I have an 88 chevy single cab 1/2 ton. I know it's not a 3rd gen f-body, but the TBI posts yall make help me out a lot. I had my 350 rebuilt, put on s/r torquer heads, crane cam 2020, holley 300-64 intake, crane roller rocker arms, edlebrock TES headers, true dual Hi-flo cat exhaust, 2 dynomax mufflers, and a stage 2 Jet performance chip. Anyway, I finally got around to replacing the original Rochester TBI with the Holley 670. After about 45 min, I get it bolted on the engine. Try to start the truck, and it wont start. Turns out that the wiring instructions for the TBI are wrong. I just wanted to know if anyone else has had these kind of problems with this TBI. Also wanted to say this is the last Holley product I'm buying!

 

Yep, I've got Holley's 670cfm Throttle body on my car, and sure enough, the wiring diagram in the instructions is wrong as anything. I thought that maybe it was because I had a Camaro and the throttle body was for a truck...Looks like I was wrong. Another thing, have you ever tried to get on-line tech support from them? It's totally non-existant! I've lost a ton of respect for Holley because of my TBI unit...

-Mark W.
'88 SC Camaro w/ 305 TBI

 

Can you post the instructions and then post the corrections? You may save someone else a buttload of time. Like me, for instance. I got mine used with zero instructions so anything would help.

Steve

 

Instructions:

Sell it back to the guy you bought it from...

 

It's been 4 years but I do remember changing some wires around on the injectors to get them to fire b/c of their instructions. Pretty quick though. I used bullet connectors so I could undo the wires quick and try another approach. You would think after 4 years they would get it right but here is one thing I've learned about Holley (at least my experience has been) is that most of them DON'T CARE!!

Take their TBI intake manifold...totally screwed up in design. You need a spacer to get the EGR valve to no hit the IAC motor, I was given 3 different EGR vavles to use: 78 truck, 85 truck, and a 87-92 truck...the 78 worked since that is what they "stated" that the manifold was designed for. However the EGR base had to be slightly massaged to fit on the manifold b/c Holley couldn't even machine the EGR mounting base properly. Even the block off plate they supplied won't fit without grinding a small portion off! Then I call their tech line and I get a wrong part number for a spacer...wasn't even the right part manufacturer to match with the part number they gave me. Then 4 years ago they sent my TB unit with 80lb/hr injectors and my dad had to call someone besides Holley to find out their mistake and they did not want to admit it until we plainly told them they installed the wrong injectors. They then wanted me to send the injectors back while I waited for the new ones which I told them NO, for them to send the new 65lb/hr injectors and I would send the old ones back when I got the new ones...I was running very very rich, and that was on a 300hp 350!

Hate to put Holley down like this but they do need to wake up and show their customers some respect and fix some things with their company. I too have had it with Holley. Their TB has gave me little to no trouble for 3-4 years now so I can't complain but I guess I'm lucky considering the stories I've heard from others.

------------------
1988 TA 300+hp 350 w/ TBI and Holley TB unit, Holley projection intake,
WC T-5, 3.42 gears w/ Auburn posi. MSD 6A, edelbrock TES headers, dynomax 3" cat and cat-back system, ACCEL coil, polyurethane bushings all around, aluminum driveshaft, Mr. Gasket open air cleaner.

1993 S-10 w/ 4.3L V6 TBI, slightly bigger cam, Mild polish job and 3 angle valve job on heads, Edlebrock TES headers, Dynomax cat back, MSD 6A, ADS chip

2000 Kawasaki KX 125

 

Rrrrrriiiiiiggggggghhhhhhhhttttttt.... I get it; you're one of those guys that when someone asks, "What are some cheap perf mods I can do to my 305?" You immediately chime in with "Sell it and get a 350."

Thanks for the advice, :P
Steve

 

You are wrong. I have over 6 years experieince with the Holley 670cfm TBI units, as OEM and on the analog and Digital ProJection systems. IMO, no good. Not gonna get into it but injectors sticking, pins not connecting and other reasons that I do not like or put on peoples vehicles. I just help poeple fix/diagnose them when they are broken.

305's are ok. If you got one, build it... You must have relationship/behavioral problems to go after me like that, by the way. I feel bad for you.... Have a nice day. Oh, judge the people you know, not the people you do not. Thank you.

