55 series head and injectors August 16, 2022 07:30AM
how would a 55 series deere head perform on a stock 466 bottom end block with stock pistons 40 series 3000 rpm class. also with a 55 series running smaller injector tips can a person drill them out to the larger tip.
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Re: 55 series head and injectors August 17, 2022 02:44PM
Compression is going to be pretty low with a 55 series head and 40 series pistons, may need ether to start. To run regular injectors in the 55 series head you want to drill the injector holes to 9 mm
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Re: 55 series head and injectors August 17, 2022 02:45PM
Actually hole in head for injectors 3/8” .
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Re: 55 series head and injectors August 17, 2022 11:44PM
Would you actually see performance gain with the loss of compression? And would the spray pattern be different on a smaller tip injectors?
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Re: 55 series head and injectors August 18, 2022 01:39PM
head is to big and wouldnt run worth a crap
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Re: 55 series head and injectors August 19, 2022 12:40AM
This actually is a good combination as long as the head is pretty much stock port and valve size. Yes it will lower your compression to approximately 14:1or 15:1 and may take a squirt of ether to start. To utilize the combo fully, you will need another cam other than stock. Drilling the head to accept the injectors isn't a big deal.
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