My car breaks up at higher RPMs
Thread Starter
Member
Joined: May 2004
Posts: 278
Likes: 0
From: USA
Car: Trans Am
Engine: 305 to 350 to 383 to BOOM!!!
Transmission: 5-speed
Axle/Gears: 3.73 10-bolt
My car breaks up at higher RPMs
I got a 350 with a 650 carb a 465/488 lift on the car. I got the car timed at 13 degrees. Once I get around 3,000 it starts to break up. I got the gap on my spark plugs set at .35 is that too big? or is my problem somewhere else.
Also just wonder if anyone else has this set up...I got a 350 with 9.5:1 pistons, but on top of them I got them on 305 heads...what does that put on my compression ratio up too....?
Also just wonder if anyone else has this set up...I got a 350 with 9.5:1 pistons, but on top of them I got them on 305 heads...what does that put on my compression ratio up too....?
Supreme Member
iTrader: (1)
Joined: Jul 2004
Posts: 10,763
Likes: 4
From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
you don't have enough info to calculate your CR. I have a 350 with flat tops and 305 heads though.
.035" gap sounds ok. What distributor do you have? What timing does it show at 3000RPM with no vacuum advance hooked up? (if equipped with vacuum advance...)
could be a bad ignition module, excess play in the distributor shaft, or fuel related.
.035" gap sounds ok. What distributor do you have? What timing does it show at 3000RPM with no vacuum advance hooked up? (if equipped with vacuum advance...)
could be a bad ignition module, excess play in the distributor shaft, or fuel related.
Thread
Thread Starter
Forum
Replies
Last Post
