HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
06-04-2013, 07:41 AM
#1
HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Well, I have a strong feeling I am going to run TPI the rest of the Summer and then swap to something else. I KNOW I'm leaving a couple hundred horsepower on the table and that makes me want to step up and show what my combo is REALLY capable off. AS it sits right now, I am shifting at 6000 so that power doesn't drop off like a brick at 62-6300...
I have trapped 102 in the 1/8 boost only and tuning my meth in this week. I just want more. Isn't that how it always happens though?
Honestly, I am open to all different kinds of intakes. I figure if I am removing the TPI< I want the best thing out there.
Requirements
1) Make huge power to 7000 rpm with 20 lbs of boost
2) Fit under a small cowl
3) Easily allow front facing piping to connect to my piping already there.
4) Ability to run my 58mm Holley TB would be nice, but not a necessity.
I'm leaning towards the stealth ram because of it's simplicity, regular TPI style TB and ease of porting, but also been reading a lot about Edelbrocks Pro Flo intake.
Opinions?
I have trapped 102 in the 1/8 boost only and tuning my meth in this week. I just want more. Isn't that how it always happens though?
Honestly, I am open to all different kinds of intakes. I figure if I am removing the TPI< I want the best thing out there.
Requirements
1) Make huge power to 7000 rpm with 20 lbs of boost
2) Fit under a small cowl
3) Easily allow front facing piping to connect to my piping already there.
4) Ability to run my 58mm Holley TB would be nice, but not a necessity.
I'm leaning towards the stealth ram because of it's simplicity, regular TPI style TB and ease of porting, but also been reading a lot about Edelbrocks Pro Flo intake.
Opinions?
06-04-2013, 07:52 AM
#2
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
What cam and heads. Intake will help hold power on past peak better than conventional tpi but if still mild cam and small heads, may not make power much higher.
With that said, stealth ram has been good for many, but i got nervous about flow distribution and decided to sell it for single plane efi. For boost its hard to pass up single plane efi. Hsr will work and so will pro flo xt just keep an eye on front to rear cylinder distribution. I would install an o2 bunch on say cylinder 1 and 7 primaries and move wideband around to see what it does just to be sure. Read plugs as well
Pro flo xt i dont think can be easily opened to 1206 port, same with hsr unless you got one of the later bases with material around ports. Not sure what size your heads are
Pro flo uses round type throttle body similar to ls. Single plane with elbow uses whatever throttlebody you want as long as the mounting flange is correct. However most shelf available ones are for lsx throttlebody or ford
With that said, stealth ram has been good for many, but i got nervous about flow distribution and decided to sell it for single plane efi. For boost its hard to pass up single plane efi. Hsr will work and so will pro flo xt just keep an eye on front to rear cylinder distribution. I would install an o2 bunch on say cylinder 1 and 7 primaries and move wideband around to see what it does just to be sure. Read plugs as well
Pro flo xt i dont think can be easily opened to 1206 port, same with hsr unless you got one of the later bases with material around ports. Not sure what size your heads are
Pro flo uses round type throttle body similar to ls. Single plane with elbow uses whatever throttlebody you want as long as the mounting flange is correct. However most shelf available ones are for lsx throttlebody or ford
06-04-2013, 07:59 AM
#3
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Sorry, Its my blue Iroc. Figured everyone has heard enough of it already!
AFR 195cc
9/1 compression
solid roller 230/236 .552/.564 110 LSA
20 lbs of boost from a Ysi Vortech
Distribution was a concern of mine as well. TPI is bad about #7 as well!
After thinking of it. Single plane is MUCH better for boost as it spreads it evenly from the top as opposed to front inlet intakes....
AFR 195cc
9/1 compression
solid roller 230/236 .552/.564 110 LSA
20 lbs of boost from a Ysi Vortech
Distribution was a concern of mine as well. TPI is bad about #7 as well!
