Improve the TBI 454 or go 8.1?
01-10-2011, 01:52 PM
#1
Member
JUNIOR BUILDER
Thread Starter
Join Date: Oct 2003
Posts: 84
Improve the TBI 454 or go 8.1?
I have a 89 GMC Dually with a stock TBI 7.4. It does have headers but would I be better off changing the heads and intake to a 049s I have that are ported with big valves and maybe a camshaft and stay TBI or I also have a 8.1 complete with a 4L80E that I can get a harness from Nordstrom for 875.00 to run it all. Thanks!
