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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Mon Sep 18, 2006 8:24 pm Post subject: The quest for more! |
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So I finally decided to delete the A/C and change the CAI on my 383 from the factory dual filters. Here's how it looks now. I'm going to get it welded and then paint it blue to match the rest of the car. Butt dyno says it definately picked up a few more ponies. Just getting rid of the A/C junk and the smog pump seemed to help the motor spin up faster but when I added the CAI I actually saw a difference on my datalog. BLM's above 3,000 RPM that used to be 126-130 are now reading 134-140. I figured it would have been leaner but it wasn't the case. Anyway, here it is as of now. Just need to find some time off during the week to go get it welded. No more air restriction here!
Magman
 _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012) |
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Schultzy89GTA M.R.A. (11sec Club)

Joined: 08 Jan 2004 Posts: 4417 Location: Gresham, OR
1989 Pontiac GTA
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Posted: Mon Sep 18, 2006 8:39 pm Post subject: |
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Nice and clean man
-Schultzy _________________ Red Sled: 89 GTA, 383, TKO, N2O
12.73 @ 109.39, 1.793 60 \ 11.794 @ 121.16, 1.62 60 (old combo) |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Mon Sep 18, 2006 10:34 pm Post subject: |
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Looks nice! I'd get it polished rather than painting it, but it'll look good either way. _________________ '86 Trans Am - 5.0L TPI - LT1 cam - 700R4 - WS6
'85 Camaro Berlinetta - IROC clone
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Tue Sep 19, 2006 8:06 am Post subject: |
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Nice place for the MSD box  |
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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Tue Sep 19, 2006 11:40 am Post subject: |
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Yeah, I thought about polishing it too but, with the polished valve covers, HSR plenum and the TT's, I'm about tired of polishing! I think painted blue is the way I'm going.
What a difference it made losing the A/C! I can actually see my spark plugs now!
I think I'm going to have to switch to 30# injectors too, I believe the 24's are maxed out at 4500 RPM. MTF
Magman _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012) |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Tue Sep 19, 2006 6:39 pm Post subject: |
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| Twilightoptics wrote: | Nice place for the MSD box  |
Got mine in the same place!
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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Tue Sep 19, 2006 7:09 pm Post subject: |
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Yeah, the MSD fits there nicely.  _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012) |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Tue Sep 19, 2006 10:16 pm Post subject: |
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Yeap. Great place. Mine's been there since 2003.
And that's been a long time. I haven't had TPI or a STB since then either lol. Hooray for HSR ! |
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blue89 Member

Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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Posted: Thu Sep 21, 2006 10:37 am Post subject: |
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My coil is there, does this count for anything?
So would you recommend the CAI over a stock dual snorkle setup?
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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 4:28 am Post subject: |
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Hmmm...tough question now that it's done. I say yes, if your engine needs it. That is, if the stock setup is an airflow restriction then this type of CAI will improve the engines performance. The stock filter can appparently flow more than expected, my BLM's barely slid to the lean side indicating the engine was able to use the extra air. I'd say on a slightly modded 350 (or smaller) you wouldn't see a difference. On a big headed 350 and larger, slight improvements will be realized from this type of CAI. For me, thats what I was looking for, a slight improvement and eliminate the restriction (if there was one). Each setup is different though, my restriction now is the unported 190 AFR's and my 52 MM throttle body.  _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012) |
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blue89 Member

Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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Posted: Fri Sep 22, 2006 7:22 am Post subject: |
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52mm! EEEK! Stock 2.8's are a 50ish! I hope your's is a dual 52. I'm going to put the dual 45mm on my TBI s10 and see how it reacts.
Does your intake have provisions to tweak around with the motor? I know that under acceleration the motor will pull to one side so I'm just thinking that the new intake looks solid enough not to bend with it. Just asking. And do you think that this draws cooler air than stock? _________________ E30
86 RS - 7.4L V8 SOLD
89 RS - 3.25L V6 REMOVED
89 RS - 5.7L LT1 SOLD
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 2:53 pm Post subject: |
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| blue89 wrote: | 52mm! EEEK! Stock 2.8's are a 50ish! I hope your's is a dual 52. I'm going to put the dual 45mm on my TBI s10 and see how it reacts.
Does your intake have provisions to tweak around with the motor? I know that under acceleration the motor will pull to one side so I'm just thinking that the new intake looks solid enough not to bend with it. Just asking. And do you think that this draws cooler air than stock? |
Port EFI are twin blade... so its 52mm x2.
FYI The Ramjet 502 (502HP) runs a twin 48mm TB. |
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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 4:11 pm Post subject: |
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Hopefully the 6" rubber MAF boot performs as advertised and flexes with any engine movement during acceleration (there's really not much though) .
Colder air...nah. It gets the same outside air temp as before, just unrestricted flow now that it is going through 3.5" mandrel bent tubing. _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012) |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 5:29 pm Post subject: |
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Make sure your boot is nice and lubed. Mine cracked and I have to find another.
Cracked on the inside of one of the ribs from the HSR sticking up higher.
What battery relocate kit did you use? I need to do such things. |
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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 8:04 pm Post subject: |
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I bought the Moroso battery box along with a Summit Racing relocation kit. It worked out fine.
Let me know when and where you find a place to purchase a MAF boot. I borrowed this one from my wifes 88 and haven't been able to find one to replace hers yet. Don't need one right now but, this winter I plan to rebuild her L-98 and I'll need another one in the spring. Or maybe I'll just convert hers to Speed Density since I already know how to tune that, hmmm... _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012)
Last edited by Magman on Fri Sep 22, 2006 8:32 pm; edited 2 times in total |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Fri Sep 22, 2006 8:05 pm Post subject: |
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CAI helped my LB8 a little plus it looks cool! This plumbing will also stay in place once my turbo is installed.
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Magman 11sec Club
Joined: 02 Apr 2005 Posts: 217 Location: Whidbey Island
1990 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 8:34 pm Post subject: |
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RSFreak,
Looks nice, is that polished? Turbo eh? Sweet! _________________ 1990 IROC-Z, 383 HSR, 3.70 9-Bolt
383 RWHP / 372 TQ
11.78 @ 115 w/1.59 60' (8-18-2012) |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Sep 22, 2006 11:11 pm Post subject: |
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| What type of turbo setup are you planning on running? |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sat Sep 23, 2006 12:03 am Post subject: |
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| IROC Magman wrote: | RSFreak,
Looks nice, is that polished? Turbo eh? Sweet! |
No, unfortunately, its plastic! Except that long tube on the far right, that one is aluminium. Specter stuff to be exact. I don't care what anyone says, I love their sh*t!
The turbo is probably gonna be a to4e, inner cooled and all custom so that I can be cheap (relatively speaking) and piece it together slowly. I'm just getting into PROM burning and perhaps I will be able to tune the computer for boost, but I may take the easy way out and get an FMU.  |
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Xophertony Rodeo Queen

Joined: 13 Oct 2005 Posts: 5306 Location: Portland, Oregon.
1988 Pontiac GTA
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Posted: Sat Sep 23, 2006 12:44 am Post subject: |
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i don't know about performance, but i noticed a ~20* drop in coolant temperture once i installed my CAI on my LB8. (stock guage, so 20* is an estimate). it also makes that cool "whistle" at ~2K .
while i did nnot notice a performance gain, i can't imagine that there was not one. if you have ever seen the stock intake setup on one of these you would know what i am talking about. it pulls air from the right place i suppose (same as my L98) but it gos from the box into the maf, then 2.5" round, a hard 90* into 1.5" X 3" square, then a hard 90* to 4" oval. here is a photo. NOTE: you may have to log into TGO to view this, i don't.
 _________________ 86' firebird (Junked in 2015). 88' GTA (sold in 2020).
| aaron_sK wrote: | | Hell, Tony drove his GTA to Cows a few years back with the pickup coil that came out in pieces. |
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