|
Not really. I turned the carb only, I don't think I touched the timing and got a 20% mpg boost over a proper carb tune.
The only way to detune the top end is intentionally screw up the ignition timing which would just make it run less efficient or put in a smaller cam or use something like Rhoads hydraulic lifters that are extra leaky from the factory and make it seem like you have a smaller cam at idle for sure and slightly smaller below 2,000 to 2,500rpm then they pump up to full lift by 3,000rpm.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|