Guys
For those that are thinking of rebuilding their L98s and LB9s.... the Magazine GMHTP is doing a DETAILED write up on the comparisons, informational, and blueprinted buildup of a TPI car that might come in handy for those that want to make serious gains in a street drivable car. Yes..some of the history and background of the TPI production is a rehash of what we already know...but the technical detail of the article goes beyond what I have read on other sources... I enjoyed the article and they really drilled down details...most notably the engineering pit falls and bad planning that has gone into the run of the mill rebuilding of these engines. You'l find why they choose cast iron heads over alluminum heads..interesting.

Highly recommended www.gmhightechperformance.com

 

Yea, they do sooo well with the thirdgens that I might forget to **** on the things when I see them. How slow did they get that project to run two years ago again?!? After how much cash?

 

I think their write ups are complete bull s*** b/c like most of the shows out there, they use sponsors parts and not the parts that actually produce the numbers everyone wants...

 

Yep. GMHightech is like a comic book, IMO. No more subscription for me!

 

GMHTP has been pretty sh!tty for 3rd gens...I quit taking them seriously when "Thunder Chicken" or what ever it was with a 396 had a tough time breaking out of the 13's....my favorite Mag is Car Craft....those guys rule.


350Z

 

I read the article, and they will pretty much change the whole TPI setup. By lengthening the rod length, making it a 355, and most likely going with some aftermarket TPI setup.

WE ALREADY KNOW THIS GMHTP!!!! Thought you were gonna do something original and innovative for us, not something we have already done. JEEZ!!

 

Yes, BigWhite. Thats what I was thinking all along. I guess it will be just another TPI article, to stimulate the younger generation readers, that are just getting into hotrodding EFI.

 

LOL
Damn..you guys are a hard sell!!!

I never claimed that the 3 part article was the "messiah" of the TPI universe. Your killing me

What I do know...is that the TPI set up does have CERTAIN limitations within it's design and articles will continue expound on that fact (regardless of how upset it makes us TPI enthusiasts). Facts are facts. Nevertheless...I can think of 4 people in particular that thought that they knew their stuff and they built a TPI engine that didn't run any better HP or reliability wise...then the one that they were replacing.

Come to think of it... I might just throw a Buick Turbo V-6 under the hood of my Iroc and blow the door off ANY TPI engine in existance.

 

??? I got moderated! Ok, would saying I'd rather wipe my business end with that rag rather than read the drivel be better?!? Shame too because it had such potential.

70FB, why not have the rag put up some cash for each of us and let us see what can really be done with a tuned runner port injection set-up. Some people are starting to just knock on the door of realization in that regard. Parameters to boot, pick race, road, DD etc. I think you and many of your readers would be rather surprised at some of the results.

 

Personally I like the TPI engine. Just today while heading for lunch today..one of the guys (who knows a little) told me about a 92 Z-28 L-98 that is advertised on the companies intranet for sale. The first thing I thought and SAID out loud is

WOW... 245 HP... BUT MORE IMPORTANTLY 345+ lbs of Torque. I said it directly in the face of the 2nd guy who thinks that these GM vehicles are JUNK... I told him that I would take the 245 hp Z-28 in a street race against his "wannabe" 1999 BMW M3 with it's 260 HP and ***** 260 lbs of torque... I said it was a NO BRAINER which would prevail in a REAL RACE!!!! HE DIDN"T LIKE IT.

He also didn't like the fact that my 89 TURBO TRANS AM will eat almost ANY M3 with it's mild mods.

HE DOESN'T LIKE THE FACT THAT MY 1970 FIREBIRD AND ITS 380 LBS OF TORQUE ALMOST OFF IDLE WILL SMOKE HIS *** DOWN THE LINE. I ****ed with him in that car when he had his pretty boy wannabe M3 on the line. With the pickup of that long stroke block...THERE'S NO WAY IN HELL he would have even had a chance. THAT'S a fact. He's an idiot. Sorry..just venting.. Some people think they know what's up and don't. Hammer time baby A car without Torque off idle...is as worthless IMO as a nut sack on a priest. I would rather have fun in my LT1 with it's gobs of tranny mount breaking torque..then the mighty LS1 that only comes on it's own over 80. That's not fun for me.

 

The US version of the '99 M3 is rated at 240 hp....not 260. Even w/that rating of 5 hp lower than a Z-28, and 225 lb-ft of torque(not a "***** 260"), the M still runs a 14.3 @ 98 mph. That's a magazine driver granny shifting. I'd take the M and race a stock Z in the 1/4, and I'd win.

