New - Lots of Questions. Help me understand S&SS

[Paul Precht]

Originally Posted by LemonWedge

This sounds like the truth. I do NOT have cubic dollars. Bracket racing is fun. But like most car guys, I?m constantly looking for the next thing. Lots of good suggestions here.
So if I?m looking at this correctly, a 1967 Satellite had a shipping weight of 3534. The 383 four barrel, advertised at 325, is factored at 290 with stock 516 heads. This means the weight break number is 12.18, which slots the combo into SS/K, which is an index of 11.25. To be competitive at all, I?d have to have that combo solidly into the 10?s. That seems crazy to me. With stock heads and a 625 cfm AFB.

Also, Am I correct that under the GT class, you can run an engine combination from another year, such as a 440 six barrel setup in a 1967 chassis??

The 915 small valve is a better head than the 516 for stock, in SS the Stg5 head is probably the best option.The 60s 383 AFB which is the same as the 426 Street Wedge can work in Stock but it's a bit too small for any real power in SS. I have tested 2 of them on my flow bench and they flowed 566 and 582, I'm guessing their original rating was 575, the 582 one with a large 65 Monaco air cleaner base flowed 598 CFM. The 440 would need a full cage in SS as a GTX or in GT. If you don't have a cage the 70-71 383 would be best for GT as it can fit GT/LA which is not typically a very populated class. The AVS can flow close to 650 with a good base and the 383 Holleys that I checked were 724 and 746 without putting a base on them, both have the same HP rating in SS with GT being a bit higher. None of these will go .8 under without great heads, big money, Pro trans etc. The 70 383 will go under the index in GT with good heads, intake and ideal cam.