THANKS, OK, NOW WHO MAKES A INTAKE (TPI) FOR VORTEC HEADS. AND WOULD THE INTAKE BE ANY BETTER THAN THE STOCK INTAKE.

 

SDPC sells them and yes they are superior to the stock TPI manifold. www.sdpc2000.com

 

I'm pretty sure that the Mini-Ram III is for vortech heads, and the Ramjet intake is for vortech heads too.

 

I just read your other thread. Long tube set-up, that's cool.

As far as I know, the TPIS is the same as the Arizona Speed and Marine casting, just re-badged. The runners are the only "NON" cast aftermarket runners that I know of. That's a good thing.

As for the Edelbrock base, I've heard LOTS of quality issues. The Accell seems OK from what I've read, but neither flow as well as the TPIS/ASM base. Although, any base can be ported, and they all have extra material for porting.

I'm a fan of the Long tube set-up too, and I'm planning on using the Scoggin' Dickey base for the vortechs.

I'm pretty sure all this is accurate.

 

HERE'S ONE FOR YOU, WHY DO SDPC CLAIM WITH MODIFICATIONS THAT THEY CAN GET 375 OR UP TO 375 HP
AND EVERYONE HERE HAS NEVER GOT THAT FROM A TPI.
DO THEY KNOW SOMETHING WE DONT. I NEVER HEARD OF A TPI MAKEING THAT MUCH HP ON THE STREET. CAN SOMEOME CORRECT ME.

JUST THEIR INTAKE IS 50 MORE HP
AND HEAD COMBO IS AT 300 HP
AND MOD'S CAN REACH 375.

HAS ANY ONE DONE THIS.

 

Well I am running 315hp and 470 TQ on a stock TPI so I dont see Y I wouldnt have 375 or more with an after market base/runners and a ported plen.

 

YEA SURE, A WHOLE LOT EASIER WITH A 383. I WANT TO BUILD MY 350 IN THE 91 GTA. WITHOUT A STROKER. I DON'T HEAR OR READ OF THIS WITH SIMPLE SWAP'S, OR LIGHT MOD'S.I WOULD BE HAPPY WITH 325 HP, A CRAP LOAD OF TORQ. I HAVE NOT READ OF 325 HP BEING EASY TO GET. SO YOUR MOTOR TAKES UP THE SLACK.

 

HERE, LET ME START FRESH, SINCE THIS TREAD JUMPED FROM ANOTHER.

91 L98 IF I AM CORRECT THE HP RATEING IS LIKE 245 FOR THIS CAR. GTA.

MY GOAL IS 325,350 HP. WITH OUT A STEALTH RAM, MINI RAM,
I PERFER TO KEEP THE TPI. EVERYONE THAT CLAIMS TO HAVE THIS HP, HAS HAD CHIP WORK OR SOME KIND OF COMPUTER WORK.

SDPC, CLAIMS 300 HP, HEADS AND INTAKE BASE. WITH ALL STOCK
ECM, COMPONENTS.

SO HOW COME EVERYONE IS NOT RACING OUT TO GET THESE PART'S.

WOULD'NT IT BE A LOT MORE EASY TO PUT THESE PARTS, THAN ADD A 100 SHOT. TO GET CLOSE TO 400 HP.

SO SOMEONE HELP ME UNDERSTAND THE TPI, I KNOW THERE NO GOOD AFTER 4200 RPM, BUT I WANT TO RUN LIGHT TO LIGHT,
NOT THE TRACK. WITH ALL THE TORQ, I MAY BE ABLE TO OUT RUN THE LS1, LIGHT TO LIGHT, AND AS WE ALL KNOW, LIGHT TO LIGHT IS SHORT.

 

First of all, if light to light is your goal....it's all in the gears. Well, not all, but you get were I'm going.

As for RPM, my L98 runs well over 4200. I pull to at LEAST 45, but I'm confident that it pulls into the 47 or 48's. Factory tach, it's hard to tell. Either way, you're not breathin' all that great. That's why you add a different intake. I'm 100% with you on keeping the long tube set-up, but for performance sake, it's no more "un-modified" than the Mini-Ram. Sure the MR breathes higher than a large long tube set-up, but modified is modified. No sense buying an intake, and NOT modding the chip/tune of a car because you're trying to keep it unmodified? Doesn't make sense.

