Big whipple
- Thread starter texas mongrel
- Start date
BlackICE
GT Owner
yes i didnt state that but meant to. You can not add a second key way unless you pull the crank. I do have a kit to pin an aftermarket balancer which will essentially be the same thing as having the crank cut. There is a mandrel and you have to drill into the crank. I will take pics as i am doing it to a forum members car this weekend in our quest for some more power.
yes you are correct.... I have a away todo it with out pulling the motor and will have pics after this weekend
Yep!!
Might even want to install a different crank that has been cut for 2 keyways, thus keeping your original. Probably best to broach or mill a new one.
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BlackICE
GT Owner
Do you mean those kits that have a guide to drill a hole (not keyway) where you insert a steel rod?
Can't be much clearance to do the job, is there?
Yes a hardened roll pin! Right angle drill should be able todo the job! We shall see tomorrow!!!
Ralphie tue factory cranks are cheap also so yes could buy a spare and cut full key ways as the half moon key ways are not as strong or ment for hard abuse from a big blower....
Fubar
Totally ****** Up
Your not going to see big benefits from the 4.7 unless you have built motor and upgraded fuel system. The big whipples are more efficient at higher boost then than the smaller ones but their is a limit to how much boost you can use with pump gas. Methanol (or E85) would be the preferred fuel but you will need be able to pump a lot of it. Its nearly double the volume for the same energy as pump gas.
BlackICE
GT Owner
:agree:
My Gen1 already pushes the limit of the stock fuel system and readily available 91 octane.
Thugboat
GT Owner
Some of us are hoping the bigger whipple will take less effort to do the same job as the smaller one. We in Texas hope this equates to less heat generated for the same power. That will allow us to track the car longer in the Texas furnace. Is this stinking thinking or is it possible.
Thugboat
Thugboat
BlackICE
GT Owner
Going bigger would be the wrong direction for a road racing track with heat concerns.
Xcentric
GT Owner
Chevy has been able to get more efficiency out of a smaller unit. 1.7 vs. 2.3. Spun a lot faster. Curious how that translates to heat generation.
I think you're correct in one way because in a track situation you'll be using all the power you can get and more power = more heat. But for a specific power output, the bigger blower would Surely be more efficient and thus generate less heat?
I'd still like to see the big Whipple with upgrade fueling, plus e85. I made 850 rwhp on s 3.4 e85 setup. I'd love to see the bigger system going the same route. .