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Breaking in new 347 with mass air

  • Thread starter Thread starter Swade214
  • Start date Start date Apr 13, 2004
S

Swade214

Member
Mar 18, 2003
30
1
9
Upstate NY
Apr 13, 2004
#1
  • Apr 13, 2004
  • #1
I have a A9l computer to run my new engine. My question is will the computer make the engine surge while it learning all the parts? I am concerned about breaking the cam in with a motor running erratic or will it run smooth. Thanks
 

86Cobra

Founding Member
Jun 6, 2000
2,064
1
0
Phoenix, AZ
Apr 13, 2004
#2
  • Apr 13, 2004
  • #2
Are you running a flat tappet cam? Roller cams don't need to be broken in.
 

blown5.0

Founding Member
Sep 7, 1999
1,170
4
39
Central NJ
Apr 13, 2004
#3
  • Apr 13, 2004
  • #3
yeh roller cams dont need no break in. start it up, set the timing, and kit it in the pants.
 
S

SPEED FREAK

Founding Member
Aug 7, 2000
1,448
0
0
Regina, SK.
Apr 13, 2004
#4
  • Apr 13, 2004
  • #4
I hate breaking in cams. But I am sure I dont hate it near as much as my neighbors do . mmmm 365 ci motor with open 3/4" hooker long tubes and no exhaust running at 2500 RPM for 20 minutes straight. I bet they loved me for it.
 
S

Swade214

Member
Mar 18, 2003
30
1
9
Upstate NY
Apr 13, 2004
#5
  • Apr 13, 2004
  • #5
I will be running a roller cam so no problem there.How about the way it will start and run at first.Will it have to learn the new parts?
 
9

90Notch

Founding Member
Jan 31, 2002
1,046
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0
Westwood, MA & yes it's killing me that I'm no
Apr 13, 2004
#6
  • Apr 13, 2004
  • #6
Yes it will fire right up, run decent then start learning the setup. Where it's not going to learn and you need to be carefull is under WOT because the O2 sensors are not adjusting a/f during this and a 347 will definitely be running lean. When I broke my 331 in I used stock A9L program then starting tuning it with EEC tuner. You will need either a chip or some form computer tuning for that motor.
 

cougar_68

Founding Member
Jun 6, 2001
849
0
0
Garrett, IN
Apr 13, 2004
#7
  • Apr 13, 2004
  • #7
That is good to know. Do you have to have chips custom burnt at a shope or can you call some place and tell them your setup? I don't know of many "speed shops" around me. (Northeast Indiana)
 
9

90Notch

Founding Member
Jan 31, 2002
1,046
0
0
Westwood, MA & yes it's killing me that I'm no
Apr 14, 2004
#8
  • Apr 14, 2004
  • #8
I don't know of many "speed shops" around me.
Click to expand...

Look for shop that tunes the car on a dyno, I'm not familiar with that area but I'm sure there are some that can. Do not get a mail order chip. Personally I would look into buying something like a TwEECer and learning how to tune it yourself so if you make any changes you can adjust the tune rather spending $$ to have a new chip burnt.
 
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