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:
Sponsored by: CARiD

Thoughts/opinions on a 383 build

Thread Tools
 
Search this Thread
 
Old Jun 14, 2008 | 03:54 PM
  #1  
Tony_B972's Avatar
Thread Starter
Junior Member
iTrader: (1)
 
Joined: May 2008
Posts: 19
Likes: 0
From: Boston
Car: 86 IROC
Engine: 383 (in progress)
Transmission: tko 600
Thoughts/opinions on a 383 build

I know these are dumb questions but humor me pls, here's what i got so far forged crank/rods(5.7) afr 195 elimintors (68cc i think), miniram w/ direct port nitrous 150-200 shot in thoery, hydro roller cam dont have numbers yet, and srp pistons -16cc all run off a f.a.s.t efi system. Now my first question is about the c/r will that set up i think ill be at 9.6/1 which seems a little low so i was going to change the pistons and bump the c/r up but im getting mixed opinios about how high i can go and still run safly on pump gas. Im thinking of switching to a -5cc piston which would bring me to something like 10.6, is that too high for 93octane? Also a random one can/should i use a bigger oil pan?
Reply
Old Jun 14, 2008 | 03:59 PM
  #2  
mcbchild's Avatar
Member
iTrader: (1)
 
Joined: Nov 2003
Posts: 412
Likes: 1
From: TX
Car: 1984 Firebird SE
Engine: 388 sbc, Brodix Track 1s
Transmission: turbo 350 transmission
Axle/Gears: 4.10 gears
Re: Thoughts/opinions on a 383 build

C/R is good for pump gas, may have to add some 104+ octane boost depending on the timing used and definitely you want a bigger oil pan to have plenty in the oil pick-up on turns and hard launches.
Reply
Old Jun 14, 2008 | 04:08 PM
  #3  
Tony_B972's Avatar
Thread Starter
Junior Member
iTrader: (1)
 
Joined: May 2008
Posts: 19
Likes: 0
From: Boston
Car: 86 IROC
Engine: 383 (in progress)
Transmission: tko 600
Re: Thoughts/opinions on a 383 build

will one fit w/out mods on a 86 and does octane boost really work?
Reply
Old Jun 14, 2008 | 04:35 PM
  #4  
SpitotRs305's Avatar
Supreme Member
 
Joined: Oct 2006
Posts: 1,974
Likes: 0
Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: Thoughts/opinions on a 383 build

octane boost works in theory not in practice as it MIGHT raise your octane 1 true point from 93-94 type of deal not worth it... if it was detonating on 93 it will probably detonate on 94
Reply
Old Jun 14, 2008 | 09:11 PM
  #5  
Tony_B972's Avatar
Thread Starter
Junior Member
iTrader: (1)
 
Joined: May 2008
Posts: 19
Likes: 0
From: Boston
Car: 86 IROC
Engine: 383 (in progress)
Transmission: tko 600
Re: Thoughts/opinions on a 383 build

bet ur right
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
UltRoadWarrior9
Tech / General Engine
336
Apr 28, 2020 10:39 PM
83RDRACR
Exhaust
5
Mar 26, 2016 08:13 PM
Jorlain
Tech / General Engine
6
Oct 8, 2015 01:57 AM
Mongoose462ci
North East Region
0
Sep 16, 2015 11:46 PM




All times are GMT -5. The time now is 02:26 AM.