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SVTPerformance's Chain of Restaurants
Road Side Pub
Advice Needed from 6.7 Cummins Experts...
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<blockquote data-quote="Junior00" data-source="post: 16559086" data-attributes="member: 30475"><p>I should have addressed the turbo more as well. Personally, a 63-64 is a little undersized for the 6.7 so it should spool that effortlessly. A 67 is about the sweet spot for all around as it still spools close to stock but will make big power. Biggest thing is getting the exhaust housing right. </p><p></p><p>I run a 14cm housing with a 71 wheel and it’s a little slow to light on my 5.9 but it keeps my egt’s well in check and by 1600rpm I’m making 10-15lbs depending on load. I had a little over 8k iirc behind the truck going up through the mountains in Tn and never saw over 1150 pre-turbo temps, and stayed in overdrive for the majority of the way except for the switchbacks where I had to downshift. The Aisin will help greatly with that. </p><p></p><p>For him anything in that range with correct tuning should light and tow very well with correct tuning.</p></blockquote><p></p>
[QUOTE="Junior00, post: 16559086, member: 30475"] I should have addressed the turbo more as well. Personally, a 63-64 is a little undersized for the 6.7 so it should spool that effortlessly. A 67 is about the sweet spot for all around as it still spools close to stock but will make big power. Biggest thing is getting the exhaust housing right. I run a 14cm housing with a 71 wheel and it’s a little slow to light on my 5.9 but it keeps my egt’s well in check and by 1600rpm I’m making 10-15lbs depending on load. I had a little over 8k iirc behind the truck going up through the mountains in Tn and never saw over 1150 pre-turbo temps, and stayed in overdrive for the majority of the way except for the switchbacks where I had to downshift. The Aisin will help greatly with that. For him anything in that range with correct tuning should light and tow very well with correct tuning. [/QUOTE]
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Advice Needed from 6.7 Cummins Experts...
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