Fmandan

The choices are:

1. ACCEL

2. TPIS (bigmouth)

3. Edelbrock

4. Scoggs/Dicky

GOY

Accel.

Edelbrock makes TPIS's intake, but TPIS port matches there's. However, the Edelbrock base has been known to strip, warp and crack for several members. I would only by the edelbrock base if it was $150 new, $100 used.

The Scoggs intake hasn't had any problems that I know of, but it only fits Vortec heads....

87TPI350KID

Ive heard alot of good about the super ram base (accel)

8Mike9

Accel is mighty proud of thier base nowadays, last time I looked at jegs and summit the base was over $500...

I got lucky in a group buy a few years ago, think I paid about 300 or so for the one on my car...

Just picked up a Accel base and SR intake, and notice they now cast the Vette EGR in them...could be the difference in price, I dunno.

Thing is, I've heard horror stories about the Edelbrock (search, and you'll see about fuel rail bosses, ect) but never heard a negative about the Accel base.

SR installs another story, but I have a set of heli-coils to cure the install issues everyone gripes about.

Oh well, just rambling on...

IROCZZ3

My old Accel base (circa 1995) had the Vette EGR cast in it.

You're right though, Accel is awfully proud of that base. I paid 380ish for mine 10 years ago and I still thought that was expensive. Especially considering back then you can get an upper AND lower intake for a 5.0 Mustang for a little over 500 bucks.

89 Iroc Z

Definitely Accel. Don't get Edelbrock whatever you do; they have the worst quality control ever makes you wander if they even have quality control or if everything they makes gets shipped out without even being checked. Everything I have bought from Edelbrock has been out of tolerance or just not right. Do a search and you will find many people have the same problem.

D's89IROCZ

My eblebrock setup rocked !



Best looking LTR aftermarket intake out there. But the prices leave ALOT to be desired

92GTA

iTrader: (11)

Another vote for the Accel. I'm running it along with all of my SLP parts.

I've always had problem with my EGR code going off since I installed it though. I'm thinking it's my screw up somewhere or the used intake I got was clogged, which it didn't seem to be. I installed a new EGR at the same time too.

KamikazeIroccy

iTrader: (1)

personaly I was interested in getting the Edelbrock set-up myself. I like it, looks stock but extremely sexy, and with a little porting it's good to 6500 rpm

89 Iroc Z

Um, it will take alot more then a little porting to get it "good to 6500 rpm". No TPI is going to make power that high, even if you port the hell out of it.

KamikazeIroccy

iTrader: (1)

wha about the ones ins SuperRod? I think you should scroll up and check it out.

GOY

Not a chance in hell. 5500 tops and you are DONE! If it was "Good" up there, why would anyone buy a superram?

Fmandan

In the superod shootout that you're refering to the Edelbrock system made(IMO) peak power at 5200-5300rpm not 6500 rpm. They did say it extended power to 6000 rpm but if you look at the graph it dips and goes back up which is not really buidling power.--Thats just how I see it. --With that said, that is better than stock peak power.

GOY

Do you have the combination they used, because I'm really shocked it made peak power above 5 grand! I mean, hell, if it made peak power at 5300 RPM, that's nearly an LS1's power range, with their peaks occuring in the 5400-5600 RPM area.

I'd really have to see a chart to look at that. Do you have a link to that article or scans, or anything?

3.8TransAM

I would bet the First setup would still be doing good there.

More than likely so would my prototype TPI setup I purchased :-)

The runners and base on both of these have some real meat unlike the stock and the aftermarket bases.

Stock base can be ported to hell, and I'm not sure why more people dont do it though.

But if pure rpm for power is the goal, the TPI aint the ticket to go there any way u slice it.

later
Jeremy

Fmandan

https://www.thirdgen.org/techbb2/sho...hreadid=273727

KamikazeIroccy

iTrader: (1)

There you go, my homie got me@KMA.com

GOY

It's tough getting the middle "Transitional" area of the runner in the base smooth, while taking any real meat away. I had to employ my kung fu ninja "Pinky and Thumb" grip the last time I tried...

Fmandan - that article was pretty badly flawed. I don't see anyone running a 236/242, .520/.540 cam in a street 383 that has to pass emissions. The Trickflow heads were the 215cc heads, which isn't exactly common either.

I still maintain that in a regular LTR street machine (215/225 MAX, 200CC intake runner MAX) that the edelbrock setup would die off long before that. On the upside - the low end would probably be significantly more tolerable. Hell, even the stock TPI made 410 HP, and the edelbrock setup only gained 1 ft lb. That test was all messed up, and it was definately a ploy to make the HSR/MiniRam look good. The engine was just not suited for a LTR form of induction.

KamikazeIroccy

iTrader: (1)

well despite all the arugments I'm getting the Edelbrock set-up. I want to maintain the stock look.
What's a good way to change the rear right two spark plugs on my TPI engine also? I cant reach them from up top.

8Mike9

Plugs...go under the car.block it well...hate to see you tugging on a plug while the car is up and have it fall on you

Edelbrock is soooo far from the stock look...but the runners do look cool.

8Mike9

I ported the heck out of my stock base years ago, used some long (6inch) diegrinder bits.

