Thats cool. So what was the cause of the weird Fuel pressure issue?

 

a faulty liquid filled gauge. as the liquid would heat up, the needle would show BS numbers.

 

Yeah i have gone through a few of those before i gave up on them.

 

what kind of idle and cruise timing figures are typical of an EFI engine? I'm also getting into MAP tuning with this MSD ignition box. I was thinking 35* idle and anywhere between 35-40* at cruise speed with 36* at WOT. I currently have it idling and cruising around 40* based on rpm only. i originally had idle at 24* and realized that the engine runs a lot cooler at 40* idle. the idle cleaned up a lot and it stinks less too. off idle is more crisp and the engine doesn't diesel as bad when i turn it off. it doesn't have a huge diesel problem but my DCR is border line for pump 93.

 

Interesting. It would be fun to tinker with your setup.

That is crazy idle timing compared to what i run. I shoot for 20*. I have alot milder setup thou.

 

I originally set the tune to 24* because that's what worked for me in the past. it has to have something to do with the single plane intake and the carburetor. remember I'm on a 110lsa with a 106ICL. then the carburetor gives a cooler charge. that's my best guess anyways. the timing that everyone runs with carb setups has me scratching my head. some guys are running 39* at WOT and gaining mph as they do it. from looking at other tunes on cars that work great, I think my truck will take 36* at WOT at 11.4ish:1 compression. crazy but I'll keep giving it timing until I don't gain any MPH.

I think I'm going to plug up the vacuum gauge to determine my idle timing. is 35-45* timing normal for part throttle cruising? I haven't looked at an EFI tune in a LONG time. don't have HP anymore so I cant grab a file to look at it.

 

I have read more than a few times that carb guys can pull some wicked timing. So of the old gray beards i work with used to run 50* at wot in small blocks.

I say keep letting it eat until it does not like it anymore.


So when are you pouring the nitrous to it?

 

after I get it hooking on the trans brake I guess. I'd like to milk the motor for all that it's worth before spraying it. I'm more of a N/A guy I guess. nitrous makes a weekend expensive. I also need to send the converter out for a re-stall before nitrous.

 

Im impressed with the fit and finish of this ebay pan. Only 24.8 lbs saved though.

 

I know it's not the same but my brother Monte Carlo with a 355 13.1cr we are running 38-40 degrees and it loves every second of it.