[Aaron Quinton]

Great post, thank you.

It sounds like the W6's have a weight penalty? Is is the same for all canted valve heads?

Originally Posted by John Langer

Rex made right at 1200 n/a. His car would run 7.30's in bracket trim. He put a 125 shot on it and went 6.99. Again in bracket trim. He puts about 50 passes on his car each year and doesn't have to take the hood off the car between rounds. Doesn't have change head gaskets during the year. Doesn't have to change valve springs during the year.
My current project started in January of 2015 and made it into the car in July of 2016. There were zero delays due to money. In January of 2014 I picked up the phone and called tony and told him my plan. We were intrigued by the kre drce head but it wasn't worth the weight penalty in class racing. If you have to carry the weight of a drce you might as well build one. We talked about every head out there. Tigers, 5's, e pro ports, cv-1's etc. tony said to go with the tigers or pro ports. I called frank and ordered a set of bare tigers. The heads were delivered to lsm to be cubed mid march. That's where the head aches started. Lsm said it would take 2 weeks to cube the heads. We were suppose to have cubed heads April 1 2014 April fools... call after call, lsm said next week, next week. May passed, June, July, august passed. I said f it and called e and got their last set of pro ports. The Tuesday after Labor Day I told frank I needed heads in 2 weeks or I was going another direction. The next day lsm called and said without a doubt they would cube the castings the next day. The next day lsm called and said they lost the fixture to cube the heads and couldn't cube them. I told frank 1,5 weeks or I was going another direction. He had the heads sent to bob and he cubed them by hand. BES got the heads end of September and started on them mid October. It took around 3 months for BES to do the heads and billet intake. The heads were sent to jesel to make shaft bars. Jesel had 30 sets of heads in front of mine in the custom department. Strings were pulled and jesel started to design a he shaft bars. Conventional aluminum rockers could not be used due to the valve placement and desired ratio. They were backed up in the steel rocker department. At the end of the day it took 4 months to get shaft bars. We get the shaft bars and heads back mid may 2016. Had the motor on the pump mid June. Made 1260 but the heads were leaking on the front pads. Pulled the heads and fixed the leaks, made a cam and pushrods change and were back on the pump end of June. Put the motor in the car around July 1.
Other then the lsm delay, there was no delay that wouldn't have been incurred regardless of what brand engine I was putting together.