Difference in BBJD heads?? June 08, 2022 02:47AM
What are the differences in BBJD 619 and 10.1 mechanical engine cylinder heads. I see that the part number on early 619 heads is different than later 619 and 10.1 heads. Are the valves different? Are injector holes larger in later heads? Do newer heads flow better?
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Re: Difference in BBJD heads?? June 08, 2022 02:28PM
I can't remember the part number for the better stock 10.1 head at the moment but the 10.1 heads have bigger valves and flow better in stock form. 10.1 use smaller injector tips (7mm I believe) but it's easy to open them up to 3/8" and use the bigger tip injectors.
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