Then went through it with a bottlebrush hone I got from a dairy supply store...IIRC, it was a 2inch hone for milktank lines...the shaft on the hone was like a wrapped coil of wires, made it pretty flexible and easy to get it pretty even.

After all th work I didi and few years later I went with an Accel base...had I known the differences, I'd have popped for the 3bills much earlier

GOY

I had a heck of a time with mine. No matter what I did, I just couldn't get the middle area smooth enough for my tastes. I say congrats to those that can do a good job on them, I wish I knew how.

1989GTATransAm

iTrader: (3)

Attached is the dyno results from my TPI 350. Cam is a ZZ9 clone with 212 degrees on the intake.

GOY

There should really be a sticky made out of hogging out SLP runners.... What bits to use on the center section, how far to port them, etc. It makes for a unique intake... it's almost like enlarging the plenum, but splitting it into 4 really big runners at the same time.

What did you do to the baseplate? Did you just knife edge that, or did you cut some back there as well?

1989GTATransAm

iTrader: (3)

Baseplate was Extrude Honed and the runners were 3/4 circle where they lined up with the baseplate. No knife edge but perhaps it would have been more effective.

GOY

Who did you have do the Extrude Honing? The only place I saw online to do it wanted in the range of $350 for a base, $550 for the base and runners.

1989GTATransAm

iTrader: (3)

I had Extrude Hone do it here in Southern California. Cost me $375. It did turn out real nice with 1.70" ports on the runner side on the intake manifold.

I did not want the intake manifold to flow less than the heads and be a restriction. From other tests I have read the manifold should flow around 275cfm. The heads are around 255cfm.

From the mods I did I know the runners and the plenum are not a restriction. Hehehehe.

GOY

Wow - if you bought the plate new you have about $700 tied up just in the base plate. That's commitment to an idea, now slap a bigger cam in there and see what she really has

Orr89RocZ

iTrader: (20)

i got an Accel superram base.... and i must say i like it but it needs some work.

the base has alot of room for porting and should be done. especially if your trying to get as much rpm and power out of a LTR setup. i'm currently doing mine and am satisfied with the the amount of room i have to open up. i just need to get to the middle transition part of the base to really gain the flow i'm lookin for

1989GTATransAm

iTrader: (3)

Actually I do not have quite that much tied up in the manifold. I bought it around 1991 and did not pay nearly what they sell for today. As to the cam you are not the first one to suggest a larger cam would really benefit my engine and the horsepower output. I'm "thinking" about it. Hehehehe. Might be what is required to get me into the lower 12's.

8Mike9

The Accel base is pretty straight forward, you can look though one port to the other side, and in stock form, see about 60-70% of the other port opening....don't see why it'd be difficult to get to the 'transition" srea...since there really isn't one...aka stock base...been so long snce I had it up in the air, but pretty sure I couldn't see daylight thoufg it...totally night and day difference to the Acccel base's I have...
I guess I could go dig in the pile for a stock base for comparison, might do it tomorrow, just to satisfy my memory

Red Devil

Where exactly did you glean this info from?

Red Devil

I had a big mouth a few times now and can say I've been happy with each one. My preference is also to use the AS&M runners.

GOY

The track.

170-200cc heads are common, 215cc heads are not. If you have a problem with that, get offline, and go to a track and start flexing those exellent communication skills and talk to people running strip/street small blocks.

Edit in: Okay, I'm sorry, I just pulled it out of my @ss just to sound important, and liked hearing myself talk. That's it buddy, you got me.

Orr89RocZ

iTrader: (20)

the only 210cc and up heads i see are on Bigger inch small blocks for the street/strip. those runners are big and want a nice sized cam which means struggling lowend.

i wouldnt mind running trickflow 215 heads on a 415 with a superram. i think that would be nice.

GOY

I agree, if I built something in the 415-430 range (which I understand is being done now in very small number) I would want that size head.

However, for every one of those, there's 3,000 355's running much more suitable heads (no monster ports).

Red Devil

A little dim, or just hung over? I'll make it a little clearere for you...

Where did you get the 215 runner size from?!?

They didn't say R series heads, they just listed them as 23 degree TFS heads. I know, I'm the one who contacted them about the heads.

Unless the 23 degree heads are noted as R series heads, the runner size is 195cc... unless TFS doesn't know their own product too well. Take the attitude elsewhere.

GOY

Out late last night busting a lawyer buying coc. He'll probably sue us for our "Reckless" actions of handcuffing him when he resisted, but hey, that's what you peons are good for, right?

I emailed the mag.

PROCHARGEDTA

I WAS TOLD THAT THE EDELBROCK AND TPIS MANIFOLDS ARE BOTH MADE BY EDELBROCK!

Red Devil

Your own personal crusade against lawyers huh? The mag made no mention of 215cc runners to me, they were rather explicit that they were regular TFS 23 degree heads. I'll have to email them again. That would be a tad shady.

Procharged, they are. TPIS just port matches them and cleans them up a little.

8Mike9

Ya, I guess I got blind or something, was poking around under the hood this weekend, and what did i find? An EGR Vette blockoff plate on my intake.


Musta installed it after a few cold ones and forgot...

So, both the intake I recently got as well as the one I've had for years, both are the same.