I did this last nite: http://www.blueblazer.org/phpBB2/viewtopic.php?t=11583
And I want to tell you...this is awsome. Before I did this I was running at around 2300-2400RPM @ 70MPH, this morning on my way to work I was running 2000-2100RPM @ 70MPH. I dont know what kind of MPG Ill be getting but I know that is a drastic change for a 15 min mod and no money involved. The Blazer runs alot better now and the throttle response is way better than it used to be. It feels like I just unleased a bunch of horses hiden under my hood.....NOW THIS IS HOW A 4.3 V6 SHOULD RUN!!!!!!!!
Yeh its pretty common, good thing you didnt remove them rivets or you would be idling at 40 mph. I know this from my friend who did not listen to me. Did you cut the bottom of the air box too or do you have an intake? Because now you should do that and exhaust.
__________________
1991 Chevy S-10 Blazer 5.7 V8 RIP
1999 Chevy Blazer 2dr 4.3--> If GM engineered something to fail on this beast it has or will. Repairs include w/in first 30 days of owning it: P1870, left front wheel bearing, gas cap, rad cap, idler tensioner, seat handles, and the list goes on.
I have been wanting to try this, but keep talking myself out of it. Evidently I am gonna have to get rid of my scaredy cat attitude and just bite the bullet.
Its not to hard just follow the link in the thread power of a v6 instead of v8 or something like and its in there. Just have a set of hands there too.
__________________
1991 Chevy S-10 Blazer 5.7 V8 RIP
1999 Chevy Blazer 2dr 4.3--> If GM engineered something to fail on this beast it has or will. Repairs include w/in first 30 days of owning it: P1870, left front wheel bearing, gas cap, rad cap, idler tensioner, seat handles, and the list goes on.
yea Im going to do the box tonite, the instructions even say...DO NOT REMOVE THE RIVETS. I just ground the ends off and when I got the half moon POS off I used a pallpeen hammer to flaten the rivets and keep them from falling out....when the weather warms up ill be removing the cat.....
Just follow that link in my frist post.....and Cloud?....there is nothing to be scared of. Unless your scared of horses....lol
__________________
Stock 98 Chevy s10 Blazer LT 4X4, Vin="W" series
Ive tried seeing your point of view, but I cant get my head that far up my astrix.
As for gas milage Im not sure...I just did this yesterday...but common sense tells me that if you can hold the same speed at a lower RPM you should get a better MPG....am I right about this?...let me know
__________________
Stock 98 Chevy s10 Blazer LT 4X4, Vin="W" series
Ive tried seeing your point of view, but I cant get my head that far up my astrix.
Yup thats the link most guys follow for it, it has been posted lots of times
__________________
1991 Chevy S-10 Blazer 5.7 V8 RIP
1999 Chevy Blazer 2dr 4.3--> If GM engineered something to fail on this beast it has or will. Repairs include w/in first 30 days of owning it: P1870, left front wheel bearing, gas cap, rad cap, idler tensioner, seat handles, and the list goes on.
Is this something that can be done to a '95 VIN "W" 4.3 Vortec motor too? Always willing to squeeze any fast, easy HP out of my rig.
Wolfox, This Mod is only for TBI fuel systems. Your VIN says you have CPI. So it won't work for you. Now if there is someone out there that has a Mod for the CPI System. Please let us know.
__________________
1994 1st.Gen. S10 Blazer Tahoe
Aloha
Gabe
Oooooooookaaaaay, got it now. No wonder the intake design looked so different. But I thought that there were a few "downdraft" CPI makes out there too, VIN "Z" if I am not mistaken, that looked awfully similar to the series of Photos I was looking at. I guess I got a little too prematurely excited. Glad I asked before I started yanking my Intake off. It's too cold to be out there putzing with the truck right now.
No if you have that TB hat under your hood you can do this mod. TBI cant do it i dont have that plate. CPI should be able to.
__________________
1991 Chevy S-10 Blazer 5.7 V8 RIP
1999 Chevy Blazer 2dr 4.3--> If GM engineered something to fail on this beast it has or will. Repairs include w/in first 30 days of owning it: P1870, left front wheel bearing, gas cap, rad cap, idler tensioner, seat handles, and the list goes on.
No, I do not have a hat. It's a stright pipe from a modded air filter box + K&N drop-in square filter, up through a modded intake (cut all of the factory resonators off to make a straight CAI using the stuff that came with the truck) into a 60mm or so intake bore and plate that nestles above the tensioner and between the A/C compressor and the alternator; the intake bore itself facing the fan. The plumbing and the IAT sensor makes a sharp detour around the font of the engine to the driver's side headlamp. I have seen some '95s with the "Z" designation that had an intake hat, downdraft style throttle body and horizontal plug wires coming out of the distributor that still used CPI. I figured since I was in the neighborhood, I would ask before I started yanking parts out of a *finally* perfectly working truck. I guess I should be happy that she will spin tires at more than a 50% throttle take off?
Repairs include w/in first 30 days of owning it: P1870, left front wheel bearing, gas cap, rad cap, idler tensioner, seat handles, and the list goes on.
