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Lawrie · 11-19-2019, 02:21 AM

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8rt heads are truck ones ,and have a larger chamber.
I sure noticed the difference on our 33 with using heads with the larger chamber,
Less MPG and torque.
Lawrie

11-19-2019, 02:21 AM	#6
Lawrie Senior Member Join Date: May 2010 Location: Qld, Australia Posts: 4,221	Re: 8ba Heads 7RT or EAB Sponsored Links (Register now to hide all advertisements) 8rt heads are truck ones ,and have a larger chamber. I sure noticed the difference on our 33 with using heads with the larger chamber, Less MPG and torque. Lawrie