A little update, changing the turbo setup. Minimized wiring and a few changes.
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'94 Chevy Truck: 8.9 et, 408 twins
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T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
Updated to 3/8" flanges lol.
Relocated air filters
Installed a toggle switch.
Nelson Performance
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'94 Chevy Truck: 8.9 et, 408 twins
Nelson Performance
FastestTruckList.com
NP on Facebook
Youtube Channel
'94 Chevy Truck: 8.9 et, 408 twins
truck is back together running great.
Heading out to sar for some arm drop racing then truck nationals on de 6/7th.
I had to lower the boost; i found the limit of the stock heads on my setup, 28psi and the area between the valves crack lol.
Lowered boost to 20psi and having fun.
This is as far as my current budget and mods have taken me; time to move on to the next step.
New setup being thrown around, as you know this takes a while; gonna learn from previous stuff and some of the faster cars out there.
I've been following yours, looking good!
Nelson Performance
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NP on Facebook
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'94 Chevy Truck: 8.9 et, 408 twins
did yours literally crack all the way through? mine showed the same signs but wasnt deep to cause issues, actually had them repaired, which didnt take much, so far so goodpoint in hand is it doesnt take much horsepower to show signs of cracking between valves.
why you running stock heads anyway on such a nice build?
Simple: 408 on steroids!
single digits coming soon!