Patiently waiting on your wiring write up. If I install the hotter cam and rocker arms, along with the sprint headers, manifold and 4 barrel, what would you est. the HP to be?
If I have the heads ported and polished, how should I tell the machine shop to do it? Also, what would the est. HP be if I did the porting and polishing in addition to the bolt ons?
I don't see the need to tear down the engine as it is a strong 2.8 with only 65k on it. Does this make sense to you?
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01:35 PM
Razor_Wing Member
Posts: 1753 From: Blowing Rock, NC, USA Registered: Apr 2003
On a related story. Did anyone watch the Dayton Goodies Dash Cars. Most are Pontiac Sunfires and cavaliers with carbed 60* V6s, and a smattering of ford and toyotas. They run 170 mph. who says little V6s dont run, especially with an 'old' carb.
[This message has been edited by rogergarrison (edited 02-08-2004).]
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08:04 PM
Feb 22nd, 2004
FierOmar Member
Posts: 1644 From: Glendale, California, USA Registered: Dec 2001
The regulatory is the least of your worries. Mallory makes the regulator which handles their 110FI fuel pump (which delivers 60 psi) and adjusts output from 12 psi down to 3 psi. $75.
So, if I were to use this Mallory fuel pressure regulator, I would not need to change the fuel pump from the pump that came with my 2.8 V6 to a 4 cylinder fuel pump?
I am leaving my 45 psi pump (only a year old) in place. It will be in a free flow situation and will not be stressed at all. The bypass regulator just bleeds off enough psi to drive the carb. It is adjustable all the way down to 3 psi if you need it.
By the way, for the Moroso 14" racing air cleaner, Orief measured things up for the hump back deck lid for me. The only filter element that will fit the air cleaner and give you clearance is the K&N 14"X2.5" filter element. I could not find another element with those measurements. That is the measurement to clear the support strut and the slope of the deck. Cudo's to Orief of course.
I'm trying to post a pic of the setup but I am having difficulty with the software. I hope this worked.
Arn
[This message has been edited by Arns85GT (edited 02-22-2004).]
you didn't 'burst my bubble'.. i was giving you a guideline.. last one you'll get though..
Sorry if it sounded so rude, that was not the intention. I just had alredy decided on a 4-bbl before I even started the thread.
Ok, buying time is getting near and I'm trying to get my last bit of notes together before I do a final draft of all that I need. Here is what I have (pertaining to this post):
Crap! I forgot to get the cam stuff. I'll post it when I get it. All the prices are fresh, I just went a minute ago and made shure. Thanks for all the help everyone, espically Oreif!
As an off topic note...I just noticed we got more avatar things! lol. cool! Did'nt have them yesterday ...or mabie they are just cheesy drapwn versions of what we alredy have...?
Edit: I could'nt find the H272 on Jegs, but I found it on ARI (where I'm getting alot of the stuff) and it's $279! Is that just me or is that high? Anywhere I can get it cheaper? And do I need to replace the lifters while it's torn apart or not? Just don't know if thats something that is tpyically replaced during a rebuild. The engine had roughly 50k miles when it was pulled out.
Oreif, if you have a stick, what clutch do you have? I'm looking for a "kit" that has everything I need (pressure plate, forks, etc). Thanks! ------------------ Check my car out at Car Domain!
[This message has been edited by Razor_Wing (edited 02-28-2004).]
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07:17 PM
Razor_Wing Member
Posts: 1753 From: Blowing Rock, NC, USA Registered: Apr 2003
Edit: I could'nt find the H272 on Jegs, but I found it on ARI (where I'm getting alot of the stuff) and it's $279! Is that just me or is that high? Anywhere I can get it cheaper? And do I need to replace the lifters while it's torn apart or not? Just don't know if thats something that is tpyically replaced during a rebuild. The engine had roughly 50k miles when it was pulled out.
Oreif, if you have a stick, what clutch do you have? m looking for a I'"kit" that has everything I need (pressure plate, forks, etc). Thanks!
Oreif must be busy I can answer these. I bought a GM perforance cam that is the same as the H260 due to the fact that the H272 was so expensive. I priced it here locally at Jegs and the price from ARI sounds about the same as what I was quoted at Jegs.
If you are puting in a new cam, you need to replace the lifters as they will take a set to the cam lobes as it breaks in. This is a must do.
Orief's car is an automatic so he does not have a clutch I got my clutch kit from Autozone and it has held up without slipping so far, but I have only been driving the car a little over a month. I am crossing my fingers on this clutch. I got it for $80.00 due to the fact someone else had ordered it and then never came to pick it up and it was stuck in their inventory. It includes the clutch disc, pressure plate, release bearing and alignment tool.
Hope this helps you out. Richey
[This message has been edited by STRATOHACKER (edited 02-29-2004).]
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11:18 PM
PFF
System Bot
Mar 1st, 2004
donk316 Member
Posts: 1952 From: Red Deer, Alberta, Canada Registered: Mar 2003
I also have a carbed 3.4L which is built basically spec for spec with Orief. I use the Centerforce DF clutch on a 4spd 4.10 AWSOME CLUTCH but not cheap.
Taijiguy carb's his 2.8L and added the matching Edelbrock cam, It has a lot more power than it did with the F/I system. I think it's estimated at about 180hp.
