L31 lazer. With a hot cam

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10-10-2020
94lazer350

L31 lazer. With a hot cam

I need some help with tuning my s10 blazer I have a 96 block with a 97 heads and a 98 intake manifold I bought a hot cam kit that came with beehive springs and 1.6 roller rockers I have replaced all the sensors with one sensors and the disbutor with oem but changed the gear to a melanized gear and replaced the headers with hedman herders and a 255 whirlwind fuel pump and I bought a jet DST tuner but Iam not to sure what va tables I need to change Iam trying to figure this out I have a 76 chevy that I put a cam in but I tuned it with a timing light and change the float pins and springs I did put a aem air/fuel gauge in my blazer at idle it reads 14.7 but at wot it reads 13.8 if anyone can you help me out I really appreciate it this has been my project for 3 years now
10-10-2020
94lazer350

Ima still using stock black box pcm
10-10-2020
dave w

Does Jet DST record engine information (RPM, Fuel Trims, Spark Advance, MAP, CTS ect, ect, ect) when the engine is running?

dave w
10-10-2020
94lazer350

No sadly it doesn't I just ordered a Bluetooth obd2 data logger it should be here on the 22
10-10-2020
dave w

Quote:

Originally Posted by 94lazer350

No sadly it doesn't I just ordered a Bluetooth obd2 data logger it should be here on the 22

That's a good plan. The data logger will help determine when changes made to flash are positive or not.

dave w
10-11-2020
Fast355

Why did you change the distributor gear? Vortec distributor already had the correct gear for a roller cam.
10-11-2020
94lazer350

So I had the oem gear but the cam was eating it up the hot cam acquired the melonized gear same as the Comp Cam
10-12-2020
Fast355

Quote:

Originally Posted by 94lazer350

So I had the oem gear but the cam was eating it up the hot cam acquired the melonized gear same as the Comp Cam

I have used many Hot Cams. They do not require a melonized gear. They use the same GM gear on the LT4 oil pump stub shaft as the L31 gear.
10-12-2020
94lazer350

Sorry man I didn't mean to offend you I'm just trying to figure out what's wrong with my truck only has 300 miles on it and I just need help with the tune I must have just had a bad timing gear I went with a melanized gear cuz that's what I used in my 76 Chevy if I can just get help with the tune and I can get this thing back on the road
10-13-2020
dave w

I'm waiting to see a data log.:popcorn:

I always use a modified (11 millimeter I.D.) melodized gear on an "Imported Distributor" regardless of what kind of cam is being used.

dave w
10-13-2020
94lazer350

Thanks Dave w as soon as I get them I will send them your way ��