I ran this same post in another section last night and only got 1 response so i thought this may be a better forum for my issue. I have a 67 olds convertible with a 2009 LY6/4L85e/9 inch 3:70. The motor has the Mast VVT HO cam & springs, Camaro LS 3 intake & injectors, long tube headers 3" exhaust.

After MUCH headaches getting it tuned and running im getting close but need advise. The only local tuner knows LS motors but has never messed with a VVT setup. He was not able to get the VVT running right and feels it doesn't do much anyway so he has it turned off. Don't get me wrong the car runs good and pulls pretty hard from a rolling start.... But to me it doesn't feel like a 480-500 hp car. According to MAST Tech guys, Vengeance racing and other posts my build should be right on 500 or so. I have had low 11 sec cars in the past and this ones just not there. I know it's a 3500 lb car and I also think I need a converter because the donor converter I feel is just too tight. Its a dog off the line, cant even spin the tires. Although very fast by most standards, I'm not super happy with the performance.

So my big question is "do I change my build, delete the VVT and change cams so that I fit my local tuners expertise" and then he can really dial in my car OR do I use a VVT experienced tuner that is 300++ miles away and leave my build alone???

I am planning a power adder after new year (procharger or twins... Not sure yet)
If that makes a difference. Also would love opinions on what converter to use.

Please give me advise based on actual experience if possible as this crap is expensive!!!! Not sure how to attach my build thread but you can probably find it if you search my name somehow or 67 CUT-LS.

Thanks for any & all help!!!!