Congrats! Those are great numbers!!!!......was a Dominator carb used on the dyno?
Engine Dyno Day is Next Week!
Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
Congrats!! Your build inspired me. Never would have done it otherwise. Interesting to note however, I did gain in HP significantly over my 427 but only a marginal gain in Torque. I had 485 at the rear wheels with my old setup. It will be interesting if it feels different.
Race Director
Joined: Dec 1999
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From: Sierra Foothills CA
I am was presently surprised at how great the engine looked and all the extras that were done. The total even came in less than the original quote. It was worth the wait although frustrating at times.
The numbers:
I will need to plot the numbers to see the curve and I will scan and upload the data when I get a chance.
Peak HP 695 @ 6500 rpm
Peak Tq 600 @ 5000 rpm
I am happy with the numbers.
The numbers:
I will need to plot the numbers to see the curve and I will scan and upload the data when I get a chance.
Peak HP 695 @ 6500 rpm
Peak Tq 600 @ 5000 rpm
I am happy with the numbers.
Congrats! That's going to be wicked fun! 
Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
No, it was a custom 4150. The name on the carb is David Smith. Heck, the carb even has an electric choke for Pete's sake. I will post some pics. It was tested with all the components I am using except the headers, exhaust and fuel pump. (Carb turned out to be a POS, I quite honestly don't know how he dyno tested the carb with the jetting he used. The primaries were 94's! they are now 78!)
Last edited by KJL; Feb 15, 2018 at 11:08 AM.
Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
Noticed a 52 hp jump between 6000 and 6200 rpm. This seems a bit late for secondaries. Possibly the ugliest curve I have ever seen.
Last edited by KJL; Feb 15, 2018 at 11:05 AM.
Race Director
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
That's going to be a HECK of a lot of fun!!
Congratulations!!
JIM
Congratulations!!
JIM
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Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
I spoke with the builder regarding the jump in power at 6000 rpm. He gave me a lot of facts and figures I really didn't understand. Something still doesn't seem right with that curve. The engine up until that point isn't pulling much stronger than my original 427 combination. If all that extra money that I paid was only for a 50 HP bump above 6000 rpm, I would have reconsidered my component choices. Up to that point, Paul's engine and mine appear to be very similar. After the chassis dyno results are in I should have a better comparison between my old 427, Paul's 427 and the new 434. For comparison I applied an 18% line loss to my numbers.
Race Director
Joined: May 2003
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From: California
I spoke with the builder regarding the jump in power at 6000 rpm. He gave me a lot of facts and figures I really didn't understand. Something still doesn't seem right with that curve. The engine up until that point isn't pulling much stronger than my original 427 combination. If all that extra money that I paid was only for a 50 HP bump above 6000 rpm, I would have reconsidered my component choices. Up to that point, Paul's engine and mine appear to be very similar. After the chassis dyno results are in I should have a better comparison between my old 427, Paul's 427 and the new 434. For comparison I applied an 18% line loss to my numbers.
Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
Also, how does your TKO shift? I never really noticed with mine because I never did much high RPM shifting. I was thinking about installing the Liberty Gear upgrade while the transmission was out. Did some research on the web and found there are many differing opinions regarding the cause and the fix. Looks like I could do it myself, just need to carefully document the disassemble etc.
Race Director
Joined: May 2003
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From: California
That would be interesting to see. I need to get a copy of the May issue of CHP and check out their 434 build.
Also, how does your TKO shift? I never really noticed with mine because I never did much high RPM shifting. I was thinking about installing the Liberty Gear upgrade while the transmission was out. Did some research on the web and found there are many differing opinions regarding the cause and the fix. Looks like I could do it myself, just need to carefully document the disassemble etc.
Also, how does your TKO shift? I never really noticed with mine because I never did much high RPM shifting. I was thinking about installing the Liberty Gear upgrade while the transmission was out. Did some research on the web and found there are many differing opinions regarding the cause and the fix. Looks like I could do it myself, just need to carefully document the disassemble etc.
when you do, i have a Dyno thread, i will post it there as well with the overlay/.....
what I'm trying to do there is show a bunch of dyno runs with different engines, and specs,,, this way we can all make better choices... and maybe less guessing... hoping... :-)
TKO600
SUCKS... yea, you are right... I will do the mods on mine as well, but I will also be changing the cluster gear and chucking the .64od for a usable .82od... my 1st big mistake with this transmission... the second was not reading and doing enough research before i purchased the TKO... if i had, I would have put in the kit BEFORE i ever installed the transmission... this transmission needs work to be race ready... the 3-4 and 4-3 SUCK in stock configuration.
Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
Overly will be best with a chassis dyno... when are you getting that?
when you do, i have a Dyno thread, i will post it there as well with the overlay/.....
what I'm trying to do there is show a bunch of dyno runs with different engines, and specs,,, this way we can all make better choices... and maybe less guessing... hoping... :-)
TKO600
SUCKS... yea, you are right... I will do the mods on mine as well, but I will also be changing the cluster gear and chucking the .64od for a usable .82od... my 1st big mistake with this transmission... the second was not reading and doing enough research before i purchased the TKO... if i had, I would have put in the kit BEFORE i ever installed the transmission... this transmission needs work to be race ready... the 3-4 and 4-3 SUCK in stock configuration.
when you do, i have a Dyno thread, i will post it there as well with the overlay/.....
what I'm trying to do there is show a bunch of dyno runs with different engines, and specs,,, this way we can all make better choices... and maybe less guessing... hoping... :-)
TKO600
SUCKS... yea, you are right... I will do the mods on mine as well, but I will also be changing the cluster gear and chucking the .64od for a usable .82od... my 1st big mistake with this transmission... the second was not reading and doing enough research before i purchased the TKO... if i had, I would have put in the kit BEFORE i ever installed the transmission... this transmission needs work to be race ready... the 3-4 and 4-3 SUCK in stock configuration.
Thread Starter
Melting Slicks
Joined: Nov 2000
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From: Bogart GA
He used a 50/50 mix of race gas and 93 octane. The timing is 18 initial with a total of 32. Not sure when it was all in. Not 100% regarding dyno header, looking at the picture I would say no more than 1.75". I have some 1.875's I am putting on and they look bigger than that. That is am AFR 1" spacer. I used a 2" spacer on my 427 but this intake is taller and I don't think it will fit without playing games with the air cleaner. I will post the dyno data sheets tomorrow. I am glad Paul is cataloging all this great data. I will also see if I can get the data from my 427 runs.
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From: piney flats tn
I spoke with the builder regarding the jump in power at 6000 rpm. He gave me a lot of facts and figures I really didn't understand. Something still doesn't seem right with that curve. The engine up until that point isn't pulling much stronger than my original 427 combination. If all that extra money that I paid was only for a 50 HP bump above 6000 rpm, I would have reconsidered my component choices. Up to that point, Paul's engine and mine appear to be very similar. After the chassis dyno results are in I should have a better comparison between my old 427, Paul's 427 and the new 434. For comparison I applied an 18% line loss to my numbers.
Even at that, however, I highly doubt that the dyno is accurate.
Thread Starter
Melting Slicks
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From: Bogart GA