It's an Indy block and 572 heads. I'll set them at .004 after the spring problem is resolved, then set them hot. Kinda surprised valve spring went away with only 47 passes plus dyno time, but since its only one I'm hoping it was just a fluke. Company is going to send some replacements. Jim.

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.35@165. 4400 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
242" Mullis Dragster. 6.90@ 200mph