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Author
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Topic: new computer for 331 stroker????
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p5.0
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Member # 6160
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posted
 
 
ok im installing a 331 in my sn95 will i need to get a new computer or not. what will i need to do? what kind of problems will i run into if the block is an 89 into my 94. (dont think there should be any) any tips will help thanks. want to pull old motor and drop the other the same day. tahnks again. o yea 331 w/ e303 edlebrock heads/ 24lb injectors/ cold air/ gt 40 intake/ 190 fuel/ equal length headers and off road h/ 65 mm tb and 4.10 gears. its a stock t5 tranny, let me know any info thanks
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RIP 91 300zx
sold 90 300zx
05 GSXR sold
94 gt 331 sold
01 lightning
03 ninja 636 sold
67 mustang coupe project
03 R1 sold
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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JohnB
Tech Moderator
Member # 969
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posted
The 94 computer isn't going to like the cam. You *may* need a tune to get it to idle when you want it to.
The year of the block doesn't matter, but the accessory drive and timing cover are different between 89 and 94 models, so if they are present you will need to swap over your 89 model items. 1994 headers and intake are different as well.
Make sure you have the correct flywheel and balancer for the 331 setup.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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p5.0
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Member # 6160
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posted
yea the headers from my 94 and the timing cover and water pump and all that other stuff are going to be swaped over, my flywheel is 28 oz and the balancer is 28 oz. anything else that i might run into
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RIP 91 300zx
sold 90 300zx
05 GSXR sold
94 gt 331 sold
01 lightning
03 ninja 636 sold
67 mustang coupe project
03 R1 sold
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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92stangLX
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Member # 3252
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posted
You will also need a new MAF that is calibrated for the 24lber's and an adjustable fuel pressure regulator.
The car should run after the swap. It will require some fine tuning (ie fuel pressure, idle, timing, etc) to dial it in.
If for some reason it doesn't run right after that you may want to consider getting a chip done.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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p5.0
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Member # 6160
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posted
got the maf calibrated for the 24lb injectors and got a regulator. about the chip part. was wondering if i get a chip will it by pass me having to get it tuned. or do i got to get it tuned prior to installing a chip? and is there anything else i might run into
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RIP 91 300zx
sold 90 300zx
05 GSXR sold
94 gt 331 sold
01 lightning
03 ninja 636 sold
67 mustang coupe project
03 R1 sold
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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92stangLX
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Member # 3252
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posted
quote:
Originally posted by p5.0:
got the maf calibrated for the 24lb injectors and got a regulator. about the chip part. was wondering if i get a chip will it by pass me having to get it tuned. or do i got to get it tuned prior to installing a chip? and is there anything else i might run into
If you get a chip you will need to get it tuned on a dyno. If for some reason your car won't run right after the install the tuner can burn you a "base" chip that has params for things like the cam, injectors, etc. However you will need to go to the dyno and have it dialed in.
Mail order chips are no good IMO.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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BCINGUU
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Member # 2397
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posted
Depends on which chip you get. Some chips are for self-tuners who like to dick around with their setup, others are for professionals only. You can decide which to get based on your own inclination.
You will probably care more about part throttle tuning with that setup than WOT, at least after a point. Part throttle tuning is more challenging that WOT tuning, and not too many tuners deal with it.
Either way, a chip may not be absolutely required for your setup, but you'll get a lot more out of your investment if you chip it.
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93 Cobra #4563 347ci 12.0@118 505rwhp 524tq
90 GT "Saleen Cobra" style convertible 347ci
67 GT "Eleanor" style coupe 347ci
Posts: 1425 | From: San Jose, CA | Registered: Jan 2003
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p5.0
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Member # 6160
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posted
ok so what chips are recomended.? i was gonna go with the one on summit mvc-7777. the one were you tell em what you got and they build a custom chip. is there any other ones out there that any one who had experience with and liked the outcome. let me know. thanks. o yea anyone now who will tune my ride in the south bay.
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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SmokinLX
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Member # 1684
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posted
Sct chip and get it tuned if the car is'nt running good after install. If it's running fine then You might want to get in on the next mustang tune day that pop's up which usually cost's around 70 buck's & will get You 3 pull's with air fuel check, or just spend about a hundred buck's for an hour of dyno time to check the air fuel ratio at a local dyno shop.
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Dont claim power if ya cant mile per hour. 10 second AOD
Posts: 4388 | From: East Bay | Registered: Aug 2002
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