I was wondering if any of you picked up the new Chevy High Performance (I know it's kind of a ****ty mag) and saw the 350 TPI they built. It thought it was pretty impressive because I've been told by soooo many its hard to get a TPI car in the low/mid 12's. The article pretty much lists every part and explains the best way to utilieze the TPI's ponies. It was a pretty good blue print to build a 12.3 all motor car w/out changing to one of those expenisive after market fuel injection systems. They also used L98 heads ported and polished instead of going with aftermarkets. Another bonus is it's still emmisions legal!!! If anyone out there decides to build the motor out of this mag, or has another low/mid 12 sec TPI recipe please email me at Cruising270@hotmail.com I've been working so much lately I rarely get to check this board, so I'd apritiate the e-mail. Hope this article can help any of you looking to build a TPI motor up.

 

how much was it?

 

Don't get your hopes up if you try to copy the magazine article. They used L98 aluminum heads, had an aftermarket intake plus a lot of other stuff that is barely mentioned in the article.

If you try to build an engine with what they mention in the article don't be surprised if you car only does mid to high 13's.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

 

To add to what Stephen said - The L98 heads received CNC porting, valves, springs,and machine work from CNC Cylinder Heads. They get $1300 - $1600 (depending on the springs locks and retainers) to set up the customer supplied "bare" cylinder heads. Without this type or similar porting on the heads, I'd think most people's car would have a hard time running 13.0s,, even applying all the "tricks" that were not mentioned.

 

Damn I shoulda know beter than to believe or follow a Chevy High Performance article. I'll stick to car craft.

 

If you want more info on the 12 second camaro build up, go to the magazine article section of this site. It is the HardRock camaro build up part 4 part.

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92Z28
89GTA

 

Is possible though. A local guy runs a 12.2 on street tires (granted 315's) in a 92 1LE with long tube runner setup. No nitrous/SC. Oh, and its emissions legal through dual cats. Wouldn't have believed it myself if hadn't seen it. Awesome car.

Matt383

 

Forgot to mention, I think he said it was the former Arizona Speed & Marine project car.

 

It is not hard to beleave they ran 12.3 with that car at all I have seen many 12 second long tube cars. And yes you do have to spend money to get to that point, but spending money on the correct heads, cam, intake, and chip tuning is still a heck of alot cheaper than almost any other 12 second car in the world.

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1991 Z28 ZZ4 with LPE superram base, SLP runners, LPE 58mm T-body,Random Technology ramair,TES headers,24#svo injectors,ZEX nitrous,Walbro 255lph f-pump,Accel AFPR,Random Technology catback,!cats,and mutch more.