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ATTN: 351 Guru's.... need help

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Old 03-26-2007, 08:20 PM
  #1  
ahittz24
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Default ATTN: 351 Guru's.... need help

ok, my 302 has had it, when it gets warm the oil press needle on the gauge drops off at idle and then picks back up when its it reved.... It also has a broken headbolt, so I found a 351 from an 83 f150 that is carbed and I am gonna rebuild it (maybe a 408, havent decided yet), get a lightning lower intake manifold so I can still use my cobra upper intake, swap it over to fuel injected, put some RHS Pro Action 200cc heads on it, and possibly run nitrous on it.

Here are my questions...

If I swap over to EFI, I should still be able to run my A9L ECU on this right?

I know how to calculate Fuel Injectors, I have #24 right now with a C&L MAF and that is only good top around 350 HP right? I want 400-425 so 30# should do the trick right?

I know this isnt a roller motor, Does anyone make a retro fit roller cam setup for this motor? If so, where do I find it? <--- Info that is needed the most

I know about the oil pan and pickup tube, and I am gonna swap to aAJE Racingk-member too, but is there anything else I am forgeting?
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Old 03-26-2007, 09:20 PM
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r.barn
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Default RE: ATTN: 351 Guru's.... need help

200cc RHS's are good for a 351W ......... just ordered some myself.

for a 408W you will need the 215 RHS's or AFR 205's and it will make over
500hp or 400rwhp

You can use you A9L computer with an SCT tune, but might take some
time and head scratching to get it just right.
I'm about to go with the AEM plug n play system myself, after all the
back and forth dyno tune sessions getting everything just right wish
I had gotten one to start with.

You can use roller cams if you get the $400-500 linked covnersion roller lifters.

my 351W runs ok on 24's but gets real lean at upper rpms
30-36's would be good.

you need couple of other small things for swap like new flywheel
and spacer for crank pulley to line up and a/c - p/s bracket and 351 dizzy
and lifted hood for clearance ( took a 4" to clear my Trickflow EFI intake )
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Old 03-26-2007, 09:41 PM
  #3  
AdderMk2
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Default RE: ATTN: 351 Guru's.... need help

$1600 for an AEM r.barn???? why not a megasquirt?


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Old 03-26-2007, 09:52 PM
  #4  
r.barn
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Default RE: ATTN: 351 Guru's.... need help

ORIGINAL: AdderMk2

$1600 for an AEM r.barn???? why not a megasquirt?
AEM does SOOOOOOO MUCH more, and no need for assembly or "adaptor" boards

I'm going to drop my entire MAF system with it and go to BAP sensor and dual wide bands.
It will controll the boost level for my turbo thats about to go on
Data log
Download predone tune maps from other users on their web site.
dual rev limiters
acceleration controlled traction control.
more and more

very nice system that plugs right into factory harness, sky is the limit on
adjustable parameters.
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Old 03-26-2007, 10:03 PM
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AdderMk2
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Default RE: ATTN: 351 Guru's.... need help

hrm... funny.. Megasquirt does all that as well


Looks like you shouldnt talk crap about systems you know nothing about
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Old 03-26-2007, 10:28 PM
  #6  
89Ford
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Default RE: ATTN: 351 Guru's.... need help

Adder since you know so much about megasquirt maybe you can compare and contrast the 2, start another thread if neccesary but I would like to see why one is better than the other
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Old 03-26-2007, 10:30 PM
  #7  
AdderMk2
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Default RE: ATTN: 351 Guru's.... need help

$500 > $1600

nuf said
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Old 03-26-2007, 10:47 PM
  #8  
r.barn
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Default RE: ATTN: 351 Guru's.... need help

ORIGINAL: AdderMk2

hrm... funny.. Megasquirt does all that as well


Looks like you shouldnt talk crap about systems you know nothing about
Dont remember saying anything bad, but if you want me to .....................

