pauldana

motorhead and I win!!!!!


that makes 2 correct calls for me:-)

yours and Diehards...

KJL

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.

C3 Stroker

Congrats! Those are great numbers!!!!......was a Dominator carb used on the dyno?

Les

Congrats! That's going to be wicked fun!

KJL

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!)

KJL

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.

toddalin

Very nice numbers. Glad they didn't blow it up getting there.

427Hotrod

That's going to be a HECK of a lot of fun!!

Congratulations!!

JIM

KJL

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.

pauldana

I will do an overlay of your Dyno and mine.... I think it is the cam that makes the difference... and your odd bump.

KJL

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.

pauldana

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.

KJL

I will take me awhile to get her back in the car. Still on the fence regarding the transmission upgrade. I got the trany with the 0.82 and am glad I did. Don't need to down shift to pass!

StraubTech

Nice build KJL. Did they monitor the oil pressure on the pulls? What fuel did they use? How much timing in the engine? What size is the dyno header? Is that a 1" or 2" spacer on the intake?

KJL

Yes, hovered around 65 psi until 6000 then dropped off a tad to 63.
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.

uxojerry

Looks like a great engine. What size AFR heads were used?

StraubTech

Why do we have a J tube carb on the build?

scott foxwell

I agree that the curve looks funny but that "type" of curve is very consistent with too much cylinder head and cam focusing on big peak dyno numbers and not good usable average power. Great on the drag strip when you can keep everything above 6000 rpm but I'm afraid it's going to be disappointing on the street.
Even at that, however, I highly doubt that the dyno is accurate.

KJL

245's

KJL

The builder builds a lot of racing engines for boats and over the years prefers them over straight tubes. (Obviously a boat carb he had sitting on the shelf)