After thinking of it. Single plane is MUCH better for boost as it spreads it evenly from the top as opposed to front inlet intakes....
06-04-2013, 08:10 AM
#5
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Single plane may not look as pretty as some intakes but if you had a good elbow design feed the center plenum, distribution is pretty good. I did 2 tear downs on my motor and very happy with what i have seen with boost and cylinder to cylinder distribution so far.
Elbow should be a smooth 90 deg bend as large a radius as you can clear underhood. Center divider in the elbow also helps for distribution.
Can run ls1 type throttle body and directly swap in tps and iac sensor wiring to tpi harness. Just need ls1 sensors and connectors
Elbow should be a smooth 90 deg bend as large a radius as you can clear underhood. Center divider in the elbow also helps for distribution.
Can run ls1 type throttle body and directly swap in tps and iac sensor wiring to tpi harness. Just need ls1 sensors and connectors
06-04-2013, 08:34 AM
#6
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Yeah, I have seen some weird things with front mount intake opposed to single planes as well...
I figure IF I'm taking of the TPI, I'm going for the most power possible. It's the only thing holding me back from a FAST streetcar to a Street MONSTER!
I figure IF I'm taking of the TPI, I'm going for the most power possible. It's the only thing holding me back from a FAST streetcar to a Street MONSTER!
06-04-2013, 08:42 AM
#7
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Yeah it should help. Curious why a solid roller over hyd roller on that build? Try playin with lash settings with the new intake to see if you can squeeze more top end power out of it. Maybe different exhaust lash since it seems more of a n/a cam instead of a blower cam. If gearing is good, car will fly with the increased top end power curve
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06-04-2013, 08:44 AM
#8
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
We were building the motor in a different direction when we started. It was going to be a high revving turbo motor. This car sort of fell in my lap and we decided to keep the motor as is and put in here...
Last edited by NufNuffZ28; 06-04-2013 at 09:02 AM.
06-04-2013, 09:22 AM
#11
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Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
If you want high rpm, I would think single plane or miniram would be best.
06-04-2013, 02:09 PM
#13
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Runners are still long enough on single planes to produce good torque. More than miniram and likely on par with stealth ram/pro flo.
You can use those intakes fine just saying be aware of possible distribution issues. May or may not have them. There were a few guys here i believe making more power than me with no issues it seems. Not sure what efi systems they are using, but they may have injector offset functions helping even fuel curve out. I am not sure
You can use those intakes fine just saying be aware of possible distribution issues. May or may not have them. There were a few guys here i believe making more power than me with no issues it seems. Not sure what efi systems they are using, but they may have injector offset functions helping even fuel curve out. I am not sure
06-04-2013, 03:36 PM
#14
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Car: 1989 Trans Am WS6
Engine: SBC+TPI+BOOST
Transmission: 700R4
Axle/Gears: Eaton 373
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Very curious as to what youre latest dyno #'s are?
IMHO, Since im a Thirdgen Junkie, Id love to still see a TPI based intake of sorts under the hood of that "Mag cover car" a Stealth Ram or FIRST unit that hogged out to the max would be very interesting with youre current setup. And it would also make a goal for some of us to try to achieve
IMHO, Since im a Thirdgen Junkie, Id love to still see a TPI based intake of sorts under the hood of that "Mag cover car" a Stealth Ram or FIRST unit that hogged out to the max would be very interesting with youre current setup. And it would also make a goal for some of us to try to achieve
06-04-2013, 03:54 PM
#16
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
IDK about highest flowing, but this one from RHS has a ton of nice features when its compared to my Victor E manifold.
http://www.racingheadservice.com/rhs...ons-10142.html
I run Aaron's standard height intake elbow from 6061.com and a ported LS1 throttle body (LS1 TPS, IAC, and MAP sensor). No hood clearance issues and no air distribution problems whatsoever (then again, I am not FI yet).
