Re: 871 Blower on a 440
[Re: Clanton]
#2414054
12/06/17 04:08 AM
12/06/17 04:08 AM
|
Joined: Dec 2005
Posts: 202 CA
62SAVOY
enthusiast
|
enthusiast
Joined: Dec 2005
Posts: 202
CA
|
BCR girdle and maincaps, that 8-71 significantly underdriven on E85 at 9:1 compression. S/F....Ken M 1 to 1 drive is only about 4# on a 440 This is wrong. My 8-71 currently is under driven by 5%. I can go from 20 inches of vacuum to instant 11 pounds of boost by flooring it. Feels good too pulling hard. Do not see me needing to over drive it by swapping the pulleys. A race car driven on the street but power and giggles when I want it.
|
|
|
Re: 871 Blower on a 440
[Re: 65coronet500]
#2414071
12/06/17 08:18 AM
12/06/17 08:18 AM
|
Joined: Jun 2016
Posts: 170 Wisconsin
Medlock51
member
|
member
Joined: Jun 2016
Posts: 170
Wisconsin
|
I built a vintage 354 blown Hemi's 10 years ago.
Stock block and heads... Venolia pistons...8-1, 8 lbs. boost, stock rods bushed with good bolts... Si stainless valves... stock rockers rebuilt... Clay Smith cam...very mild with a 113 lsa...525 lift... 240-ish duration (the blower mellows out the cam a bit). I ran an old Carter 750 single. Nicely built engine with good parts and machining.
You don't need a girdle, aluminum heads, dual 850's, fancy rods or a mega crank IF you keep the boost down to 8lbs. and keep your hoof out of it. You can have a very nice DD with good fuel economy and loads of driveability.
Now if you want 4 mpg, an uncontrollable idle, gas dripping from the exhaust, overheating in traffic, etc. then go all out. I didn't want that...
There are thousands of blown factory built cars running hyper pistons, stock rods, etc. getting 100,000 miles or more without issues.
|
|
|
Re: 871 Blower on a 440
[Re: Medlock51]
#2414075
12/06/17 08:52 AM
12/06/17 08:52 AM
|
Joined: May 2004
Posts: 12,418 Taxes & Virus's R-US, NY
Dragula
I Live Here
|
I Live Here
Joined: May 2004
Posts: 12,418
Taxes & Virus's R-US, NY
|
I built a vintage 354 blown Hemi's 10 years ago.
Stock block and heads... Venolia pistons...8-1, 8 lbs. boost, stock rods bushed with good bolts... Si stainless valves... stock rockers rebuilt... Clay Smith cam...very mild with a 113 lsa...525 lift... 240-ish duration (the blower mellows out the cam a bit). I ran an old Carter 750 single. Nicely built engine with good parts and machining.
You don't need a girdle, aluminum heads, dual 850's, fancy rods or a mega crank IF you keep the boost down to 8lbs. and keep your hoof out of it. You can have a very nice DD with good fuel economy and loads of driveability.
Now if you want 4 mpg, an uncontrollable idle, gas dripping from the exhaust, overheating in traffic, etc. then go all out. I didn't want that...
There are thousands of blown factory built cars running hyper pistons, stock rods, etc. getting 100,000 miles or more without issues. I also helped a friend build one of these. It was a 354 with a tunnel ram and a blower on top of that. Cost a lot more than doing a blown wedge, and at the end of the day, only made a shade over 500hp...Lots of torque and reliability, but was a big disappointment. Especially with today's wedge heads where 700hp pump gas NA is no problem.
|
|
|
Re: 871 Blower on a 440
[Re: Dave Hall]
#2414109
12/06/17 11:42 AM
12/06/17 11:42 AM
|
Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
Dragula brings up a good point! Anyone run one of those "Superchillers"? Like they have on bada$$ boats? Wouldn't coolant temp. even be enough to make more power or stay in the game longer? Add extra capacity to the cooling system too! Yes I run a Blower shop intercooler.[15yrs]
|
|
|
Re: 871 Blower on a 440
[Re: 62SAVOY]
#2414111
12/06/17 11:45 AM
12/06/17 11:45 AM
|
Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
BCR girdle and maincaps, that 8-71 significantly underdriven on E85 at 9:1 compression. S/F....Ken M 1 to 1 drive is only about 4# on a 440 This is wrong. My 8-71 currently is under driven by 5%. I can go from 20 inches of vacuum to instant 11 pounds of boost by flooring it. Feels good too pulling hard. Do not see me needing to over drive it by swapping the pulleys. A race car driven on the street but power and giggles when I want it. The boost recorded is dependent on many things,You got 11# I got 4#.