 

Hey scauffiel, be glad you don't have the instructions. Installation is just how you think that it would be. If you were to read the instructions...lord help you . I don't have a scanner or I'd post mine, but you might not be able to read them...they're covered in automotive black stuff.

-Mark W.
'88 SC Camaro w/ 305 TBI

 

And in others' opinions they are liked.
Then why did you?

You mean with help like this: Sell it back to the guy you bought it from... You don't charge for that help do you? I must have missed the... errr... more informative stuff, my bad.

Hmmm... I seem to recall something related to this... lets see... Where was it... Oh here it is: You must have relationship/behavioral problems Nice "judging" quote - where did you find it??

Hey, don't worry your pretty head about me. Why don't you stick to feeling yourself?

Welcome.

Steve
Oh by the way, don't tell me what to do.

Disclaimer: This was all typed with tongue firmly planted in cheek. Taken with a grain of salt. Not for children under 3. Off road vehicles only.

 

You must be an ex-military guy with nothing better to do but hang out on his computer.


Again, I feel sorry for you. Yeah, some people like them. Heck, even I like them when they work, but it's just a matter of time B4 broken.

Yep, just checked your profile, Navy Seal. Going by your last name gave it away, by the way...


OJ (only jokin')


[This message has been edited by FastBroker (edited October 05, 2000).]

 

Yeah, well you know how it is. Obviously, since your reply came within a couple minutes of mine . It's either this or I have to table dance for fun and extra cash. Since I got kicked out of Furrs Cafeteria during Seniors' Bingo Night it just hasn't been the same....

Hell, I like anything until it breaks too! As you point out, doesn't matter what it is it's just a matter of time.

Steve
Really... My last name, eh? How's that?

 

Badbird,

While we're talking about holley's intakes, let me tell you about the 300-64. This intake was made for 87-95 chevy trucks. However, it wouldn't bolt up to my s/r torquers, which were also for 87-95 chevy trucks. So, the intake had to be drilled so it would bolt up. That really pissed me off, but I decided I could live with it. So we go to put on the TBI. First off, the linkage bracket has to be molded so the linkage could reach. Then just as you said the EGR valve was in the way. So not only did I have to put on the TBI adapter plate, but I had to add another 1/2" spacer! I have no idea if this hurt or helped my performance, but this pieced together BS is pissing me off bad. Right now I'd trade that POS intake straight up for a stock GM one.

 

I was just thinking of putting one of those Holley TBI's on my car. Does anybody else have any gripes about Holley? More importantly, has anybody has a positive experience with these TBI units? I'd like to hear from anybody that has tinkered with TBIs and associated intake manifolds.

Thanks for any help you can offer,

Jason

 

I didn't mean to **** off anyone with my earlier "return" the Holley unit. It is just that I have have bad experiences with more than 50% of the units I have dealt with (my cars, too, but mostly others). In my opinion, that defect/problem percentage is waaaaaaaay to high and I like to use other units/systems. Ie, Edelbrock ProFlo MPFI system, but cost is high and is not street legal...

But the holley's do have their place and do work ok for some. I actually have a 2Di system on the floor inthe garage I removed to install a GM TBI on my Jeep Wrangler w/350. I did this because I had 3 bad Holley ecm's, 2 bad Holley injectors and when I had the (new) injectors flowed, they were off by 11.8%!!! This is a normal tolerance number for Holley, they told me. I am pro Rochester 2" TBI (GM's OEM version) and am presently looking for one to replace the 1-5/8" Rochester I have now. Also, if you fry an injector/gasket, etc on the Holley, it is very difficult to get the replacement parts off the shelf whereas all NAPA stores (and most others, I bet) stock injectors/gaskets, etc for the OEM TBI's...

Don't buy a ProJection manifold, either. Just buy a (cheaper) Edelbrock Performer manifold and buy an adapter from Turbo City or Holley. Everything will fit and it will work fine. The Performer manifold will support more than 300hp up to about 5500-6000 rpm, too. If you need/make more power/rpm than that, but the Performer RPM QJet manifold but the runner size is much bigger on that manifold and is usually overkill for most heads...

 

Actually it helps when you raise the TB because it helps the fuel to atomize better.

