Hi guys
Just installed the new 306 into the car the other day and fired it up. The car holds idle around 800-900 RPM but it backfires a little when you rev it up and hold it at a constant rpm of 2000 rpm. Now the engine is running at 10:1 Compression with a high lift .533 intake / .544 exhuast lift with 215 and 218 duration, with an advertised minor lumpy idle.
When I would rev the car up the throttle response seems ok, snappy, but after i let off the gas the RPM would come down, and the engine would almost stall out but the computer would try to adjust the idle and correct it for a few seconds and then the RPM would go back to 800-900 rpm and idle. Now I need to know what fuel pressure I should be useing, right now it is at about 39-40 PSI with 24lb injectors. Also my spark gap is at about .064" due to the fact that I am useing a Jacobs 5.0 Energy Pack ignitions system and they say run you gap at .010-.020 oversize from stock, is this ok or not? Also should I run factory 10 deg of timeing or should I retard it a little bit? Im running 93 Octane like my engine builder recomended also. Also before I forget my vacume guage which is hooked up to the vacume tree on the firewall reads 10-12 psi of vacume at idle which I assume is ok with a lumpy idle cam.
Any suggestions would be awsome as im planning on running the car on the road today after fine tunning everything.
Just installed the new 306 into the car the other day and fired it up. The car holds idle around 800-900 RPM but it backfires a little when you rev it up and hold it at a constant rpm of 2000 rpm. Now the engine is running at 10:1 Compression with a high lift .533 intake / .544 exhuast lift with 215 and 218 duration, with an advertised minor lumpy idle.
When I would rev the car up the throttle response seems ok, snappy, but after i let off the gas the RPM would come down, and the engine would almost stall out but the computer would try to adjust the idle and correct it for a few seconds and then the RPM would go back to 800-900 rpm and idle. Now I need to know what fuel pressure I should be useing, right now it is at about 39-40 PSI with 24lb injectors. Also my spark gap is at about .064" due to the fact that I am useing a Jacobs 5.0 Energy Pack ignitions system and they say run you gap at .010-.020 oversize from stock, is this ok or not? Also should I run factory 10 deg of timeing or should I retard it a little bit? Im running 93 Octane like my engine builder recomended also. Also before I forget my vacume guage which is hooked up to the vacume tree on the firewall reads 10-12 psi of vacume at idle which I assume is ok with a lumpy idle cam.
Any suggestions would be awsome as im planning on running the car on the road today after fine tunning everything.