Are they consistent with the cross-reference provided by Comp? Looking for any experience at all really.

These things are great. You'll never go back to holley's. When you change sizes,whatever is stamped on the jet is the actual hole size.

Good to hear. Doing a re-tune of the carb and it looked like the 83's(Holley) I put in are bigger than the 84's? It was nice to have an option between 82's and 83 jets.

If you want better use BLP jets. They have a wider range of sizes than Comp and have a secondary jet with the extension as part of the jet like it shows below.

Thanks Mark I didn't know BLP had their own series of main jets with extensions, looks good for the larger sizes when the jet and the extension are too close to the same size. I have used and like the Max jets

I use MaxJets in my 4150 carbs but I usually need the BLP jets for the Dominator carbs.

It does cost some money to get set up with a complete MaxJet kit. I think I spent $200 to get 4 of each size in the "normal" range for 4150 carbs.

I posted this up on Mark Whitener's forum a couple(?) of years ago and figured I'd drag it back up, considering the topic.