Just when I think I'm getting near the end of parts I want to buy. ..more pop up.

I saw this thread for the new AS&M runners and was in awe.

https://www.thirdgen.org/forums/afte...they-have.html

My Edelbrocks are definitely different, but I love the stock appearance of these.
Yes I know I'm crazy, but it's a hard-knock TPI life for me. I'll think about it some more.

Porky will be hooking me up with a new MSD distributor it seems.

Need to get that fuel pump next month and then some tuning.
Can't wait for spring!

 

I can't wait for spring either

 

I am thinking of staying with the tpi instead of stealthram. I love the torque. I want spring to get here also! I may have a 79 Jeep CJ7 to play with. If I get it though I lose my t/a money. If I do get it then I can resell it for double my money so I'm leaning toward getting it. Del, if you get those runners be sure to post up and difference. Would you have your base ported to match?

 

If I do get them I'll keep them on the backburner for awhile.
After the dizzy/fuel pump/tuning I'm going to get a dyno this Spring and maybe later in the year swap the runners and dyno again to see the real diff.

Yes of course I'll make sure the base & plenum are port matched.
Bennie did a great job of matching the Edelbrock base and stock plenum on there now, but I'm sure these would require opening them up even more.
These just look great to me, like large stock versions, representing the TPI nicely.

 

The main reason I am thinking of going stealthram is to clean it up in there. I do love the way those spider legs look.

 

Yeah I do like the clean look Trav is sporting, it's just not meant for me.

 

I don't think I can ever get my engine bay clean enough, But I believe this new wire harness will help tons since it enters from two spots in the engine bay right behind the engine. I drool just thinking about it!

 

This is something I've done a "search" on and I'm interested in as I would like to appear "stock". How much more CFM do you need to feed 400bhp as opposed to the factory 220? I know this is a complex ? as I will need new free flowing heads, larger TB, intake, runners, etc. I have read that the 5.0 had better air/fuel ratio at higher RPM's than the 5.7 did(from the factory). I know that I will need more air in to get more HP, but how much? Anyone know the factory CFM on the (kinda)stock TPI I'm running? RU-QWIK cleaned out the inside plenum cavity. Will a 58mm TB and these AZ S&M runner with matched ports and intake help my stock motor? Thanks, Daniel U

 

That's going to be a tough one to answer.
It's not all about air, you need to maximize fuel and match all your other components properly.

Each part has different flow #'s, so I'm not sure what you're asking.
If you mean specifically the runners, about 200 CFM.

Here's a good chart of various Air Volume part comparisons:

http://www.smokemup.com/images/accel_flow_numbers.gif

The obvious answer, yes.

I don't think you need a 58mm TB, you won't be utilizing it with what you just listed above.

You won't get close to 400bhp w/out nice heads and cam or a power adder.
If you're going to remain TPI like myself, replacing the other items to flow more will be necessary not to restrict it, but runners/porting will only help so much.

There's a reason these guys like the aftermarket intake setups like HSR or Superram, it's just not the path I want to go.

 

Quote:

Originally Posted by OUTATIME GTA

That's going to be a tough one to answer.
It's not all about air, you need to maximize fuel and match all your other components properly.

Me too! I'd like to be able to lift my lid and appear stock to the average guy.

 

After reading you website I realized we both have "Gun metal" grey cars with the L98/700R4/BW 9bolt/3:27(and we have similar goals for the future of plans). Although your Pontiac options differ from my Camaro ones, very similar cars. Do you have 4 wheel disc.? Did you get the 1LE shaft from the factory(just curious)? I have lusted after the Carbon Fiber one ever since I learned about "rotating mass" properties. I have heard that they are lighter than the aluminum ones and strong enough to handle 400 BHP. Are you going to the SC GTG? It would be nice to meet you and check out your ride in person. Mine is a sorry site compared to your 65K original miles car. VERY CLEAN!

 

His bird is sweet. He said he's leaving it to me in his will.

 

 

That's a lot of Q's, haha.

Of course. A few months ago, I was probably around 260rwhp (~315hp).
A bigger cam, different intake, 350 is easily made.

Depends what your plans are.
If you will be pushing well over 400hp eventually, go with the 58mm.
My TB is Holley, my runners are Edelbrock.
I think my car is far from "stock appearing" when I pop the hood, but I have retained all the factory options, e.g. smog, a/c and the TPI.

Get where? I've been done with that portion for years, I've got pretty much all the basic bolt-ons and suspension parts that I'm going to need.
I'm a firm believer that it's the sum of all the parts, big and small working together that will reap the greatest rewards.

This depends on what your goals are for your car.

Yep.

Yep, the aluminum driveshaft was factory on the GTA, not just the 1LE.

That's the plan thus far.

From your email I got.

Thanks for the compliments. Yep I'm Del.
We actually exchanged some messages back and forth when you first joined here last year as I recall.
I'm sure I'll see you out at a GTG this year.
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Haha, get in line buddy.

 

again! I appreciate your info.

 

I think I read somewhere that a 52mm TB flows about the same as a 750cfm carb. also read unless you making big power or have a big motor a 58mm TB will be to big. bue to the size at low engine speeds the air is already moving slow that with the 58 it will slo down the air velocity even more, meaning you will lose some low end torque. I believe the stock TB can support up to 400hp

think I read most of this in the tpi insider hits. has some good info in it but I wouldn't buy it. most is just test they did to make their products and them crying about how GM copied them by upping the fuel pressure on the LT1's

 

Cool, thanks. I'm always learning fun stuff on this site!

 

I don't know about the throttle body. Sure theres velocity, and it may 'slow' down coming into the plenum, but really, the air is going to create a velocity at the most restricted point, the intake runners into the heads. I don't believe that a 58mm will cause a problem in power, May not help right away either, but why go 52 when 58s are only nickles more?

 

I'll probably have to wate a while. All my $ is going to this ----->
http://67-72chevytrucks.com/vboard/s...37#post1949737
Then the wife want's a bigger house, then the 88 IROC goes under for a transplant of sorts. 5 speed, Spohn K member, new motor, Carbon fiber driveshaft.........So when I get there I'll be doing more research for sure. It's just good to have a plan. I still haven't seen the Pink Fairy or Dels GTA in person, but know that you both have some nice mods and 1/4 mile times.

 

https://www.thirdgen.org/forums/tpi/...highlight=58mm

It seems that the general concensus is that unless you are running a stout 383 or forced induction, a 52mm is more than enough.

 

My quarter times suck in perspective to what they should have been, I know my mistakes and each time around I repair those and do better.

Next time my 'pink fairy' is on the road however, it wont be so pink anymore, but should be sporting a nice new coat of red.
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But a 58 doesnt hurt.

 

Actually, it could, that's the point.
If there's a risk it could affect the tuning/idle/air flow negatively, it's not worth the risk IMO.

 

Not worth the risk? theres no risk. Just like any other throttle body, (even a stock one from a different car) you are going to have to retune the blade for idle and then reset the tps. once that is done there is no problem.

 

Somebody who is not into tuning and just bolts one onto a mild-bolt-on TPI will probably not see a positive benefit.

 

Correct, But if you are looking to upgrade throttle bodies, then why not go 58.

 

How's that paint job coming along?

 

It's last thing on the list.

I just sent you a text msg on the phone, READ IT!