I am looking for a new intake manifold that would give me the biggest help getting into the low 13's or high 12's. I already know that the manifold alone wont get me there but, I do need a new one. Thanks for any help.

big tex

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

How much money do you have to put into the cars mods this year? Figure how long you expect to own the car, how frequently you drive it to work and then figure how much you're gonna spend. When you give me a number I'll through out combonations that I would go with if I were in your shoes.

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, Jon (91 RS too many mods to list), getting new engine in summer

 

by the end of 2001, i will have installed the T5, cam, headers, and intake? I guess 250 bones on the intake. And yes, its a daily driver, like to work and stuff. Thanks for your help.

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

i have been happy with the performer tbi, i believe it can go into the 12's. i am already going low 14's on a stock cam and chip, so i can't see why you can't get low 13's or high 12's with a cam and a custom chip.

lata
tim

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91 Camaro RS-LO3,Auto.
14.215@94.30 w/ 1.917 60'

Check Out The East Coast F-Body Nationals Home Page
www.geocities.com/njspeeder

My MAFB.ORG Home Page
www.mycar.net/mafb/registry/detail.cfm?id=299

DSI Racing Home Page

www.geocities.com/foff667

 

the performer tbi...that would be edelbrock, correct?

 

Yes, that is the Edelbrock.

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82 Z28 350, Ported #882 Heads, Performer RPM cam and intake, hedman headers,650 Demon carb,
Trans: Turbo 350 w/ 4000 stall -- Rearend 7.5 w/ Richmond 4.10's, Auburn Minispool
Best ET: 12.52@107.2
Future plans: Dart headed, Roller cammed 383 in early '01


89 RS, L03 305, Hypertech Chip,cat delete, Dynomax exhaust,K&N open element Filter,160 stat, MSD coil --Trans:700R4 Corvette Servo -- Rearend: 7.5 GM 3.42 w/ posi-lock
New Best ET: 14.91 @92.9
Bassett Racing
Mid Atlantic F Body -82 Z28 Page

R.I.P. Dale Earnhardt #3

 

Performer since it's a daily driver. Either that or the holley projection manifold, not sure about bore size though. Do you plan on installing a larger TB an time in the future? Like a 350 swap or no? If you do plan on it then a carb performer intake with the holley adaptor plate should the plan. It's even cheaper than the edelbrock TBI performer intake.

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, Jon (91 RS too many mods to list)
Dale Earnhart, you have done so much, you will be missed.

 

na...i will stick to the 305, and i guess intake i will go with is going to be the performer. if i did switch to a bigger t.b. then would this not be the best manifold to choose? Off subject...sorry...what would be the best bigger t.b. i should get.

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

Single plane

something like the torker II or the weiand 7525? Heck, id even use the victor Jr


i wouldnt bother using a dual plane, i run a single on a much slower car and its completely streetable. You wanna build a race engine, (a 305 that runs 12s n/a is near race engine efficiency in my book) you have to use race engine parts

 

btw, njspeeders car proves one thing, heads are where the power is at. If you really wanna go fast, you really need really good heads. All the other parts in the world can only help so much if the heads are choking the motor. I know this from first hand experience aswell.

 

Pablo...the intakes that you mentioned, you would use them on a daily driver. I agree with you on the part about a 12 second 305 being real close to being a race engine. And heads, if I port and polish the ones I have, will that be sufficient. Because i know that I can't afford edelbrocks heads. Thanks,

big tex


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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

your stock heads will not be sufficient, youll need heads atleast as good as edelbrocks and will most likely need some better heads like AFR's

those manifolds arent really race manifolds with exception to the victor

I run an edelbrock torkerII on my 305 powered daily driver with 305 #416 heads and a pretty big cam. I like the way it runs alot

 

so, the car doesn't run rough below 2500 rpms. Thanks for the head info. Also, does the stock 305 alternator and ac still mount easily on the torker II.

Thanks,
bigtex

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

well it has a lope as any car with a cam pulling 15" at idle does and it doesnt really like to lug under ~1200 rpm but is fine otherwise, it really likes to cruise at around 1600

and everything mounts fine, i didnt even use the AC bracket that goes to the manifold. No problems

 

AFR has a 180cc head that flows with their 190's up to 500 lift and after that is only 5 cfm behind. They are available for 305's.

I've spoken to the guy at the local speed who has a flow bench. For low rise single plane applications he suggests the weiand street ram #7525. Says an edelbrock performer (outflows or flows with, cant remember) the torquer II.

On a stock head motor maybe the torquer would be ok but if your going highly modified use the 7525 or a high rise dual plane like perf RPM.

