longhorn man
08-05-2002, 08:40 PM
Well, as many of you know, I went out on a limb and tested a voo-doo power maker on my trusty and rusty '69 GMC.
As we all know, the differant engine combos react differantly to upgrades...my engine could react positivly to an item, while a stocker would choke on it. (carb spacers come to mind)
Background;
350 small block...virgin block, about 8 to 1 compression, 882 heads with 2.02 valves and a little bowl clean up (last owner claims) Has an Eldebrock "500 intake 501 exhaust cam (again, engine builder...he forgot the rest of the cam spcs..healthy lope at idle) Rhodes lifters, and an eldebrock true doubl roller chain.
On the outside, it has a fairly stock rebuilt HEI with a crane adjustable vac advance and the lightest springs in the kit, Eldebrock performer RPM daul plane intake, a performer 600 cfm man choke carb, a set of Hooker super comp headers, and a 3 foot long 2 1/2 inch exhaust with loud @ss turbo muffs.
Timing was set at about 16 degrees at 800 RPM with the vac advance hooked to ported vacume. 160 degree thermostat ensured I never saw the high side of 175.
Ran great on 87 octaine fuel.
Original post... http://classicheartbeat.com.westserver.net/ubb/Forum1/HTML/001843.html
Background;
350 small block...virgin block, about 8 to 1 compression, 882 heads with 2.02 valves and a little bowl clean up (last owner claims) Has an Eldebrock "500 intake 501 exhaust cam (again, engine builder...he forgot the rest of the cam spcs..healthy lope at idle) Rhodes lifters, and an eldebrock true doubl roller chain.
On the outside, it has a fairly stock rebuilt HEI with a crane adjustable vac advance and the lightest springs in the kit, Eldebrock performer RPM daul plane intake, a performer 600 cfm man choke carb, a set of Hooker super comp headers, and a 3 foot long 2 1/2 inch exhaust with loud @ss turbo muffs.
Timing was set at about 16 degrees at 800 RPM with the vac advance hooked to ported vacume. 160 degree thermostat ensured I never saw the high side of 175.
Ran great on 87 octaine fuel.
http://www.chevytalk.org/forums/icons/icon14.gif I love them. http://www.chevytalk.org/forums/icons/icon14.gif
I had to retune for better combustion...timing is now set at 10 degrees BTDC.
The off idle torque is much better than I have ever had on this engine. It idles in gear now instead of chugging and killing its self. (torque converter has too low a stall speed)
The Improved torque is from right off idle, all they way up to about 3000 RPM. Which, with my crappy gearing, by the time I hit 3K in drive (3rd) I am breaking a couple laws... So with a 3.07 gear, and 28 inch tires, it is whithin your entire LEGAL power band.
All this was seat of the pants testing, so in reality, i was wondering if it was real, or if it was all in my head.
The truck would have a hard time spinning the tire in straight line acceleration. The almost stock torque converter and freeway friendly gears were too much for the engine which wouldn't wake up untill 2500 - 3000 RPM. Now it will light up the right rear at will...just a blip of the throttle. IT still wont do 1/2 track John Force smoke shows, but it is an improvement.
Now, the real test, and this is where they shine.
ROAD TRIP
I went on a 400 and some chainge road trip to Kentucky on Saturday, and I observed 13 MPG on the way there, and 14 on the way back. This was also at a higher rate of speed than what I normally hold it at here in Columbus. I held it at 80 MPH 1/2 way there, then on the way home, I was going 80 for about 3/4 the way. The best I was EVER able to get before, was a dismal 10 MPG, but recently, it was more like 8 to 9 MPG.
So, I give these gaskets a 2 Thumbs up. http://www.webdeveloper.com/animations/bnifiles/tumbs.gif http://www.webdeveloper.com/animations/bnifiles/tumbs.gif
Even though they will set you back about $36 bucks, with an improvement like that in MPG, they WILL pay for themselves.
If your ready to order...go to http://www.jegs.com/ and use there search engine.
Or call there toll free hot nile 24/7... 1-800-345-4545.
Hmmm, maybe I should ask for a comission on this. http://classicheartbeat.com.westserver.net/ubb/wink.gif
------------------
'69 G.M.C. (http://geocities.com/andys_69_gmc/) 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. (http://www.longhorntrucks.freeservers.com/) Andy, in Columbus Ohio
[This message has been edited by longhorn man (edited 08-05-2002).]
