[1QuickZ]

I have a 408 LS motor with carb/front drive distributor setup. I have a Holley 950 Ultra HP on my engine and have never had a problem with it. Sounds like the fella above has some good ideas to try out.

 

[1QuickZ]

I dont understand why anyone with a race application buys the Edelbrock package. Its cheaper to buy the intake and box seperately and you can get the MSD instead of the edelbrock non adj. box.

 

[1QuickZ]

I've used the NGK tr6, tr7, tr8 and the br7, br8 and br9. They all worked perfectly on my 12:1 408 with a 950HP carb.