 

Hey Pablo, didn't your friend in a convertible run an rpm intake on a 350 engine with a 670 tbi? If i remember correctly, his times were really good, so wouldn't it be better to run the rpm manifold instead of the torquer 2 on our cars? this is judging from the fact that the regular performer is somewhat equivelant to the torquer 2 and the rpm manifold is a lot better than the performer. (this goes with stock cam and heads - see 305 buildup in this article even though they are using a carb it still makes a whopping difference when changing from the performer to the performer rpm: http://www.inter-scape.com/ray/305buildup/page1.jpg )

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Pat Hirsz

88 305TBI
Mods:Hooker Aerochamber 3" exhaust, gutted kitty, March pullies, no smog, 180 thermo,
14x4 K&N, 3.42 gears,
Eibach springs with KYB's all around,
Harwood cowl hood, Z-28 wing, fresh paint(black)
120,000 miles, 5spd, T-tops
Run a best of 16.7 @85mph before gears

92 RS, 305TBI, auto, 3.08 gears, 180 thermo, glasspack (no muffler)

 

the performer rpm is a NON EGR manifold, i am not sure about the torker II. what is EGR anyway...and can I use a manifold that is not EGR compatible. thanks,

bigtex

 

EGR is an emissions device. It introduces inert exhaust gasses into the combustion chamber to cool the combustion process thus reducing NOx emmisions.

The weiand street ram #7525 has an egr provison.

Yes you can use an intake w/o EGR but it will not be emissions legal. It may not be exactly computer friendly with your stock calibration. The modifications to the chip that are needed to make it work are fairly simple.

 

thanks bro, it looks like texas is going to be getting more and more strict about there emmissions, so i guess i will stick with the EGR crap. Thanks for the part number.


big tex

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

i just checked out the weiand manifold, and it looks good, but what about the 2800 rpm. that seems damn high to me. also it says its made to be used with aluminum heads. stock heads aren't aluminum, are they?

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1992 305 TBI RS
Flowmaster cat-back exhaust, 14X2.5 open air element...and a T-5 on the way!

 

No the stock heads are cast iron.......but as to why it says to use with an aluminum manifold I have no idea.

I was curious about using a victor jr. intake though. What do yall think?

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1988 Camaro
305 bored .030 over
Stock TBI
Aluminum radiator
No smog pump
gutted factor cleaner
cam ground to crane specs
timing advanced 9 degrees
no thermostat
other than that its bone stock and ran a 16.4 @ 82 mph with earth shattering wheel hop and a 2.88 60 ft time. (this was with the rebuild and cam only)

 

it probably says 86 and prior except aluminum heads because the aluminum vette heads retain the pre 86 bolt pattern

about the torker II vs whatever... I yield to you if you say the 7525 flows more.. i dont doubt that, the torker isnt a race manifold
however
out of all the people that bash the torkerII i have yet to see ONE person come up with some actual track data to prove what they say. The only person to mention anything about it was i believe BassetRacing who put it on a chevelle in the low 13s and subsequently gained 2 mph in the 1/4 and a tenth in worse weather . I think he even mentioned the car was going even faster than the performer later on.. 3 tenths faster? cant remember

the friend of mine with the convertable has a fast car because he has good heads, manifolds and etc mean very little compared to the cyl heads

 

I agree with Pablo. I think with TBI, a Troquer or Victor is ok if your engine/exhaust combo is somewhat matched and you have a custom PROM... Gonna take some serious work but I'm sure it can work great!!!

 

The weiand has a larger runner than the torquer. The velocity will be lower with the street ram and therefore so will low end torque. With TBI, low end torque is not affected in the same way it is with a carb. Many of the low end problems carbs have with low end is associated with fuel metering. TBI does not suffer this woe. There are losses in low end torque on any motor when you shorten intake runners and increase their volume. If you want a tbi car with gobs of low end torque, will be difficult to get it into the 12's with TBI... especially with a 305. You might consider a TPI swap if idle - 5000 is your game.

The 7525 intake flows in the 260-270 cfm range. If your heads are only going to flow 220 cfm at the lifts you plan to run, there is not much of a point in running the bigger intake. Be careful not to mismatch a 260 cfm head like the AFR's to a 220 cfm intake like the torquer... Likewise, the increased runner volume isnt going to do you any favors if you run the street ram on a stock head.

As far as a high performance EGR intake, it looks like the street ram is about the only game in town... at least the only one I've see with the exception of the Edelbrock Performer EGR thats on my car now. The edelbrock isnt exactly a high end intake but it does make decent power to 5800 on my 360ci motor. This motor should go low 13's at sea level with its stock heads and healthy roller cam. I've also got the street ram here waiting for a better set of heads to take advantage of it.

Fast broker is right... dont forget the tuning issue on this car. Start learning DIY tuning now, while your motor is stock.

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1988 T/A,
9" Ford, 3.50 gears, Auburn posi, 700r4 -w- 2100 converter
350 .060 over with forged 1 pc rms crank, and forged TRW pistons, 9.5:1 cr
Factory GM heads Pocket ported, 2.02/1.60 valves, back cut
Lunati roller 219/227, .479/.480, 112 LSA
Holley 700cfm 4bbl on TBI truck 7747 computer and chip by Howell-EFI
Edelbrock Performer EGR intake, Edelbrock TES and 3" cat

 

very helpful, thanks

steven