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[ Next Thread | Previous Thread | Next Message | Previous Message ] Date Posted: 04/24/07 8:26am Author: Bam-Bam Subject: HP per Pound I just have to bring up the small block issue one more time. So shoot me... OK some of the top performers are claiming 1100 HP from a 540 cubic BB engine. So I did a little math and that equals 2.14 HP per Pound. It also equals 2.04 HP per Cubic inch. Which is pretty amazing considering the rules. Looking at the SB rules which haven't changed in 3 to 4 years. Are you Small Block Guru's telling me you can't make 980 hp ? Now I am no engine guy. I can assemble one and know how they work but don't assume I am an authority on the subject. So come on take me to school on the subject. 980 HP at 2100 lbs which is about as light as you can go. ought to run with the BB'S Right or am I way off Base. [ Next Thread | Previous Thread | Next Message | Previous Message ] Replies: [> Small Blocks in TPSA -- "Pigman", 04/24/07 9:55am I took another look at the rules and it looks like 2250# would be minimum weight for a competitive 18 degree, sheetmetal tunnelram w/ 2 carbs. 23 degree head would save 100# but I don't think it would be a good trade off. Now find you a GOOOOD head porter. If the heads won't kick ass you're fixin' to waste a bunch of $$$. Put this thing together using all the latest technology (dry sump, big cam, slot lifters, light rods,light pistons, etc.)and get ready to turn it 10,000 rpm. Put it in a GOOOOD car on a short tire with a steep (5.71+) gear and hang on. It ought to be competitive, it might even win, but it's gonna love valve springs and its probably going to want rods, pistons, and rings every 100 runs (we changed every 50 or so in Pro Truck). By the way this ain't no cheap motor in case you ain't figured that out yet. Good luck and see you at the races. [Edit] [> Ok so I didn't read the rules al the way to the end... And I agree they would be some valve spring eatin rascals. Just another question though since there is no cubic inch limit. would it be feasable to build more cubes there by lowering the 10000 rpm needed to make that power? -- Bam-Bam, 04/24/07 12:30pm [Edit] [> Small Blocks in TPSA -- "Pigman", 04/24/07 1:06pm Biggest one I ever considered was 430c.i.. You won't turn something that big up to 10 grand but I'd expect to turn it 9400-9500. Cylinder heads are going to control bore spacing and bore spacing will control how big you can build the motor. When it's all said & done I just don't think it will be strong enough to stop Otwell or Naylor. [Edit] [> SB -- SB, 04/24/07 2:45pm FACE THE FACTS: THE SBC WILL RUN WITH THE TOP DOGS. BUT YALL ARE SO CHICKEN TO LET THE CANTED VALVE SB RUN . THE 18%WONT CUT IT UNLESS ITS 2000 LB [Edit] [> Thanks I guess that answers that. -- Bam-Bam, 04/24/07 4:15pm [Edit] [> nonsense -- big, 04/24/07 8:20pm I say let the guy spend the 100k on a canted valve. tell him PIG you know. I know of a 465 canted valve they do turn 10g's. always someone who wants to re-invent the wheel. [Edit] [> well considering Raymond Martin makes over 900 hp out of a inline 4 banger (no power adders) says to me it only cost money -- Dreamweaver, 04/24/07 8:53pm [Edit] [> like I said in the above post the new lsx block will go out to 500 ci and that worries me since I don't have deep pockets like some of my friends ...this is why I've stated we need to adjust the rules to a straight ci to weight scale and yes from what I've seen the block will handle high hp numbers this block was designed by warren so... -- Dreamweaver, 04/24/07 9:16pm [Edit] [> I thought we had a CI to weight in place now. -- Maybe I cant read, 04/24/07 10:18pm [Edit] [>  We're researching the LSX block now. The BBC's are limited to 4.840 bore spacing, 9.800 or 10.200 deck height only, which makes some blocks illegal in TPSA and the LSX may fall into the same catagory for much the same reasons. The SBC debate always gets the board going, but don't look for any SBC rule changes regarding heads or valve angle. A while back, VooDoo posted some info on some trick new 18* SBC stuff that he thought might be competitive. Could be an option for a die hard SBC racer, but there's not much time between rounds for normal maintenance of a 10,000 rpm SBC at one of our events. For more SBC discussions, check out the archives. -- DH, 04/25/07 1:00am [Edit] [> Received this history lesson via email from Rick Hanson: "This is the second race of the season in late 02. We were #1 qualifier with a 5.43 with my old 496 injected on alcohol. Time marches on!! It was a gorgeous Saturday morning and I was on the radio on the Car Doctor ( Skeeter Lothringer ) show promoting the heck out of TPSA for Mike and Mark. Skeeter is a friend of mine and he was looking for something new for his show. Chad was driving that day. I had to go to my service managers wedding. ( Priorities??!! ) I don't recollect the outcome of the round."  Rick & Chad Hanson have been involved with the TPSA since it's inception, and have many great stories to tell. Today, if you want the TPSA record, you must run quicker than a 4.699! That's a long way from that 5.43 just five short years ago...... -- historian, 04/25/07 2:23am [Edit]
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