How many hours putting it together did it take???????????
How many wire splices and "adaptor" boards did it take?????????
What kind of warranty does it come with?????????
How many aux. inputs does it have????????
Will it monitor EGT's??????????
How many aux outputs does it have ??????????? AEM has 16!!!!!!
Will it control boost????????
Will it control nitrous?????????
Soft cut rev limter?????????
Knock sensor provision????????
Will it auto fuel map with wide band O2's?????


You're wack, AEM does twice as much and is twice as expandable
to control all kinds systems from a/c and fan to boost or nitrous with
all kinds of triggers from TPS to rpm's

Yes, it cost a lot but its not some do it youself Hobby kit either.
It installs in 2mins and comes with 1 year warranty.

"MEGASQUIRT -- YOU BUILD IT YOURSELF" ......... enuf said ...............
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Old 03-26-2007, 10:58 PM
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89Ford
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Default RE: ATTN: 351 Guru's.... need help

ORIGINAL: r.barn

ORIGINAL: AdderMk2

hrm... funny.. Megasquirt does all that as well


Looks like you shouldnt talk crap about systems you know nothing about
Dont remember saying anything bad, but if you want me to .....................

How many hours putting it together did it take???????????
How many wire splices and "adaptor" boards did it take?????????
What kind of warranty does it come with?????????
How many aux. inputs does it have????????
Will it monitor EGT's??????????
How many aux outputs does it have ??????????? AEM has 16!!!!!!
Will it control boost????????
Will it control nitrous?????????
Soft cut rev limter?????????
Knock sensor provision????????
Will it auto fuel map with wide band O2's?????


You're wack, AEM does twice as much and is twice as expandable
to control all kinds systems from a/c and fan to boost or nitrous with
all kinds of triggers from TPS to rpm's

Yes, it cost a lot but its not some do it youself Hobby kit either.
It installs in 2mins and comes with 1 year warranty.

"MEGASQUIRT -- YOU BUILD IT YOURSELF" ......... enuf said ...............
wow thats the kind of description i was looking for....but im still torn here

The price is high, and you dont get that self accomplishment feeling and you dont really learn how it actually works by not being the one to put it together
however it does offer alot more and the 1 year warranty is a plus
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Old 03-26-2007, 10:58 PM
  #10  
AdderMk2
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Default RE: ATTN: 351 Guru's.... need help

Megasquirt N' Spark Extra

Features Follow links for more info 12x12 fuel tables
12x12 spark tables

DualTable code
Roger Enns' injector staging code
Rev limiter
Overboost protection
Mappable Air:Fuel Ratio target for use with wideband O2
Coolant temp timing advance
Inlet temp timing retard

MAPdot accel/decel enrichment
Anti-rev / Traction Control feature
Over-run fuel cut
Afterstart Enrichments

Cranking /Priming settings

Hybrid Alpha-N
Air Density Correction
RPM Based Accel Enrichment

All ignition options require some mechanical or electrical work
Ignition control options:
. No ignition (fuel only)
. Distributor for even-fire 2 stroke 1,2,3,4 cyl and
even-fire 4 stroke 1,2,3,4,5,6,8,10,12,16 cyl
. Ford EDIS
. Dual Ford EDIS (e.g. 2 EDIS4 modules on a V8) TEST
. Dodge Neon crank decoder
. Ford TFI
. GM 7 pin HEI
. Toothed wheel decoder
. Dual wheel decoder/2nd trigger
. GM DIS
. Buick C3I
. Oddfire wheel decoder ALPHA TEST Hardware changes needed for: Switchable tables
Boost control TEST
Water injection control
Dual EGO sensor support
Shift Lights
Launch Control/Flat shift
Realtime Barometric Correction Outputs 1, 2, 3 and 4
Knock sensor input
PWM idle for use with variable valves TEST
Nitrous control (min rpm, new timing map or fixed retard)
EGT logging
Tacho Output Pin
Mass Air Flow Meter use a MAF for fueling calculations Debug option Tooth and trigger logger

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