Just came back from the shop were we Dyno'd my Motor build by Best Machine. This is a 4.31 Bore 4.3 Stroke Naturally aspirated Big Block Buick Motor made 1004 HP with a bad crank main seal. We lost the seal after warm up and vacuum fell from -25, to below -10 due to the leak. Would like to Thank John Zerucha for loaning me his headers to make this test run possible. I Think with this I will Soon be able to update my Signature Line.
Pictures are on Facebook Go to Best Machine Racing Engines In the album section look for Buick From Hell I will try to put some on the board also https://www.facebook.com/media/set/?set=a.513979545324400.1073741826.135175363204822&type=3
TA Alum Block 4.500 Bore 4.300 Stroke TA Stage 2 TE Heads 2.25 Intake 1.76 Exh Close to 1.00 inch valve lift Intake flows over 400 cfm Exhaust flows over 285 cfm 15 to 1 Compression Custom Belt drive by Jesel Custom Rockers by Jesel .938 keyed lifters Moldex Billet Crank BRE 4500 Carb Dailey Dry Sump
Wayne... congrats! I know you have been working on this project for quite some time. I am guessing 1025 HP at 8000 rpms with correct engine vacuum and maybe more with your new set of step headers. Whoever is on Facebook please take the time to look at Best Machines page. In specific, the "Buick From Hell" portion. Top notch all the way!!!
Thanks John Yes the seal was disappointing but after 16 years of collecting parts ( crank was the first part bought for this build in 98 ) I wanted this thing to show what it had even with the leaking seal. Chuck ( Engine Builder ) is estimating the same he thinks at least 20 HP in the vac leak.
1.83 HP/cu.in.......thats stout Wayne !!!! You are going to put that Skinny Kid Chassis to work !!!! Congrats !!!
That's how it's done! I'm very happy for you Wayne. Hopefully the next one doesn't take 16 years and we all get used to 4-digit power from these Tomahawks. I think there is plenty more there with the proper vacuum.That could even raise your available RPM even more along with the added power. Do you know how big the intake port ended up? Both CC and Cross Section? How was the exhaust flow with the smaller valve? John Z. and I have talked for a while about not needing such a large exhaust valve on these heads. Can't wait to see it hit the track. I don't think an 8.50 cert. is going to be enough.
Congrats Wayne. What I see in those pics is pretty clear. Your level of commitment to this project is what is really so unusual. In a world full of mail order Brand X 1000HP motors, you had the patience, and the ability/will to fund a project that must have seemed like a never ending black hole of money at times. Looks like a good way to spend 30K+. Few are able to do that, and even fewer are willing. But the $$ is not the worst thing. The waiting must have been killer. I can imagine the time frames. My hat's off to you for seeing it thru! your Patience and funding have been rewarded, and you deserve all the accolades that come your way. I look forward to it's performance in your car. JW
