Notices
C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

What year Vettes had aluminum pistons?

 
Old 07-15-2001, 09:57 PM
  #1  
BillRed85
CF Senior Member
Thread Starter
 
Member Since: Nov 1999
Location: Plaistow NH
Posts: 434
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Oh my.. I have created a race car.

The 383/DFI/SuperRam fired today!!!! All I can say is.... daaaaaym. There is no way I can get a sticker, the car is just to much.

I know my timing is off and fuel is WAY off, but it starts and idles, and revs pretty damn good.

Where do I start?!? It won't idle below 1400 and the TPS is at 0% how do I bring it down? less fuel? less air? Man so many questions but I'm just glad it runs!!

Anyways, had to tell someone!

Thanks for all the help!

Bill
BillRed85 is offline  
Old 07-18-2001, 03:47 PM
  #2  
onedef92
CF Senior Member
 
onedef92's Avatar
 
Member Since: Oct 2000
Location: Louisville KY
Posts: 96,444
Thanks: 0
Thanked 2 Times in 2 Posts
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
Default

Wasn't it the 1969 ZL-1 Zora exotic?

The ZL1 engine was as exotic of an engine that could have ever been developed given the parameters Chevrolet had to work with 30 plus years ago.

The all aluminum 427 ZL1 was patterned after the cast iron 427 L88, but it wasn't merely just a change of the block casting material.

The ZL1 had beefier bearing journal web areas, and external web braces at places such as the front of the block where the intake manifold bolts down.

There are extra bolt pads inside the lifter valley under the intake manifold to allow for extra head bolts. The aluminum block had iron cylinder sleeves, capability for dry sump oil system and optional gear drive for the camshaft.

The ZL1 camshaft was a higher lift and different duration than the L88.

The ZL1 motor was developed by Chevrolet with the intended purpose of racing. Therefore it was necessary for Chevrolet to produce it as a regular production motor to qualify it.

But it is likely that without the efforts of Zora Duntov the engine would never have made it to production. Chevrolet produced the ZL1 motor as a RPO (Regular Production Order) option in 1969 only, and only available as a RPO option on the Corvette.

Additionally there were 1969 ZL1 Camaros produced; but only as COPO (Central office Production Order) orders.


onedef92 is offline  
Old 07-18-2001, 03:50 PM
  #3  
scorp508
CF Senior Member
 
scorp508's Avatar
 
Member Since: Mar 2000
Location: MA
Posts: 83,143
Thanked 5 Times in 5 Posts
Default

Originally Posted by BillRed85:
[B
......and the TPS is at 0%[/B][/color]
How'd you manage that one? [img]http]//www.corvetteforum.cc/ubb/smile.gif[/img] That should be easily adjustable to 0.54-0.68 at idle. It's just 2 torx screws.
scorp508 is offline  
Old 07-18-2001, 05:50 PM
  #4  
CravinMorehead
Junior Member
 
Member Since: Jun 2001
Location: Auburn, MI
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
Default

The sooner you fall behind, the more time you have to catch up.
CravinMorehead is offline  
Old 07-26-2001, 02:13 AM
  #5  
BillRed85
CF Senior Member
Thread Starter
 
Member Since: Nov 1999
Location: Plaistow NH
Posts: 434
Thanks: 0
Thanked 0 Times in 0 Posts
Default

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:[/color]<HR><font face="Verdana, Arial" size="2">How'd you manage that one? That should be easily adjustable to 0.54-0.68 at idle. It's just 2 torx screws. [/color][/QUOTE]

Wow someone replied!! hehe

nope the TPS was right @ 0% (thats DFI talk for .54v)

Bill
BillRed85 is offline  
Old 07-26-2001, 02:29 AM
  #6  
hippy
CF Senior Member
 
hippy's Avatar
 
Member Since: May 2000
Posts: 7,010
Thanks: 0
Thanked 8 Times in 7 Posts
Default

I believe .68 will set a code. Wouldn't go higher than .63. Do the procedure for setting the IAC where the IAC is disconnected and the only thing that controls idle is the set screw. This would be the first step for ya.
hippy is offline  

Thread Tools
Search this Thread
Quick Reply: What year Vettes had aluminum pistons?


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: