Got the truck dynoed!

**Yellowsierra** · 03-13-2008 01:28 AM

I went to vengeance racing to get the truck dynoed. My first run was at 12psi and a 10.8-1 A/F ratio. Its was a tide rich but not to bad. I think I could have made alittle more if I would have fine tuned it. When the run was done I turned the boost up to around 15 psi but lost power? I didnt find out intill after I was leaving the dyno that I had burnt a plug wire!

I was really wanting to see some numbers on 15 and 18 psi. Oh well I'll do it another day. Well on 12psi it put down 572.83rwhp and 581.36rwtq. I was happy with the numbers. They let out alittle early(5800rpms)I hope to hit the track here in a week or two to see what kind of numbers I can turn. Here's the dyno graph. I took the picture with my cell phone so its not the best. The torque curve is way ahead of the horsepower intill 5300 rpms!?! seems alittle odd?

**Riceeater** · 03-13-2008 01:33 AM

Wow nice and thats with a burt plug wire?

**Yellowsierra** · 03-13-2008 01:40 AM

Originally Posted by Riceeater

Wow nice and thats with a burt plug wire?

I dont know if it was totally burnt on the 12 psi run but it was on the other runs. The power suffered 80-100 rwhp on the other runs. I should have looked at the plug wires but I was to busy looking at the dyno graphs.

**Botlfed** · 03-13-2008 07:01 AM

eh its alright........hahahah awesome numbers mayne we need some track videos when you go man.

**GMCwantsLS1** · 03-13-2008 08:17 AM

Looks great! The torque and HP should always cross at 5250RPM by default.

**txarkitekt** · 03-13-2008 08:48 AM

True statement.

Oh, and please tell me you are not going to run 18 psi on a stock bottom end... Tell me you have built that 346...

But all in all--flippin badass man! I have seen a few of the truck's vids and it appears that: 1. You are suffering from slow spool-up problems 2. You need a bigger stall 3. You take it easy on launch.

What rearend do you have? Gears?

**Yellowsierra** · 03-13-2008 11:23 AM

Yeah its a forged 346. I should have the spoolining problems taken care of. Im running a 3400 stall and it pulls pretty good out of the hole but I have a 3800 laying in the shop ready to go in. The should put it in the sweat spot. Ill get some track vids when I go to the track. I ran 17 psi on the street and it felt wicked! I was going about 60-65 mph and it started spining at wot! Thats with 285/50-18 toyo proxes. There about 10" wide and hook 200 times beter than my goodyear GT2's.

**Jamest** · 03-13-2008 02:02 PM

Sweet Numbers!

**Jamest** · 03-13-2008 02:03 PM

SWEET NUMBERS!
Now I know what to look forward to when I get the 370 all forged in. I am looking at 10 psi on the low side and 20 on the high side!

**txarkitekt** · 03-14-2008 10:41 AM

Originally Posted by Yellowsierra

Yeah its a forged 346. I should have the spoolining problems taken care of. Im running a 3400 stall and it pulls pretty good out of the hole but I have a 3800 laying in the shop ready to go in. The should put it in the sweat spot. Ill get some track vids when I go to the track. I ran 17 psi on the street and it felt wicked! I was going about 60-65 mph and it started spining at wot! Thats with 285/50-18 toyo proxes. There about 10" wide and hook 200 times beter than my goodyear GT2's.

Oh cool...So I wasn't completely dreaming up these thoughts then... Phew! Makes me feel a little bit better. Yeah man, get that 3800 in there Pronto!
What rearend you running? Gears?

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