That’s what one builder was trying to get me to go to a couple weeks ago(The Tilley 236 block) but I was wanting to do some digging around to see if there were one any better than the other. If I were to go with one of the billet blocks If I put the 1” deck extension on it. Would that be keeping it in the 14.5 class?The billet stuff is always going to be nicer and obviously a lot stronger. But we’ve proven the tillotson blocks can stand up to mega hp as well. We won the big o tribute this year with Jamie Knopf at the wheel with a tillotson block bored out to 2.815 and a 2.3 stroker crank and a billet cylinder head. Only clone style engine in the main event and gapped the entire field.
That’s what one builder was trying to get me to go to a couple weeks ago(The Tilley 236 block) but I was wanting to do some digging around to see if there were one any better than the other. If I were to go with one of the billet blocks If I put the 1” deck extension on it. Would that be keeping it in the 14.5 class?
I don’t believe you need a deck extension unless you want the ability later on to put a bigger crank in it. I’ve chased the ideal rod ratio in these things and haven’t seen a big enough difference in them that it makes a difference. If you were to go with a tillotson go with the 68mm or the 70mm block and have a guy bore and hone it for you. You can save a little bit of money and go with the 72mm bore from ec but technically it’s not 14.5 legal. It would be 14.512 with a 2.3 stroker crank. You’ll be able to put a conventional style top plate on it instead of the goofy throttle setups I’ve seen on those 72mm blocks without the fuel tank/top plate tabs. Plus you’ll have a bore finished here in the U.S. not from China. I bore them .010 from finished then put them through a couple different heat cycles in my oven, then finish hone them.That’s what one builder was trying to get me to go to a couple weeks ago(The Tilley 236 block) but I was wanting to do some digging around to see if there were one any better than the other. If I were to go with one of the billet blocks If I put the 1” deck extension on it. Would that be keeping it in the 14.5 class?
this block is over 15 cubic inches and it's a twin cylinderBest open small block around. View attachment 13114
I run the 228R with a 308 cam and 28mm mikuni on methanol. I pull 8500-8800 on it regularly.I like the looks of this one but a shortage of rods has everything on halt.
https://www.eccarburetors.com/EC-Tillotson-236R-Engine-Kit
Pretty impressive.I run the 228R with a 308 cam and 28mm mikuni on methanol. I pull 8500-8800 on it regularly.