intakes/runner opinions
12-09-2003, 06:07 PM
#1
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Car: 1988 IROC-Z
Engine: LB9
Transmission: 700R4
intakes/runner opinions
ive searched around a lot and done large amounts of research on the subject but i thought id ask straight forward for peoples experiences/opinions...im gonna ge ta intake baseplate and runners...i was gonna go with edelbrock a while ago but i want the best possible setup i can get and im not sure edelbrock is that...maybe not i dunno...hows the tpis big mouth? thats what im leaning toward now...it seems its the best besides the accel which i cant bring myself to ever pay for
...as far as runners go, what are the best for a 305 ( i want non siamesed)...are the tpis ones worth the $475!?...are the nice cheap edelbrock ones good enough? or AS&M? just gimmee ur input...thanks a lot guys
...as far as runners go, what are the best for a 305 ( i want non siamesed)...are the tpis ones worth the $475!?...are the nice cheap edelbrock ones good enough? or AS&M? just gimmee ur input...thanks a lot guys 
12-09-2003, 06:48 PM
#2
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Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
the Edelbrock High-Flo intake and TPIS big Mouth are the same intake base. There both made by edelbrock. TPIS just port matches it and renames it after they buy it from edelbrock. As for with is best Accel,edelbrock,or TPIS there pretty much the same. Theres a write up on this question in the FAQ section of the home page. AS far as runners go i would stay away from the edelbrocks. my friend had them and we didnt like them to much.the TPIS large tube runners and AS&M runneres are both made by arizona speed and marine(AS&M) but the TPIS ones cost more for the same product. I hope this helps ya out with your questions- Eric
Last edited by TPI-Formula350-; 12-09-2003 at 06:54 PM.
12-09-2003, 08:23 PM
#3
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Car: 1988 IROC-Z
Engine: LB9
Transmission: 700R4
yeah thanks for the tips...i think ill go for the eldelbrock and port it if necessary and get some AS&M runners...i hear worse things about tpis everyday...hm
12-13-2003, 12:55 AM
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Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
whats wrong with edlebrock runners? i have the base and runners . Sure I have heard about the base being a little rough .....but nothing about the runners yet ....whats up with them ?
12-13-2003, 11:45 PM
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Car: 1988 IROC-Z
Engine: LB9
Transmission: 700R4
the AS&M runners are the longest runners ive ever heard of although i couldnt tell u how long the edelbrocks are...the general consensus is that the edelbrock ones simply dont flow the best, im sure theyre not bad at all, just not the best...
12-14-2003, 03:48 AM
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Car: 1992 Z28 1LE
Engine: 350
Transmission: T5
get the edlebrock ones and port them out. That's what I did (the edlebrock ports were the same size as factory), and when I was done, I took a sand flapper roll to smooth it all out. I got the Accel runners used for cheap, so I used that as my upgrade. I can't compare it with anything, cause I did a head/cam swap at the same time.
12-14-2003, 09:04 AM
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Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
I had both runners side by side with a digital vernier ....the were NOT the same size at all ..... the runners were 4 mm larger inside dia.
IROCZ88x ...... they are longer are they ? hmmm didn't know that . That changes evvvverything .
IROCZ88x ...... they are longer are they ? hmmm didn't know that . That changes evvvverything .
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12-14-2003, 05:02 PM
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Car: 1988 IROC-Z
Engine: LB9
Transmission: 700R4
Originally posted by D's89IROCZ
IROCZ88x ...... they are longer are they ? hmmm didn't know that . That changes evvvverything .
IROCZ88x ...... they are longer are they ? hmmm didn't know that . That changes evvvverything .
Last edited by IROCZ88x; 12-14-2003 at 05:04 PM.
