Do some years flow better than others?
Do some years flow better than others?
02 Silverado
02 TrailBlazer
As far as I can tell the only differences are the early heads have perimeter bolt valve covers and the later have center bolt valve covers. The LS6 heads are the only ones that flow different and the have a higher compression ratio.
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
Thanks. Do you know if the coil packs from the 5.3s will fit on the earlier perimeter valve covers?
02 Silverado
02 TrailBlazer
i'm with jeff on that answer,
no idea on the coil packs , for sure, but i looked very closely at some pics, and they look like they will
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'94 Chevy Truck: 8.9 et, 408 twins
I'm pretty sure the coil backs will interchange I know the truck coils mount a little bit higher than the corvette f-body coils.
2006 Superior Blue Trailblazer SS AWD, Stock as a rock
Sold: 2002 GMC Sportside Denali front end with a 2002 LS1, FLT level 5, Yank 2600, Trick Turbo, T76, Nelson intercooler, 60LB injectors, Warbro fuel pump, Eaton locker, Magnaflow, 3.42, Nelson Performance Tuning (speed density).
Sold: 1981 GMC LB RC 1500 2002 4.8L 4L60E 12 bolt 3.73 Richmond Lock Right AC PS Nelson Performance tuning
The '01-'02 heads with the 241 castings are supposed to be slighly better from what I've read.
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