Uh... the LS1 makes 300 lb-ft at 1000 RPM. Something a stock LT1 could only dream of. The LS1 engine is quite capable below "80".

 

Bull****
That M car is a wannabe. I'd stick with the 1992 L98 in a street race. Just having the auto VS and the gear shifting prowess of the driver.... there's a lot of VARIABILTY here--that's a No Brainer. Better stick with the Mag times bro.
14.3 with granny driving.. LOL. I went for a ride with "Granny" driving and it wasn't anywhere near 14.3. You're killing me.

As for the LS1... it's a known that the LT1 A4s are quicker (torque) then the 6 spds LS1s to 70-80 ...then the LS1s come into their own... Personally..I am not into cars that are geared that way. I have yet to lose to a LS1 6spd that is close to stock... to my close to stock Turbo Trans Am. 3 Car lengths to 70 is a bit much to make up in a street race. Sorry bro. Real world here. The Mighty LS1 isn't as unbeatable as some people would like us to believe. Their quick... but again...I have one of the baddest T/As out there. As for the LT only "dreaming" of LS1 power... it comes down to heads.

 

no matter how you cut it, our gobs of torque dont help us out once we're cruising at highway speed..l98's are dogs once you're up there. i'll take an m6 ls1.

 

what you dont like to be taken by N/A four bangers? lol

 

lol that is correct

 

I'm not a big fan of the LS1 but you guys all talk about torque (TPI intake)...and how great it is for street racing.....I'll agree that a TPI car has more grunt in the lower RPM ranges....BUT the ONLY time your at low RPMs in any race is right off the line...after that...even in an auto car I doubt RPMs go below 4K...and at that those RPM ranges the LS1 has the advantage over the TPI and LT1's...stock for stock of course........

 

1. "Wannabe" or not, I'd take the M3 and I'd beat you. Sorry but that's life. (.)
2. The LS1 makes more torque at every RPM than the LT1. If the LS1 is slower, then is due to the gearing, driver, or set up, and has nothing to do w/the engine, which is what we were talking about. I was also talking about LS1's vs LT1's since you erroneously compared the two above...not modded TTA's, as you're now reffereing to. Not sure how TTA's got into this thread which is about TPI.

You'll just have to let me know how ignornace is.

 

[QUOTE]Originally posted by 1970Firebird
[B]Bull****


but again...I have one of the baddest T/As out there.

Can you please define BADDEST?

 

I know of several close to stock, or "stock" LS1 6 speed cars that can more than handle a TPI motored car any day of the week. Hell my best friend waxed another friends 91GTA w/ headers and 100shot by 4-5 cars up to 100. That ain't saying much for the mighty TPI compared to an LS1.

Whatever LS1s you are seeing must be embarassed to live life as an "LS1."

 

Doesnt take much to get an LS1 into the mid 12s.

 

My TPI car will beat most Gen 4 cars at California Raceway where I run and run up against. Very, very few with better times. With TPI I can get them good off the line and then hold on until the end.

 

[QUOTE]Originally posted by brutalform
[B]Any Turbo Buick is capable of mid/low 11s on stock block internals.. that's what I mean by Bad ***. The TTA was thrown in the equation as an "equalizer" to make my point that the "mighty" LS1 isn't unbeatable. Not all LS1s are equal. Some are mid to low 13s capable in stock trim..while others are barely into the 13s. It doesn't take as much effort to get an LT1 to match LS1 numbers as some would lead everyone to believe... (I guess if you never worked on cars...you wouldn't have a clue of what I am talking about).

LS1 A4s post better 60 ft times then the 6 spds. That's a no brainer.

 

Chris
At 100 shot...your L98 must really have some tuning issues if you lost to a stock LS1.

 

BTW I never said that a stock 92 L98 map car would beat a LS1 in a straight out race.. or a 1/4 mile... or run better trap speeds. I was meaning 60 ft times. Most 6spd LS1s will not humiliate a 92 L98 in the 60 footer.. with it's TPI and 3:06 tranny raitio. the claims that the the stock LS1 6 spd is lightening off the line isn't correct. The HUGE disparity doesn't add up to what I have seen in real world. Even when my TTA was running stock boost (16 1/2 lbs)...on 92 octane... the 5 LS1 (3 being 6 spds with lids and exhaust work)... didn't do to well to 100 mph. Oh..I know.. it must have been the drivers wink.

 

Why does it say Weiand stealth ram on the add on the linked page?