89BlwnRS,

I think you take a chance when you buy one as to whether it will work fine or not. Like I said in my first message, I haven't had any real problems out of mine but I definetly would not go with a Holley Projection. It's a pain in the rear to get it installed b/c of all the modifications that nee to be done. I hear Edlebrock intakes are working well for a lot of people. Once I get my projection manifold installed I may write an article showing all the parts and steps involved in installing this manifold in case someone really wants to install it.

 

I'm well aware of the "quality" of Holley injectors, but never knew their TBI Projection manifold was such a POS. Looks like carb manifold with adapter is the only real way to go.

------------------
1989 Camaro RS LO3 WCT5
http://350.StreetRacing.org
ICQ: 61342629 AOL IM: BlackSunshineZ28

 

I wish I would have went carb manifold but my hard head thought that it would be simpler to go with a manifold that was made for TBI...ha, their engineers were smoking something when they designed the projection manifold!

 

It's not that the Holley intake is a POS, it's the fact that they obviously did not design the intake to fit the vehicle it was supposed to be for. Modifications you will need:

1) EGR valve - good luck finding the correct one. Holley instructions and their worthless tech support give no clue as to which one will work. I have yet to go on a field trip for this one.

2) Fuel lines - the Projection intake mounts the TB about 1/2" further forward than stock, meaning that the stock fuel lines won't line up. Custom setup required.

3) Throttle/TV cable bracket - also due to the TB being 1/2" further forward, the stock bracket may or may not work for your setup. Mine included a nice 700R4 bracket, but even that may require some modification.

4) Intake bolts - You can't use the stock type unless you also use thick washers to keep the bolts from rubbing the pushrods. My alternative was to purchase ARP 12pt stainless steel Chevy intake bolts. No problem with these.

5) Heater hose - the heater hose that mounts at the REAR of the stock intake mounts at the FRONT of the Holley intake. Not a big deal, but yet another modification.

6) TBI spacer - this appears to be a requirement due to the fact that if you try to hook up the fuel lines to the TB without a spacer, the lines rub the base of the intake where the TB mounts. I have a 1/2" on mine. So far, so good.

7) Brake booster hose - this hose mounts directly into the stock intake runner (#3 I think). Holley made no provision for this hose on their intake. You must use the vaccum port on the TB which is really for the PCV valve. Luckily, there are a few extra vacuum ports on the TBI. I'll use the original PCV port for the brake booster and a smaller port to reinstall the PCV hose.

8) Instructions are listed for about 4 different Holley intakes, none of which seem to be for the one we have. Luckily, if we're changing our own intakes, we must already have enough sense to figure it out ourselves!! Thanks Holley.....

The Edelbrock TBI intake is not really an option either because of the smaller TB bores. Holley TBIs have 2.00" bores, the Edelbrock is for stock bore size. It CAN be bored out, but what's the point of that?

A good carb intake with a TBI adapter will work ok, but looks rigged and hokey (IMO). I had this setup on my last TBI engine.

I haven't even mentioned the issues with the Holley TBI unit itself. I have yet to crank my new engine for the first time, so I can't comment on the flow of the injectors or the wiring connectors. I had to get a different TPS connector just to hook the stupid thing up.

I sound like I'm against Holley and I am, but my experience with ANY aftermarket manufacturer has been less than pleasing. I just don't think they care about us, the end users. I guess it's up to us to figure out their mistakes.....Keeps us busy, right?

------------------
'92 RS, ZZ4 10:1 350, Edelbrock 6085 heads, Crane 208/214 467/482 cam, GM/LT4 1.6 true roller rockers, Holley Projection TBI intake, Holley 670 TBI, SLP/Jet-Hot 1-5/8" headers, Catco 3" cat, Flowmaster 3" catback, Hughes 2500 stall converter, stock 700R4, Auburn Pro posi w/3.42, 17x9" SS rims w/BFG tires, Medium Quasar Blue w/white SS stripes, 48,000 miles....

 

my god...that's like a bad nightmare...

 

I've been trying to tell you guys that H is on crack... Not the sharpest knife in the drawyer, those guys...

 

I know this one is from a long time ago...but any of you guys ever figure out which EGR valve will work on the 300-64 mainifold???

Thanks,
Dave