|
Re: blown hemi questions ??
[Re: His and Her 69's]
#1747075
02/05/15 06:29 AM
02/05/15 06:29 AM
|
Joined: Jul 2010
Posts: 1,845
Tampa
DusterDave
top fuel
|
top fuel
Joined: Jul 2010
Posts: 1,845
Tampa
|
Man, that's an ancient setup. The blower will need a rebuild, I bet.
If you think that mechanical injection system is going to work on the street, think again.
Gone to the dark side with an LS3 powered '57 Chevy 210
|
|
|
Re: blown hemi questions ??
[Re: His and Her 69's]
#1747080
02/05/15 12:07 PM
02/05/15 12:07 PM
|
Joined: Jan 2003
Posts: 12,085
Benton, IL.
DaveRS23
Special needs idiot
|
Special needs idiot
Joined: Jan 2003
Posts: 12,085
Benton, IL.
|
Hemi, blower, mech. injection, budget. I am not sure that those words can be put together.
I agree with above, that the mechanical injection won't work for you on the street. Now except for the budget part, you could use the hat as a throttle body and put modern fuel injection on it. But you will need to put the injectors above the blower to lube it. Ideally, a set of injectors above and below would be the way to go. But again with the costs.
I looked into doing this very thing. Talked to Rich Nedbal a couple of times about it. It was just too much money (and a good bit of complexity and tuning) for me.
But it can be done.
Master, again and still
|
|
|
Re: blown hemi questions ??
[Re: His and Her 69's]
#1747081
02/05/15 12:57 PM
02/05/15 12:57 PM
|
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
|
Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
|
Best to start out with something fresh setup and flowed for your motor. As far as mechanical injection, I have run 5 different mechanical injectors on 5 different motors all drag racing. 3 N.A. If you know what your doing it can work on the street. It can't be setup like you would for drag racing because it would be too rich. It has to be rich for the launch. Not so for the street. I know how to taylor the fuel curve. Yes it would be more hassle running it on the street but can be done. My later setups had a primer pump so I didn't have to dump raw fuel into the hat to start the motor. I drove these motors all around the pits and know I could out run any carbs no matter what. It would be a very steep learning curve for newbie on the street though. I learned most of what I know from Kinsler fuel injection, Tom Conway and running my cars. Kinsler has some very good info you should acquire and read many times if you want to go injection which is way better on top of a blower. But maybe not for the street. When I ran injection NA I was the one of the fastest guys at every race and qualified #1 many times and WON races racing quick 32 races. Spitzer and Jegs super quick series also. Mechanical injection is real performance, makes my blood flow. I have plenty of mechanical fuel injection parts today in my shop and someday I plan to run it on the street in a 440 challenger.  1992  1999 or so.  This 572" motor went 4.80s by the time I was done with it. I was the 11th member of the Spitzer 4 second club with 4.90 with this car and motor in 1992 or so. 
Last edited by Challenger 1; 02/05/15 07:47 PM.
|
|
|
Re: blown hemi questions ??
[Re: Challenger 1]
#1747085
02/05/15 09:13 PM
02/05/15 09:13 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Speaking from just a little experience, piecing a blown hemi motor together has proven very costly many a $$ wasted. I had Dan (performance only) doing the build and even discussed with him before buying parts and when he received them I know he didn't even bother looking at them because they turned out be sh!!t or the wrong part. I have bought parts from members that turned out to be sh!t and am not in a position to argue because Dan is gone. I bought a used blower and was told it was great and everything was redone, had it shipped to Littlefield and turned out it needed a new snout, restripping and a few other things. If you are a newbie like me save yourself the grief and a lot of money and just deal with a reputable builder as close to you as possible, even if it's just for buying the parts but be careful because even with a builder you can still be taken for a fool.
|
|
|
Re: blown hemi questions ??
[Re: ]
#1747089
02/06/15 10:31 AM
02/06/15 10:31 AM
|
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
|
Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
|
Quote:
Speaking from just a little experience, piecing a blown hemi motor together has proven very costly many a $$ wasted. I had Dan (performance only) doing the build and even discussed with him before buying parts and when he received them I know he didn't even bother looking at them because they turned out be sh!!t or the wrong part. I have bought parts from members that turned out to be sh!t and am not in a position to argue because Dan is gone. I bought a used blower and was told it was great and everything was redone, had it shipped to Littlefield and turned out it needed a new snout, restripping and a few other things. If you are a newbie like me save yourself the grief and a lot of money and just deal with a reputable builder as close to you as possible, even if it's just for buying the parts but be careful because even with a builder you can still be taken for a fool.
Very good advise, trying to save a buck up front always cost you more in the long run.
Plus it takes all the fun out of it early on. Spend the money up front and you will be fun and money ahead.
|
|
|
Re: blown hemi questions ??
[Re: His and Her 69's]
#1747090
02/06/15 11:21 AM
02/06/15 11:21 AM
|
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
Clanton
master
|
master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
|
Quote:
Thanks for all the info guys.
I thought that being the hemi is only 426 cubes that the 6-71 would be OK since I am not trying to set any track records with the car.
What size would be Good then ?? a 10-71 seems big to me Cab. (850 HP in a 3000 lbs or less coupe should be fast enough)
I know the parts are Good as I bought the crank and rods brand new and they have been checked out and ready to use.
The hemi has been checked out and just needs minor work.
The heads have been flowed and they flow 331 on the intake side which is on the small side in my opinion. They will need the normal valve work done on them.
Thanks Mike for the offer but I am a long ways away from needing the engine. I just had these blower parts offered to me and want to know if they were useable for what I want to do. I like to save money where I can but I also don't like to waste it on stuff that won't work for me either. This is why I wanted your opinions.
A friend had these parts for his race car but his engine long block stuff got stolen and he is done with trying to run fast.
Anymore info will be Appreciated and I will answer any questions I can.
Thanks, David
David my offer will stand for later also.You only need intake,idler pulley,snout,carb linkage,I have the blower,carbs/base,pullays[crank,blower]blower belt just sitting on the shelf. 
|
|
|
Re: blown hemi questions ??
[Re: His and Her 69's]
#1747091
02/06/15 01:01 PM
02/06/15 01:01 PM
|
Joined: Jan 2003
Posts: 12,085
Benton, IL.
DaveRS23
Special needs idiot
|
Special needs idiot
Joined: Jan 2003
Posts: 12,085
Benton, IL.
|
I won't pretend to know as much about blown Hemis as others here, but my combo was originally put together by DLI as a race package. He spec'd a 10-71 on this 505" engine. So, based on that, I wouldn't think that a 6-71 would be too bad on a non-race 426. Don't the 10-71s have a bigger base than the 6-71? Are there intakes still out there for the different blower bases? I had never done this before either and needed parts, pieces, and advice on how to convert this combo to a street car. I was also concerned about not getting ripped-off. Of all the places I contacted, Good Vibrations in California was the best to work with and was where I got almost all my stuff. I would highly recommend that you contact them if you go this route. http://www.goodvibesracing.com/
Master, again and still
|
|
|
|
|
I've dyno tested more han one blown street motor, you need a 10:71 to start with if you want to make more than 850 hp 
Call all the good blower makers, NOT BDS 
and ask them for a size suggestion for your application 
