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Old 03-19-2020 | 11:04 AM
  #16  
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Mrmerlin
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google Motorsport Utah its in SLC
Old 03-19-2020 | 11:05 AM
  #17  
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https://www.google.com/url?sa=t&rct=...GKmFk_PVNKFh-D
Old 03-19-2020 | 12:27 PM
  #18  
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z driver 88t
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Thanks Stan. I did that first. Odd that they have yelp and Google reviews, but seem to have no website or FB page.
Old 03-19-2020 | 01:20 PM
  #19  
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Originally Posted by Petza914
Mine are 79 cams though so the same higher lift of the 83-84 cams, but combined with longer duration than the 80-82 or 83-84 still making them the higher performing choice. My motor is an 83 4.7L so the higher compression spec one too.​​​​​
The 78-79 cams also have more lobe separation - better for supercharging?


(I don't recall who to credit for this spreadsheet, apologies.)
Old 03-19-2020 | 02:59 PM
  #20  
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Why diameter did you use?
Old 03-19-2020 | 05:45 PM
  #21  
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I would be glad to send you one, we do ship internationally and it would save you a lot of trouble if you want to get maximum performance out of it. I have over 200 dyno runs and a dozen hard prototypes involved in the design of our crossover to get it just right. Simply moving the merge 1 inch closer to the exhaust ports cost 10 hp. In testing we actually lost hp with some configurations. Using 2.0 instead of 1.5 bend diameter angles may only be worth a couple of hp but that combined with a bunch of other small hp gains makes for a powerful package. I wish you luck and hope it gives you the performance you are looking for. If not, give one of our resellers a call and we'll get one headed your way.

Dave Lomas



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