Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine
Register Forgot Password?

Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by Weld Racing
Click Here

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 10-28-2007, 11:04 AM   #1
Member
 
Join Date: Oct 2004
Location: moline, il
Posts: 153
Car: 82 z28
Engine: 350
Transmission: TH350
Axle/Gears: 10 bolt 3.73

Classifieds Rating: (2)
Send a message via AIM to wiseman9986 Send a message via Yahoo to wiseman9986
383 stroker what compression ratio for pump gas

im building a 383 stroker with 6" rods with this kit http://cgi.ebay.com/ebaymotors/ws/eB...155158473&rd=1
and i want to run on pump what would be the best compression ratio im going to be using edelebrock pro flo 3500 injection and im trying to decide on a trick flow head combo
wiseman9986 is offline vBGarage Page   Reply With Quote
Old 10-28-2007, 11:22 AM   #2
Supreme Member
 
Join Date: Oct 2006
Posts: 1,974
Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst

Classifieds Rating: (0)
Re: 383 stroker what compression ratio for pump gas

10.5:1 for the street 11:1 if it will never see the street
SpitotRs305 is offline vBGarage Page   Reply With Quote
Old 10-28-2007, 01:51 PM   #3
Junior Member
 
lbman0007's Avatar
 
Join Date: Jun 2007
Location: Baker, Louisiana
Posts: 30
Car: 1986 Chev Camaro
Engine: 350
Transmission: Th350
Axle/Gears: 10 bolt 3.23 posi

Classifieds Rating: (0)
Re: 383 stroker what compression ratio for pump gas

what type of octane fuel do you need for 11:6.1 ?
lbman0007 is offline vBGarage Page   Reply With Quote
Old 10-28-2007, 01:59 PM   #4
Moderator
 
AlkyIROC's Avatar
 
Join Date: Jul 1999
Location: 51N 114W, 3500'
Posts: 15,558
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86

Classifieds Rating: (0)

Re: 383 stroker what compression ratio for pump gas

As much as needed to eliminate detonation under load. There is no magic number based on a compression ratio since each engine is different.

Some engines can run 92 octane on 12:1, some engines can only do it at 10:1.
__________________
Hardtail Racing
All engine, no power adders! Bests: 9.029@150.45 (at altitude)
Theoretical sea level performance 8.623@157.05
AlkyIROC is offline vBGarage Page   Reply With Quote
Old 10-28-2007, 03:36 PM   #5
Member
 
Join Date: Oct 2004
Location: moline, il
Posts: 153
Car: 82 z28
Engine: 350
Transmission: TH350
Axle/Gears: 10 bolt 3.73

Classifieds Rating: (2)
Send a message via AIM to wiseman9986 Send a message via Yahoo to wiseman9986
Re: 383 stroker what compression ratio for pump gas

so would it be best to go for 10.2:1 or 9.6:1 for this it will be a daily driver i dont want to go higher than 93 octane but i dont want any chance of detonation
wiseman9986 is offline vBGarage Page   Reply With Quote
Old 10-28-2007, 03:41 PM   #6
Senior Member
 
ryan91rs's Avatar
 
Join Date: Sep 2007
Location: New Philadelphia/ Canton OH
Posts: 914
Car: 1991 RS, 84 El Camino conquista RIP
Engine: 5.0 (for now)
Transmission: 4L60
Axle/Gears: 2.xx torsen limited slip & 3.42 ope

Classifieds Rating: (1)
Send a message via AIM to ryan91rs
Re: 383 stroker what compression ratio for pump gas

9.6:1 is better. the lower the compression usually makes it burn lower octane. best bet it to ask to company you got the kit from or the shop doing it for you.
ryan91rs is offline vBGarage Page   Reply With Quote
Old 10-28-2007, 03:41 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > Tech / General Engine

Tags
111, 1161, 121, 383, burn, compression, gas, high, lot, pistons, pump, ratio, ratios, run, street, stroker
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 10:40 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details