My engine builder doesn't like or feel it's necessary to raise compression in a forced induction motor on pump gas. The limiting factor is the octane of the fuel so if you raise compression you are going to have to lower the boost to prevent detonation. With the 2.9 I will have plenty if blower to get over 20# if I want/need so increasing compression isn't necessary in his opinion. If I was going to be running a smaller blower like a 2.3 then he may have bumped up the compression a bit so I wouldn't have had to overspin the blower.
My 5.0L Boss block with 2.9 Whipple build
- Thread starter eaglesnick
- Start date
My engine builder doesn't like or feel it's necessary to raise compression in a forced induction motor on pump gas. The limiting factor is the octane of the fuel so if you raise compression you are going to have to lower the boost to prevent detonation. With the 2.9 I will have plenty if blower to get over 20# if I want/need so increasing compression isn't necessary in his opinion. If I was going to be running a smaller blower like a 2.3 then he may have bumped up the compression a bit so I wouldn't have had to overspin the blower.
Not much of an update, but got a call from the shop today the block should be getting machined next week and the motor should be getting assembled in the next few weeks. The builder decided to replace ALL the rods just be extra cautious which I have no issue with. When you get this far into a build and with all the detonation damage to the other components I would rather spend a few extra bucks and know the rods are solid. Once the block gets back t the shop things should move pretty quickly, so I will try and get some pics and post them up if/as I get them.
Can't wait to see the car when it's done. Good luck Nick! :beer:
Can't wait to see it Nick!
Well not much to report from a mechanical stand point. Superstorm Sandy did a nice job of slowing things down here in the northeast last week. Motor is ready to be or already being assembled so hopefully I will get a call in the next week or 2. So since there is nothing to report on that front I figured I would post up some pics of my latest purchase, let me know what you think.
Rear
Front
Rear
Front
TF equals win!!!!!
Latest update:
The good news is the short block is assembled and ready for the heads.
The bad news is once the heads were taken apart and inspected there is detonation damage and need to be replaced. :bash:
The good news is the short block is assembled and ready for the heads.
The bad news is once the heads were taken apart and inspected there is detonation damage and need to be replaced. :bash:
Unfortunately buy a new set, I found a new set on Craig's List for a good price, but they are the 4 thread heads or I can spend more on new set of 9 thread heads. Need to talk to the engine builder and see if he prefers the 9 thread over the 4 thread.
Sucks to hear bro. Go with the 9 thread.
Already bought them and dropped them off at the shop today. Got the latest revision with the 9 thread. :beer::beer:
Motor is assembled but was at the other shop so I couldn't get any pictures. However, he snapped some photos of the engine with his cell phone that he is going to e-mail me, I will post them up when I get them.
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Nice!!!!
Not the best photos but you get the idea.
looking good Nick :beer:
And nice wheels buddy :thumbsup:
And nice wheels buddy :thumbsup:
couple more pics of parts trickling in:
Wow your doing the same thing I need to do....lol...boss block build etc...look really good..
Looks great bro. We should both be done at the same time. 
Thanks, but based on your sig looks like you have a pretty stout setup as it is.
Looks great bro. We should both be done at the same time.
So we have 2 races going on, one to see who is done first and the other one after they're both done. :burnout:
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