WTB 4.5 Whipple
- Thread starter DZRTRUN
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Dockmaster
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- May 5, 2021
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I hope you have better luck than I did. After almost a year getting jerked around by Whipple I bought a used one that was supposed to be good. The only thing useable was the housing. 4 more months of the Whipple BS getting it rebuilt.
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I think Grant told me your story. I will probably end up with the new 3.8 but I really like our 4.5 on my Wife’s car. Who knows maybe someone will want to go twin turbo this summer.
J Alper
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- Apr 30, 2021
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I sell Whipple, i have Two 4.5 left,
Can send me a DM if someone needs one, New in the Box, Boxes are not opened, has CBM Tensioner, y body adapter, 12 rib upper and lower pulley, fuel rails not injectors or map sensor, for ls7 heads
Can send me a DM if someone needs one, New in the Box, Boxes are not opened, has CBM Tensioner, y body adapter, 12 rib upper and lower pulley, fuel rails not injectors or map sensor, for ls7 heads
Last edited:
Coryz71
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- May 7, 2021
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I was told the new 3.8 is better than the 4.5, do you have any data on this?
I have the 4.0 and I think it’s the least efficient of the three.
Dockmaster
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I have heard 3rd hand (can't confirm) that Redline used a 3.8 on the same engine they would build for a 4.5 and it made 70hp more on the dyno. I have no idea if the extra power was on the bottom end, top end or throughout the power band. You are correct that 3.8 is represented to be more efficient than both the 4.0 and 4.5. I opted to go tried and true for my new motor and did the 4.5. I also believe there is currently only one accessory drive option for the 3.8 it is a little spendy. I'm sure more will come in time.
I sure hope some engine builders start using other blowers like Magnusson or similar. Whipple is a challenge to deal with and I'm putting it mildly.
Jtmoney714
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- May 6, 2021
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Lots of guys use the maggy and make a lot of power.
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- #8
I only have it second hand that someone put a new 3.0 to replace a 4.0. Tuner claimed a bunch of additional horsepower but when the guy drove the car it wasn’t nearly the motor with the new blower. I really don’t like the look of the new blower setup. I will stick with the tried and true 4.5 for now. Maybe in a few years when the dust has settled I will be open to the new 3.8. I really don’t like look of the new Maggie’s either. They sound cool though.
L.R.S.
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- May 5, 2021
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Is this a real question? Or did you mean what model?
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Funco
Dockmaster
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Is your's in assembly now? Wondering if your chassis is the one I just saw in line behind mine? It was a lighter silver color I think? Mine is headed over to Gary for dyno tomorrow, I should take delivery mid-May.
J Alper
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- Apr 30, 2021
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Also Allen G, that got a new sand car built, had a 3.8, was not impressed with it at all feels more like a 2.3 Whipple, anyone thinking about a 3.8 should really stick to around a 416CI, anything bigger needs a 4.0 or a 4.5 whipple. Or a Maggie,
the Maggie makes more power than the 4.5 but comes in later in the power band, the 4.5 comes in right now off the bottom.
the Maggie makes more power than the 4.5 but comes in later in the power band, the 4.5 comes in right now off the bottom.
Dockmaster
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I wonder if that’s the same guy I heard about? I believe it is in a new SCU. Sounds like a very similar story even though it made more hp on the dyno.
J Alper
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Yes, Allen has owned 3 SCU one with a 4.0 whipple 440 that he felt was undrivable with power, and this motor is almost the same size with a 3.8 and before that he had a funco, so he knows what the power is like, and I dont think the 3.8 does it for him.