If I were to do it again I'd run the RHS mani, Aaron's elbow, and a nick williams TB. The LS1 style tb's with progressive cable tracks improve driveability and idle control over a 4-bbl IMO.
Lots of LS guys are running tons boost through aaron's LSx elbow without any problems
http://www.racingheadservice.com/rhs...ons-10142.html
I run Aaron's standard height intake elbow from 6061.com and a ported LS1 throttle body (LS1 TPS, IAC, and MAP sensor). No hood clearance issues and no air distribution problems whatsoever (then again, I am not FI yet).
If I were to do it again I'd run the RHS mani, Aaron's elbow, and a nick williams TB. The LS1 style tb's with progressive cable tracks improve driveability and idle control over a 4-bbl IMO.
Lots of LS guys are running tons boost through aaron's LSx elbow without any problems
Last edited by 88gunmetalgta; 06-04-2013 at 04:59 PM.
06-04-2013, 03:55 PM
#17
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
I am going back to tune in my meth and I will get those numbers. My TPI is as hogged out as you can get(within reason, meaning no welding, shortening of runners, etc))
I am going to keep the TPI throughout the Summer. 10s should be easy in the 1/4...BUT I know with a different intake 9's would be much more easily in reach!
I am going to keep the TPI throughout the Summer. 10s should be easy in the 1/4...BUT I know with a different intake 9's would be much more easily in reach!
06-05-2013, 11:23 AM
#18
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Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Well whatever you do don't bother with a Pro-flow XT, it looked nice but came with small intake ports like 1204 size and trying to port it bigger would be a real big hassle with welding and such. HSR, MiniRam or a single plane though the looks are not there if that means much to you would be the best options.
Last edited by Tony89GTA; 06-05-2013 at 11:27 AM.
06-07-2013, 01:10 PM
#19
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Car: 1989 Trans Am WS6
Engine: SBC+TPI+BOOST
Transmission: 700R4
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Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Have you even looked at the FIRST unit?
06-07-2013, 02:19 PM
#21
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
As far a i know First arent in production at the moment and will be a longer wait until they get setup again. But i dont think it will match a single plane for power unless you siamese the tpi runners or have custom 2"+ diameter runners and big ported base. Not easy to do
06-08-2013, 10:57 AM
#22
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
A single plane would certainly be your best bet. A miniram may have distribution issues at your power and boost level. If you want to "experiment" with a miniram let me know. I have a beautifully polished unit that would look perfect under your hood 
06-10-2013, 08:29 AM
#23
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
WOW! Very tempting
What kind of pricing would be involved for some experimentation?
Besides, I KNOW that this TPI is having problems with #7, it would surely be better than that
What kind of pricing would be involved for some experimentation?
Besides, I KNOW that this TPI is having problems with #7, it would surely be better than that
Last edited by NufNuffZ28; 06-10-2013 at 08:38 AM.
06-10-2013, 08:46 AM
#24
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Fwiw
Heres an old thread featuring an LT1 on boost and then switching to single plane efi
http://www.afbforums.com/index.php?/...-plane-intake/
Also my friends 520 whp n/a 406 runs single plane victor efi. Before he ran miniram and went 10.6 at 130. After single plane it made the 520 whp and ran 10.4 at 132. Miniram was not ported however.
Test the mini would be nice to see. Would see gains over tpi thats for sure.
Heres an old thread featuring an LT1 on boost and then switching to single plane efi
http://www.afbforums.com/index.php?/...-plane-intake/
Also my friends 520 whp n/a 406 runs single plane victor efi. Before he ran miniram and went 10.6 at 130. After single plane it made the 520 whp and ran 10.4 at 132. Miniram was not ported however.
Test the mini would be nice to see. Would see gains over tpi thats for sure.
06-10-2013, 08:56 AM
#25
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Nice Orr, that combo is VERY close to mine in the SBC, ysi, meth combo. Wow!
I am in the process of tuning in my meth on the TPI, so I will "max" out this combo before switching so I have as close to apples to apples as possible.