Actually, I didn't use the matched cam, I ordered a Speed Pro grind that I don't think is available any more. (I bought it from the Fiero store several years ago, but they stopped selling it because it wasn't an EFI design cam) It was the most radical grind I could find anywhere for the motor, and I called everywhere. It rumbles for sure. The big difficulty I'm experiencing with my setup is getting the jets/power valve right. I'm seriously considering a move to a Rochester Q-Jet. (That or just going to a 350 swap). As for clearance, I built a shaker scoop that gets alot of attention. I'll post a pic when I can find one. When you put a carb on one of these, you can COMPLETELY dispose of the computer and all its associated wiring. I sold off everything and recovered about half the cost of my engine, which for the full rebuild was around 1700-2000. I had it punched out .040, gasket matched everything, ported the stock exhaust, and all the rest of the stuff you'd imagine. I suppose I'm at better than 200 h/p set up right now. If I could get my carb tuned better, I'm sure I'd make more. I love the way it sounds with that carb on there! I posted a .wav of it running 0-60 a couple years ago, it sounds nothing like a V-6.
Edit: I paid about 25 bucks for the distributor from a bone -yard, they pulled it. Another 10 or so for the advance kit.
[This message has been edited by Taijiguy (edited 03-01-2004).]
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02:49 PM
Alex4mula Member
Posts: 7405 From: Canton, MI US Registered: Dec 1999
Thanks Orief. I guess I'll need also the lifters and springs, yes? Tks
The cam comes with new lifters already. www.northernautoparts.com sells the Comp Cams Heavy duty pushrods for $24 a set. As for springs, Yes you will need new springs. The stock springs with that lift will bind. As for which spring, I am not sure. I had the machine shop guys take care of all that when I had my heads ported and such. I just gave them a copy of the cam card and they did the rest.
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05:56 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
Ok, thanks. So what about the Distrubitor and ignition changes? Do I need to get a diffrent coil or not?
You need a distributor from an 82-85 S-10 truck with the 2.8L.You need the mechanical and vacuum advance style distributor. You can use the stock Fiero coil or any aftermarket coil for a "GM HEI with external coil".
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05:58 PM
Oreif Member
Posts: 16460 From: Schaumburg, IL Registered: Jan 2000
The big difficulty I'm experiencing with my setup is getting the jets/power valve right. I'm seriously considering a move to a Rochester Q-Jet.
There is a guy locally who is going to try an Edelbrock 500cfm carb. He should be ready to fire it up by the end of the month. (It's on a bored/stroked 2.8L which is now a 3.2L) These are suppose to be easier to dial in than the Holley's.
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06:20 PM
PFF
System Bot
Razor_Wing Member
Posts: 1753 From: Blowing Rock, NC, USA Registered: Apr 2003
You need a distributor from an 82-85 S-10 truck with the 2.8L.You need the mechanical and vacuum advance style distributor. You can use the stock Fiero coil or any aftermarket coil for a "GM HEI with external coil".
Yeah, but are there any aftermarket ones? Where on the net could I get one? I can't seem to find one.
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06:23 PM
Mar 2nd, 2004
Razor_Wing Member
Posts: 1753 From: Blowing Rock, NC, USA Registered: Apr 2003
Yeah, but are there any aftermarket ones? Where on the net could I get one? I can't seem to find one.
If you mean the distributor, I bought a rebuilt one from Auto Zone. NAPA also sells them. I don't know of any aftermarket ones. You could also try some of the S-10 forums.
Sorry if it sounded so rude, that was not the intention. I just had alredy decided on a 4-bbl before I even started the thread.
Ok, buying time is getting near and I'm trying to get my last bit of notes together before I do a final draft of all that I need. Here is what I have (pertaining to this post):
Crap! I forgot to get the cam stuff. I'll post it when I get it. All the prices are fresh, I just went a minute ago and made shure. Thanks for all the help everyone, espically Oreif!
As an off topic note...I just noticed we got more avatar things! lol. cool! Did'nt have them yesterday ...or mabie they are just cheesy drapwn versions of what we alredy have...?
Edit: I could'nt find the H272 on Jegs, but I found it on ARI (where I'm getting alot of the stuff) and it's $279! Is that just me or is that high? Anywhere I can get it cheaper? And do I need to replace the lifters while it's torn apart or not? Just don't know if thats something that is tpyically replaced during a rebuild. The engine had roughly 50k miles when it was pulled out.
Oreif, if you have a stick, what clutch do you have? I'm looking for a "kit" that has everything I need (pressure plate, forks, etc). Thanks!
not a problem at all.. Just can't tell how people are 'talking' over the internet.. i apologize..
If you go with a radical cam, you absolutely want to replace the stock valve springs with something beefier. I found this out the hard way. When I first built mine, I thought I could reuse the stock springs. Not a chance. They float at around 4500-4800 and that sucks, since with my cam, that's just when it's really starting to gather itself up. EFI cam profiles have less slope to the lobes, they're more round. Carb cams have sharper slopes, and are more pointed, so it's like they launch the lifter right off the tip of the cam lobe, so they float something awful. Depending on the spring you might get away without machining the head, but I'm pretty sure double springs will absolutely require head work. Keep us posted on your progress, we're kind of a club within a club here, those of us with carbbed V-6's.
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11:02 AM
Mar 29th, 2004
FierOmar Member
Posts: 1644 From: Glendale, California, USA Registered: Dec 2001
Originally posted by Oreif: With the Edelbrock intake, 4-bbl riser, and the Holley 390 CFM 4-bbl, (model #8007) You will have exactly 2.75" of clearence for the stock decklid.
Orief: As I understand, the 4-bbl riser you referred to is the Edelbrock pn 3789. Also, I seem to recall that you mentioned some type of spacer (from Edelbrock?) that is used to level the carb on transverse mounted applications. Please elaborate. Thanks.
...or mabie they are just cheesy drapwn versions of what we alredy have...?
. lol. last bump (hopefully 
