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Post by slostang on Aug 28, 2014 12:33:32 GMT -5
I recently acquired a 84 t top mustang with a 351 punched .30 over. It's roughly 10.5:1 commission but will be a little higher when I change the heads down the road. My thoughts , and correct me if I'm wrong , E85 being a higher octane I should be able to spin the motor a little higher in the rpm range.
It is also a nitrous motor. Everything is set up as a regular carb motor currently. I know I would need a E85 carb. Say I have a 650 carb on there now , would I need a 650 E85 carb of a bigger one? I've got a nice holly 750 , I've heard of a few company's that convert them. Are they any good?
What exactly would I have to do to the fuel system? Would everything need to be 30% bigger or just the fuel pump? Sorry , I know some of this has been answered before but it's to the point I've read so much I think I'm worse off now than when I started. Thanks in advance!
Shane
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Post by dwight on Aug 28, 2014 21:24:32 GMT -5
First welcome , The gas really has nothing to do with RPM range . If you are going to change heads and make more power the 750 would be better just depends on how far you go . The fuel system will depend on the size motor you go to . There are several good builders ,I use Mark Sullens he has done 4 carbs for me and several for my friends . You really need to have all the motor specs to get the correct answers . Good Luck
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Post by slostang on Aug 29, 2014 0:20:45 GMT -5
What specs do you need? I was also told tonight the fuel system needs to be alcohol compatible? Would it really be worth while for me to do this? I want to run nitrous also. I thought this may be a good way to pick up some horse power abd give me some room to grow but it's a but confusing
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Post by triplenickel on Aug 29, 2014 15:54:16 GMT -5
Welcome slostang!
I would go with the 750. HP will dictate the amount of fuel system you will need. With your current engine, something around a 150 would work. You will need at least a #8 ( 1/2" id ) line from the pump to regulator & #6 from regulator to carb. if you want to run nitrous with the same pump, it will need to be bigger. Alcohol compatible components are recommended and if you have to purchase any components, then it would be good to by them for alcohol use. If you want to use what you already have, by all means, go for it. i have been running this fuel for 4 years now & haven't had any problems with components that aren't alcohol compatible. Fuel also works well with nitrous or boost.
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Post by slostang on Aug 29, 2014 16:05:07 GMT -5
Cool , I'm on track with the fuel lines then. I have a 4150 series Holley 750 , tho some say it's actually a 770cfm at any rate I ordered the proform kit with new blocks to convert it to e85. Any suggestion on what fuel pump to use? I have no ideal what to expect on hp with this build. it will be around 13:1 compression with afr 210 heads Victor Jr intake and a custom ground cam somewhere around 600 lift. I want to spray at least a 150 , if not 200 shot to it.
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Post by triplenickel on Aug 30, 2014 17:03:33 GMT -5
I use a Magnafuel 275 with the filter built in. It's a nice piece. It's alcohol compatible. For you, I would say get the 300 since you're going to be running nitrous.
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Post by triplenickel on Aug 30, 2014 17:21:05 GMT -5
I'm assuming you want to run your nitrous & the motor from the same fuel pump. If so, I would suggest running a #10 fuel line from pump to regulators for engine & nitrous. When I mentioned a #8 line, I wasn't thinking about the nitrous. Some would probably say a 300 pump & #10 line are more than you need, but better to have a little more pump & fuel line than you need than not enough, especially with nitrous.
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Post by bigydaddy on Aug 31, 2014 8:27:22 GMT -5
as you're on justin's website he can do the e85 conversion. otherwise go to sullen's website-try asking him for info when you're planning on using another builder.
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