As the title states ,
Anyone have any first hand knowledge on these early setups ?
Wonder if it would be possible to use the '7427 in PFI mode with the high impedance injectors the system...
Type: Posts; User: Nasty-Z
As the title states ,
Anyone have any first hand knowledge on these early setups ?
Wonder if it would be possible to use the '7427 in PFI mode with the high impedance injectors the system...
I would be interested in one (or more) of the 525 MAG BBC intakes if the price is right .
Are these complete with TB and fuel rails / injectors ?
P/M on here or email tomsnastyz@yahoo.com with...
I own a few of these trucks, all GMC's though , a '70 , 2-'71's and a '72 , they are by far my favorite of the GM lineup .
IMHO , they should all have GMC front end styles though , love the 4...
Unfortunately as you have found there was no 454/700R4 combo offered from GM .
I had to make my own Hybrid BBC/700R4 calibration but I use a different PCM than you are using .
If I were you I...
Just in case someone stumbles on this thread and wants an answer .... :
The grounds to the PCM that I mentioned are to come from the body of the sensor , the body of the sensor grounds through...
Well i'll be .....
That's one of those "Why didn't I think of that"......
Damn well sure gonna try to make one first chance I get though .
TOM
12380
Like the title says ,
Have a 1999 Blazer , 4.3 , Black box PCM (16263494) , fighting an issue where none of the three O2 sensors shows a return ground , Pin 25, 26 and 7 are supposed to...
Does the engine still have an EGR valve ? If so is it operational and closed fully at idle ?
TOM
I believe I have all of the Pro Cal files , but still lack the handheld files .
If you are in the sharing mood I would take a copy of what you have and I will return what I have just to be sure...
I believe we hashed this to death in the other thread : http://www.gearhead-efi.com/Fuel-Injection/showthread.php?4391-Glowing-Exhaust-Manifolds-1992-454-TBI-7-4L-P30-Motorhome
Last I left it...
I would not run a TBI with a dual plane manifold , TBI loves a single plane manifold , period.
I would have no clue what Dave is doing in the tune but I would suffice to say he is way more savy...
Installed a Go EFI 800 P/A system on a warm 454 BBC , totally unimpressed . Had to piggyback the factory '7060 (eeek....) to control the trans . Tuning software is a joke , as well as the handheld...
A few years ago when I ran that intake setup I used the 13107 Aeromotive regulator , it is an LT1 rail mount unit , but I used a fitting from Aeromotive to convert the inlet to -6an . Mounted it on...
BHDC or BMHK
It will physically fit in the holder , but will not function .
Use an actual vacuum gauge to verify , could be a sensor bad but I doubt it . I was looking at one of your earlier logs that you sent me and it didn't show a negative MAP value while I was looking at...
MAP signal to the PCM is on pin B13 , I would start by checking for resistance in the wire (Lt Green) leading from the MAP sensor to the PCM , perhaps there is a cut or broken spot in the wire not...
TBI injectors as they left GM were flowed @ 13 psi , so the 61#/hr would be @ 13 psi .
However there will only be a 2.4#/hr difference (58.6#/hr) if you flowed them @ 12 psi , not much to get...
16197427 and 16196395 PCM's are interchangeable , Knock sensor must be matched to the PCM used . S8011 is the correct sensor for the 16197427 and 16196395.
S8012 is for the earlier 1227747 style...
APU1
Guess I'll give them another shot .
Thanks Brian , hope all is well .
TOM
Brian ,
Have you used the off brand EEproms ? I tried a pack of 20 (I think) a while ago , only 1 or 2 out of the whole pack were good , went back to using genuine SST's from then on .
Just...
They were essentially a 4.3 injector ran at a higher pressure, if you do the math , the 45 pph 4.3 injector @ 13 psi would be around 70 pph @ 32 psi , GM's thought was it would fight vapor lock by...
I usually cut the center devider down in a dual plane manifold , but on a relatively stock engine I don't see it as a requirement . TBI likes a single plane intake , so anything you do to open the...
As a user of all three at one point in time , the Inject-It is by far the most refined unit of them all.
That being said , any of the three will work just fine for a conversion , I also use the...
Or simply parallel relays to provide a fail safe ......
I like the idea of a fan in operation light , I have two in the switch panel in my Blazer , one for each fan. Only thing they will not tell...