How about a video? You got me thinking about a future project...looking for some fuel!!!
Aviator swap completed
- Thread starter Gallows
- Start date
The Aviator engines usually sell for considerably less then their Mach and Cobra counterparts. The only thing that I wish I could of done differently was custom cams while it was sitting on the stand but I didn't have the extra money.
I don't have a video camera. My son tried to get a vid of it on the dyno but the sound quality was terrible. I'll see if he can get a start up vid.
Well I have a few friends with junkyards, may be able to find myself an aviator long block relatively cheap. I'm thinking my B heads are getting worn out so it may be time to get the ball rolling on a swap.
Thanks to Brendan for posting the graph for me:beer: Next mods will be FTBR IRS bushings then install my IRS and T56. Engine mods are on hold for now.
How about throwing in tho'd 98' Cobra cams....make a solid 350 plus.
For the amount of work and $$$ I'll skip that and do a set of custom cams in the future.
By looking at the graph I say it's going to the short runners to early. To find the best opening point you need to do a pull with only the long runners and one with the only the short runners, then set the opening point where the two tq or RPM lines cross.
B head cobra cams at 106 and the exhaust at 118 would make close to 360SAE with much higher tq.
When the numbers are SAE/STD corrected the temp and humidity don't matter.
They aren't runner controls like the IMRCs on B heads. Rather than opening up another port, the FR500 runner control opens a butterfly valve in the long runner and this effectively shortens the runner length.
B head cobra cams at 106 and the exhaust at 118 would make close to 360SAE with much higher tq.
When the numbers are SAE/STD corrected the temp and humidity don't matter.
They aren't runner controls like the IMRCs on B heads. Rather than opening up another port, the FR500 runner control opens a butterfly valve in the long runner and this effectively shortens the runner length.
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Isn't it a waste of time to dyno short and long runners due to the fact that the HP and TQ curves will always cross at 5252 rpm?
Horsepower = (Torque X RPM) / 5252
Would this still be the best point to set the runners to open on an FR500 intake? With the curves crossing consistantly at 5252 rpm what else can pinpoint when to open the runners?
That is correct.
Ok, now I understand.
Looks like you are running a JLT prefilter into a catchcan into an oil separator and then into the intake... you really don't want any oil in that intake do you??? hahahaha
IMO that would be EXTREMELY good power with "stock" cams. That FR500 is too cool.
What custom cam specs would be ideal for this stock block / FR500 intake combination? (with consideration for the PM rods & PM oil pump rotor rpm limits - which coincidentally is my issue) How much cam duration would effectively reach/exceed the rev limits of this rotating assembly with the FR500 intake?
Or are the B head cobra cams pretty much ideal in this situation?
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There is still oil getting into the separator. I have an email from Jay @ JLT and I need to move things around.
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