No L98 is gonna make 300 with only heads and base. The runners are gonna starve the intake, the exhaust is gonna clog the heads and all the while, the stock cam is going to waste most of the benefit that the heads would give you. Now change the whole intake, add headers and a cam, and now were talking. I think 300 hp would be about right....but again, without a chip, why bother?

Don't get me wrong, I think you're coming at this from a noble point of view. Do what you can with whatcha got, right? I also had this mindset a few years ago. I quickly learned that this mindset is one thing. SLOW.

Oh, and hit the caps lock for us, I feel like you hate me.

 

Hey, you know what?

I just read that SDPC test data. No way. 250 hp with the aluminum/vette heads....I'd buy that, no problem. 300, with just the heads and base? Man, I dunno about that, but I'm interested. I was planning on this combo too, but I wasn't (and still not) expecting all that. 360 with the HOTCAM???? I dunno about all that....I'm curious to see if anyone else jumps in on this.

Notice they have headers on too, but don't mention it.

Also, you mentioned light to light. At what rpm did that set-up make 300hp? As for the Hotcam test, I know the Hotcam can kill the low-end if you just toss it in there.

Also keep in mind that the SDPC vortech heads for the "kit" are worked over too. Not stock vortechs.

 

LOL, I hate no one Yup I notice no one wants to jump on this tread. It might be because this is always talked about, and I came on to late. The way I see it, the intake, runners
from tpis is already a 1,000,00. Then the heads, headers, chip,
there's another 1000.00 or more. I really really want the option to keep my tpi, but I could buy the miniram, headers, magnaflows.
I think I am to confused where to start. Not so much the budget
but the rite combo. I keep thinking of mini ram, headers,(SLP)
cam, chip, pullys, magnaflows. Maybe this would put me close to 350 HP. May be if tpis has a vortec mini ram, I would get the heads to. Thanks for the replys ABUBACA. Let me know what you think.

 

This forum was the right place to start this topic, but it's kinda evolved into a TPI topic, not a "product review" topic, that may be why it's kinda slow in here. Maybe the nice mods could move it?

Here's what I'd recommend:

Right off the bat, you're lookin' at K&N filters, a full tune up, yada yada all that first stuff. I'll bet you've covered that already. An adjustable fuel pressure regulator is good too, and later, it becomes almost essential, so don't forget the small stuff. First big mod would be a set of headers, high flow cat, and a catback system.

I'm not a fan of pullies, but that's neither here nor there...

At this point, you really haven't gone down any specific path towards only one combo. Any combo's gonna need the basics. For that matter, any combo is going to need to breathe better, so you pretty much are going to have to buy an intake. You could hog out your stock stuff, but that's just a temporary fix. As for me, I plan on running a long tube runner (LTR) set-up. I think it looks cool. Bottom line is that for top performance, you're gonna have to get rid of the LTR. I'll sacrifice the power to keep the LTR's good looks...and the stock look at THAT!

I think by the time you've gone that far, you'll have been around long enough to read up on this stuff and you'll have a better understanding of how it all works together, and you can make an educated decision.

I like the Vortec SDPC option because somehow, in my twisted opinion on cars....it seems more "stock" than other options. I guess since there GM heads.

Not to change the subject, but I have the headers/exhaust waiting to go on my 99% stock L98. After that, I'm gonna throw in a torque convertor and gears. After that is when I'll get into the engine.

 

Yea,your right. I will start with the headers, and so on. I think SDPC is who I will go with. First I will find out if TPIS has a vortec mini ram. I will keep you posted. Thanks

 

From the website:

"If you are running the Vortec iron heads, you will need to have them drilled and tapped for the standard SBC bolt pattern,we offer this service for $75/pair, though shipping them may not be worth it, so check some local machine shops for this service. If you have this done then you can order p/n 500-518, but you must specify you are running Vortec iron heads, and we will match the ports accordingly."



So yeah, they do...,kinda.

 

LOL, hopefullly the car will sell on e-bay . If not, I will work the motor. I will keep it as a collector car. For what I understand, this is a rare car.