had a custom chip and both would have benefited. Still, there's no question that the FIRST was and is considerably better and more cost effective (you couldn't pay me enough to port another stock TPI intake like l did this TPI/SLP combo).
The FIRST ran fractional quicker than the HSR, but the HSR trapped fractionally higher. The throttle response was considerably better with the FIRST and overall I liked the FIRST a lot better than the HSR on this mild to moderate 355 with TH350 combo. In fairness, the more cam, more gearing, and more stall speed a car has it will favor the HSR (short/shorter runner), especially the 5 and 6 speed cars. Either can work "better" than the other depending on the combination.
HTH
#15
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Re: (Video) 10 intakes tested for power on 383 w/results
AirSensors sold the FIRST TPI intake rights to Electromotive, which they marketed as their "Individual Runner System (IRS)" - they ground off the F and the T from the plenum. They did well in the few dyno shoot-outs they were included in back in the late 80s and early 90s. I REALLY wanted one back then, but they were around $3000 with the electronics and neither wouldn’t sell the intake system by itself. Only the rich dudes could afford them and that's part of the reason most knew little to nothing about them back then.
Thankfully Ken was able to buy the casting rights from Electromotive years later and started First Fuel Injections (in 2000), selling the intakes with and without electronics. So, the intake has been around for a while under one name or the other.
Last edited by BadSS; 06-17-2020 at 04:15 AM.
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Car: 89 GTA ASC Conv., Prev: 89 GTA 6.3L
Engine: 5.7L L98 TPI
Transmission: 700r4 Automatic
Axle/Gears: 3.27:1 w/ JG1 Options:B2L, N10, U1A
Re: (Video) 10 intakes tested for power on 383 w/results
Actually the intake was built and designed by Air Sensor out of Seattle, Washington in the mid-late 80s. Their EFI product line was called "Fuel Injection Research and Systems Technology (F.I.R.S.T)". The F.I.R.S.T. product line included a "flagship" Tuned Port Induction (TPI) system. Hence the reason “FIRST” is cast on the plenum and “TPI” is cast on the throttle body block-off plate (on the side if front mounting the throttle body).
AirSensors sold the FIRST TPI intake rights to Electromotive, which they marketed as their "Individual Runner System (IRS)" - they ground off the F and the T from the plenum. They did well in the few dyno shoot-outs they were included in back in the late 80s and early 90s. I REALLY wanted one back then, but they were around $3000 with the electronics and neither wouldn’t sell the intake system by itself. Only the rich dudes could afford them and that's part of the reason most knew little to nothing about them back then.
Thankfully Ken was able to buy the casting rights from Electromotive years later and started First Fuel Injections (in 2000), selling the intakes with and without electronics. So, the intake has been around for a while under one name or the other.
AirSensors sold the FIRST TPI intake rights to Electromotive, which they marketed as their "Individual Runner System (IRS)" - they ground off the F and the T from the plenum. They did well in the few dyno shoot-outs they were included in back in the late 80s and early 90s. I REALLY wanted one back then, but they were around $3000 with the electronics and neither wouldn’t sell the intake system by itself. Only the rich dudes could afford them and that's part of the reason most knew little to nothing about them back then.
Thankfully Ken was able to buy the casting rights from Electromotive years later and started First Fuel Injections (in 2000), selling the intakes with and without electronics. So, the intake has been around for a while under one name or the other.
Interesting history, and why the intake has been "around" forever!
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Car: 92 Firebird, 77 Trans Am SE, 86 Z28
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Re: (Video) 10 intakes tested for power on 383 w/results
I believe the Vector W8 used the FIRST as well, which clearly predates the article.
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Car: 89 GTA ASC Conv., Prev: 89 GTA 6.3L
Engine: 5.7L L98 TPI
Transmission: 700r4 Automatic
Axle/Gears: 3.27:1 w/ JG1 Options:B2L, N10, U1A
Re: (Video) 10 intakes tested for power on 383 w/results
#19
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Re: (Video) 10 intakes tested for power on 383 w/results
https://www.thirdgen.org/forums/alte...ke-625-hp.html
#20
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Re: (Video) 10 intakes tested for power on 383 w/results
No dyno numbers as of yet real world numbers tho
383 with ported and polished 113 heads,lpe219 cam,1.6 RR's , first performance intake, 36 lb injectors, holley hp efi system, built 700r4 2600 stall convertor s60 dana rear 3.54s race weight guessing 3500 lbs haven't weighed it since this new setup.. car is on a set of nitto 555rs which really didnt hook..here are the ETs
I think there is more in this combo considering it was my wifes 1st time out with the new setup and it shifted at stock shift points...
383 with ported and polished 113 heads,lpe219 cam,1.6 RR's , first performance intake, 36 lb injectors, holley hp efi system, built 700r4 2600 stall convertor s60 dana rear 3.54s race weight guessing 3500 lbs haven't weighed it since this new setup.. car is on a set of nitto 555rs which really didnt hook..here are the ETs
I think there is more in this combo considering it was my wifes 1st time out with the new setup and it shifted at stock shift points...
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#21
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Car: 89 GTA ASC Conv., Prev: 89 GTA 6.3L
Engine: 5.7L L98 TPI
Transmission: 700r4 Automatic
Axle/Gears: 3.27:1 w/ JG1 Options:B2L, N10, U1A
Re: (Video) 10 intakes tested for power on 383 w/results
No dyno numbers as of yet real world numbers tho
383 with ported and polished 113 heads,lpe219 cam,1.6 RR's , first performance intake, 36 lb injectors, holley hp efi system, built 700r4 2600 stall convertor s60 dana rear 3.54s race weight guessing 3500 lbs haven't weighed it since this new setup.. car is on a set of nitto 555rs which really didnt hook..here are the ETs
I think there is more in this combo considering it was my wifes 1st time out with the new setup and it shifted at stock shift points...
383 with ported and polished 113 heads,lpe219 cam,1.6 RR's , first performance intake, 36 lb injectors, holley hp efi system, built 700r4 2600 stall convertor s60 dana rear 3.54s race weight guessing 3500 lbs haven't weighed it since this new setup.. car is on a set of nitto 555rs which really didnt hook..here are the ETs
I think there is more in this combo considering it was my wifes 1st time out with the new setup and it shifted at stock shift points...
My 383 in the GTA w/ 3.27 gears, ran 12.2@115 in the 1/4 mile on BFG TA tires. 245/45/16. It had the JL-1/SuperRam intake and AFR 195 heads, and an LPE 219/219 cam + 1.6RRs. I hope your car has more in it. Keep at it.
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Re: (Video) 10 intakes tested for power on 383 w/results
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