As we all know, the differant engine combos react differantly to upgrades...my engine could react positivly to an item, while a stocker would choke on it. (carb spacers come to mind)
Background;
350 small block...virgin block, about 8 to 1 compression, 882 heads with 2.02 valves and a little bowl clean up (last owner claims) Has an Eldebrock "500 intake 501 exhaust cam (again, engine builder...he forgot the rest of the cam spcs..healthy lope at idle) Rhodes lifters, and an eldebrock true doubl roller chain.
On the outside, it has a fairly stock rebuilt HEI with a crane adjustable vac advance and the lightest springs in the kit, Eldebrock performer RPM daul plane intake, a performer 600 cfm man choke carb, a set of Hooker super comp headers, and a 3 foot long 2 1/2 inch exhaust with loud @ss turbo muffs.
Timing was set at about 16 degrees at 800 RPM with the vac advance hooked to ported vacume. 160 degree thermostat ensured I never saw the high side of 175.
Ran great on 87 octaine fuel.
Original post... http://classicheartbeat.com.westserver.net/ubb/Forum1/HTML/001843.html
Background;
350 small block...virgin block, about 8 to 1 compression, 882 heads with 2.02 valves and a little bowl clean up (last owner claims) Has an Eldebrock "500 intake 501 exhaust cam (again, engine builder...he forgot the rest of the cam spcs..healthy lope at idle) Rhodes lifters, and an eldebrock true doubl roller chain.
On the outside, it has a fairly stock rebuilt HEI with a crane adjustable vac advance and the lightest springs in the kit, Eldebrock performer RPM daul plane intake, a performer 600 cfm man choke carb, a set of Hooker super comp headers, and a 3 foot long 2 1/2 inch exhaust with loud @ss turbo muffs.
Timing was set at about 16 degrees at 800 RPM with the vac advance hooked to ported vacume. 160 degree thermostat ensured I never saw the high side of 175.
Ran great on 87 octaine fuel.
http://www.chevytalk.org/forums/icons/icon14.gif I love them. http://www.chevytalk.org/forums/icons/icon14.gif
I had to retune for better combustion...timing is now set at 10 degrees BTDC.
The off idle torque is much better than I have ever had on this engine. It idles in gear now instead of chugging and killing its self. (torque converter has too low a stall speed)
The Improved torque is from right off idle, all they way up to about 3000 RPM. Which, with my crappy gearing, by the time I hit 3K in drive (3rd) I am breaking a couple laws... So with a 3.07 gear, and 28 inch tires, it is whithin your entire LEGAL power band.
All this was seat of the pants testing, so in reality, i was wondering if it was real, or if it was all in my head.
The truck would have a hard time spinning the tire in straight line acceleration. The almost stock torque converter and freeway friendly gears were too much for the engine which wouldn't wake up untill 2500 - 3000 RPM. Now it will light up the right rear at will...just a blip of the throttle. IT still wont do 1/2 track John Force smoke shows, but it is an improvement.
Now, the real test, and this is where they shine.
ROAD TRIP
I went on a 400 and some chainge road trip to Kentucky on Saturday, and I observed 13 MPG on the way there, and 14 on the way back. This was also at a higher rate of speed than what I normally hold it at here in Columbus. I held it at 80 MPH 1/2 way there, then on the way home, I was going 80 for about 3/4 the way. The best I was EVER able to get before, was a dismal 10 MPG, but recently, it was more like 8 to 9 MPG.
So, I give these gaskets a 2 Thumbs up. http://www.webdeveloper.com/animations/bnifiles/tumbs.gif http://www.webdeveloper.com/animations/bnifiles/tumbs.gif
Even though they will set you back about $36 bucks, with an improvement like that in MPG, they WILL pay for themselves.
If your ready to order...go to http://www.jegs.com/ and use there search engine.
Or call there toll free hot nile 24/7... 1-800-345-4545.
Hmmm, maybe I should ask for a comission on this. http://classicheartbeat.com.westserver.net/ubb/wink.gif
------------------
'69 G.M.C. (http://geocities.com/andys_69_gmc/) 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. (http://www.longhorntrucks.freeservers.com/) Andy, in Columbus Ohio
[This message has been edited by longhorn man (edited 08-05-2002).]