12-14-2003, 06:13 PM
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Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
i got the edelbrock high-flo base and my ports were noticable larger then the stock base
stock.... 1.470 round entry- 1.960x1.200 exit
edelbrock high-flo.... 1.750 round entry- 2.090x1.280 exit
stock.... 1.470 round entry- 1.960x1.200 exit
edelbrock high-flo.... 1.750 round entry- 2.090x1.280 exit
Last edited by TPI-Formula350-; 12-14-2003 at 06:31 PM.
he he
12-15-2003, 10:28 AM
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Car: 1990 Chevy Camaro Iroc-Z
Engine: 305 TPI
Transmission: 700R4
Personally, I paln on going with the Edelbrock Base/Runners, Ported Plenum, and Holley 52mm TB. I think I am going to have someone port/port match everything for me. I like to do all my own work, but I am a pu$$y when it comes to cutting or grinding anything 
I dunno why I just cannot get myself to do it. I guess I will find someone who will do it. Besides I do not really have the time (wife and baby on the way plus Army!) Here are my plans:
https://www.thirdgen.org/techbb2/sho...hreadid=214595
I dunno why I just cannot get myself to do it. I guess I will find someone who will do it. Besides I do not really have the time (wife and baby on the way plus Army!) Here are my plans:https://www.thirdgen.org/techbb2/sho...hreadid=214595
12-16-2003, 01:02 PM
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Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
Originally posted by TPI-Formula350-
i got the edelbrock high-flo base and my ports were noticable larger then the stock base
stock.... 1.470 round entry- 1.960x1.200 exit
edelbrock high-flo.... 1.750 round entry- 2.090x1.280 exit
i got the edelbrock high-flo base and my ports were noticable larger then the stock base
stock.... 1.470 round entry- 1.960x1.200 exit
edelbrock high-flo.... 1.750 round entry- 2.090x1.280 exit
.....yup ....definately BIGGER ! Mine was toooo
12-16-2003, 01:13 PM
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Car: 1989 TransAm GTA
Engine: One sweet modified 355 TPI.
Transmission: The kind that shifts....
I've got the AS&M Siamesed runners, supposed to be 1.75" I think, their siamesed runners are the same diameter as the non-siamesed runners. 1.75"
One thing to note, the First TPI setup will swap in place of an existing TPI, everything but the fuel rails will swap with no problem. Inner diameter on the First TPI setup is supposed to be 1.75" and flow enough to feed a 427.
The First TPI manifold with runners is $940 though. :*(
http://www.firstinjections.com/products.htm
One thing to note, the First TPI setup will swap in place of an existing TPI, everything but the fuel rails will swap with no problem. Inner diameter on the First TPI setup is supposed to be 1.75" and flow enough to feed a 427.
The First TPI manifold with runners is $940 though. :*(
http://www.firstinjections.com/products.htm
Last edited by FruityOne; 12-16-2003 at 01:26 PM.
12-16-2003, 01:57 PM
#17
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Car: 1988 IROC-Z
Engine: LB9
Transmission: 700R4
looks pretty cool, ive never seen that stuff before...how good is it? anyone actually have the setup and can coment?
12-16-2003, 02:15 PM
#18
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Car: 1990 Chevy Camaro Iroc-Z
Engine: 305 TPI
Transmission: 700R4
Well TPIS said they will port my plenum for $100. Doesn't sound bad considering the time it takes.
12-16-2003, 09:16 PM
#19
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Car: 1989 TransAm GTA
Engine: One sweet modified 355 TPI.
Transmission: The kind that shifts....
Its aluminum, doesn't take that long to port. And there isn't as much work to be done with a Plenum.
12-17-2003, 08:50 AM
#20
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Car: 1988 IROC-Z
Engine: LB9
Transmission: 700R4
i agree...if tpis charges 100 then the work is probly worth 10...do it urself it will be fun...
12-17-2003, 10:29 AM
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Car: 1990 Chevy Camaro Iroc-Z
Engine: 305 TPI
Transmission: 700R4
Well what did you guys use to do the porting? A dremel or something else? I do not have any grinding or cutting tools so I would have to buy them.
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