5.3 Whipple LT4 hpfp
Aug 22, 2018 | 09:31 AM
#1
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On The Tree
Joined: Jan 2018
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5.3 Whipple LT4 hpfp
An LT4 hpfp and injectors are being installed on my 5.3 2016 Silverado. They’re have been lots of problems with interference. There’s not enough material to fix it by grinding the manifold. Adding weld metal should have worked but there was too much cracking. A little fabricated box has finally been welded in allowing the manifold to fit correctly.
i read where some folks install these with no issues so there is significant variability in the castings. Milling the pump would have helped though I’m not sure if that alone would have been enough.
The blower was purchased in fall 2017.
Just a heads up.
i read where some folks install these with no issues so there is significant variability in the castings. Milling the pump would have helped though I’m not sure if that alone would have been enough.
The blower was purchased in fall 2017.
Just a heads up.
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Jun 27, 2020 | 02:14 AM
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Aug 7, 2020 | 07:05 AM
#9
Staging Lane
Joined: Oct 2016
Posts: 63
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From: Fl
Put some thermal plates on it and raise the blower up. I run them on my 2017 zl1 and it’s night and day for temps with out them on the car in the summer. With out I can’t touch the lid after driving the car with them it stays around 90/100 degrees so they do work. That’s an easy way around this problem. I hold the bolt on record for the zl1 for boost only with stock heads and cam at 9.52@143 so trust me they do help hp on drag racing. Interchiller in Australia is currently making some new ones to fit the lt4 /lt1 blower cars trucks which will be way better then faster proms that are around now.
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