Moser 9" centers can eat it, UGGH!
I am in the process of tuning in my meth on the TPI, so I will "max" out this combo before switching so I have as close to apples to apples as possible.
Moser 9" centers can eat it, UGGH!
06-10-2013, 12:14 PM
#26
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
You know I wouldn't charge you a dime to use it. It's all yours until I find a clean IROC to stick my motor in If you like it enough then we can talk turkey. I'll probably be stopping by Mayhem in the next week or so and I can drop it off with Will or Jay if you wanted to get started that soon. Its a 1205 gasket and the ports matched my AFR's perfectly. It's not as good as a single plane, but I picked up 7 or 8 mph on my turd when I swapped from the tpi intake.
What's going on with your rear? New center section noisy again?
If you like it enough then we can talk turkey. I'll probably be stopping by Mayhem in the next week or so and I can drop it off with Will or Jay if you wanted to get started that soon. Its a 1205 gasket and the ports matched my AFR's perfectly. It's not as good as a single plane, but I picked up 7 or 8 mph on my turd when I swapped from the tpi intake.What's going on with your rear? New center section noisy again?
06-19-2013, 02:01 PM
#29
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Car: 91 gta ws6
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Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
why not try the hurricane efi single plane intake,from what i heard its bigger than the e vic junior and performs quite well.
10-17-2013, 09:58 AM
#38
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
So, how did you run your TB cable with the LS TB and elbow. I think you are using one of Aarons intake elbows, correct?
Were you able to retain use of the TPI cable?
Were you able to retain use of the TPI cable?
Last edited by NufNuffZ28; 10-17-2013 at 10:02 AM.
10-17-2013, 10:09 AM
#39
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Here's mine. I used a cable from a 3400 minivan.
Now I'm using Lokar cables and will eventually re-make my brackets out of billet and have them anodized.
Now I'm using Lokar cables and will eventually re-make my brackets out of billet and have them anodized.
10-17-2013, 10:32 AM
#40
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Using a stock 00-02 fbody throttle cable, i believe thats the year. Its longer than stock tpi because the linkage is on opposite side so i wrapped it around motor.
I do have one of aarons custom elbows but it did not have a bracket for the cable. So i made an L shaped bracket that bolts to the intake carb flange on top of the elbow. It runs straight up and i cut a u shape in it to slide the throttle cable end down into the bracket. Zip tie secured it for additional support as it popped off one day lol
I do have one of aarons custom elbows but it did not have a bracket for the cable. So i made an L shaped bracket that bolts to the intake carb flange on top of the elbow. It runs straight up and i cut a u shape in it to slide the throttle cable end down into the bracket. Zip tie secured it for additional support as it popped off one day lol
10-17-2013, 10:39 AM
#41
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
OK. I'm sure I can figure something out.
I did notice that my painter painted the base of the tb cable when he did the engine compartment. I will have an issue if I remove it.
I did notice that my painter painted the base of the tb cable when he did the engine compartment. I will have an issue if I remove it.
10-24-2013, 03:58 PM
#42
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Got an elbow coming that should work with my current Holley TB. It was custom made and should allow use of my stock Thrttle cable as well.
That RHS intake looks NICE!
That RHS intake looks NICE!
10-24-2013, 06:07 PM
#45
10-25-2013, 08:56 AM
#47
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Dont be alarmed if you dont set records right away with same tune and driving style. Intake swap will change the power curve and require you to retune and relearn the launch method and shift points
10-25-2013, 09:10 AM
#48
Re: HIGHEST flowing EFI SBC intake....PERIOD. I may be ditching TPI!
Oh, I know.
Going to run 1/4 in November and get that number and a final dyno number as well. I just want to have as much information as possible before the swap, so I can see where I gained and lost at.
Going to run 1/4 in November and get that number and a final dyno number as well. I just want to have as much information as possible before the swap, so I can see where I gained and lost at.