|
|
|
Re: 871 Blower on a 440
[Re: Dragula]
#2414645
12/07/17 12:41 PM
12/07/17 12:41 PM
|
Joined: Jul 2010
Posts: 1,845 Tampa
DusterDave
top fuel
|
top fuel
Joined: Jul 2010
Posts: 1,845
Tampa
|
Rolled around the idea of doing this in my Duster for Nostalgia class I run. If I were to do it, I was going to build a low deck 383 stroker with 440Source parts & girdle at 493 cubes and an 871. I can tell you, it would be a blast, but I worry about the heat between rounds. As we run, the rounds get quicker. On pump gas NA, its not an issue, but on Roots, I am thinking it would add a bunch...Been kinda thinking an F1R procharger on water injection would be better for heat. If its a race only deal, run mechanical injection on alcohol, and there won't be a heat issue. That's assuming alky is allowed in your Nostalgia class.
Gone to the dark side with an LS3 powered '57 Chevy 210
|
|
|
Re: 871 Blower on a 440
[Re: Dave Hall]
#2414649
12/07/17 12:46 PM
12/07/17 12:46 PM
|
Joined: Jul 2010
Posts: 1,845 Tampa
DusterDave
top fuel
|
top fuel
Joined: Jul 2010
Posts: 1,845
Tampa
|
Dragula brings up a good point! Anyone run one of those "Superchillers"? Like they have on bada$$ boats? Wouldn't coolant temp. even be enough to make more power or stay in the game longer? Add extra capacity to the cooling system too! It won't cool down the blower itself. They get hot.
Gone to the dark side with an LS3 powered '57 Chevy 210
|
|
|
Re: 871 Blower on a 440
[Re: 65coronet500]
#2415074
12/08/17 02:43 AM
12/08/17 02:43 AM
|
Joined: Dec 2005
Posts: 202 CA
62SAVOY
enthusiast
|
enthusiast
Joined: Dec 2005
Posts: 202
CA
|
Dave
With cooling the air before the blower the problem is now the air will get hot from the friction of the vanes. Detroit 8v92 is a good example also. Inter cooler is below before air enters engine after turbo. Another example would be a GMC Typhoon or Syclone as how they are inter cooled. No room under hood to clear so they had a good idea how to fit it in. You need to cool air after the turbo or the supercharger.
Last edited by 62SAVOY; 12/08/17 02:45 AM.
|
|
|
Re: 871 Blower on a 440
[Re: Dave Hall]
#2415100
12/08/17 04:36 AM
12/08/17 04:36 AM
|
Joined: Aug 2003
Posts: 43,309 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,309
Bend,OR USA
|
When you compress air it heats up and expands, roots type coolers mounted under the blowers can block the air flow into the motor so you see limited gains on the dyno or track with them I think alcohol injection into the top of the blower would help cool down the intake air temps under the blower and make the motor make more power
Last edited by Cab_Burge; 12/08/17 04:37 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: 871 Blower on a 440
[Re: 62SAVOY]
#2415176
12/08/17 12:42 PM
12/08/17 12:42 PM
|
Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
Dave
With cooling the air before the blower the problem is now the air will get hot from the friction of the vanes. Detroit 8v92 is a good example also. Inter cooler is below before air enters engine after turbo. Another example would be a GMC Typhoon or Syclone as how they are inter cooled. No room under hood to clear so they had a good idea how to fit it in. You need to cool air after the turbo or the supercharger. Here is mine with the intercooler.
|
|
|
Re: 871 Blower on a 440
[Re: 65coronet500]
#2415618
12/09/17 04:42 AM
12/09/17 04:42 AM
|
Joined: Dec 2005
Posts: 202 CA
62SAVOY
enthusiast
|
enthusiast
Joined: Dec 2005
Posts: 202
CA
|
DSCN3008 copy by todd, on Flickr Water outlet on the block I used a short straight outlet Hose I used I can't find number. I have one written down but not the correct one. Might be one I was seeing if it fit and wrote it down. Will see if I can find it out when I take car out tomorrow stop by Napa and look for same one.
Last edited by 62SAVOY; 12/09/17 04:43 AM.
|
|
|
Re: 871 Blower on a 440
[Re: hemi-itis]
#2415669
12/09/17 12:12 PM
12/09/17 12:12 PM
|
Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
Clanton,do you think the intercooler you use works better than W/M? For me I think it works better but I only used a base kit from snow.[2x 625 ml,min]
|
|
|
Re: 871 Blower on a 440
[Re: 62SAVOY]
#2415670
12/09/17 12:14 PM
12/09/17 12:14 PM
|
Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
Clanton
Looks good. I will put one up of mine but just noticed I never took pics of once it was done but only during assembly. Take a pic tonight. On the upper radiator hose too I found one that fit without having to use a flex tube. Was off a Ford if I remember right? Will see what it was off of and the Napa part number. Thank you for looking for the part# and the pics,Very nice!
|
|
|
|
|