Big Poppa's 514 dyno

I carried Kerrys 514 4.440 bore 4.150 stroke engine to the dyno this weekend. His internet is down and he asked me to post this.

14:1 compression, A 429 pre 5000 serial number (clippers). 2.250 intake and a 1.71 exhaust. flow was around 385-390 @ .800 lift exhaust was 240@ .800

We pulled it on gas (Q-16 and Alcohol) gas was a 1250 QFX Quick Fuel, alcohol was a 2100 cfm Rons terminator. Mafia intake.

Gas peak HP was 866 @ 6200-6300-6400 and peak TQ was 771 @ 4600 34 degrees of timing.

Alk peak HP was 869 @ 6500 and peak TQ was 780 @ 5100 33 degrees of timing.

Afr on gas was 13.20-13.45 exhaust temps were 1200 - 1250.

AFR on Alky was 5.25-5.50 exhaust temps were cool around 950 - 1000.

We fattened and leaned it and added timing and took it away on alcohol but in the end it made the most power around 1000 degrees and 33 degrees of timing. went as high as 40 and it kept losing power.

Headers were dyno-tech big block Chevy's with a adapter to the ford head, 2 1/4 to 2 3/8, 32 inch long primaries with a 5 inch collector.

Makes you wonder if you can get too big a carb or too big a header on these engines. They always amaze me.

what are you cam specs or part number with brand

Wow, Those are some really big numbers from a 4.15 stroke 514, carb doesn't follow the rules nor do the headers... How high did you spin it, the posted RPM numbers are conservative for peak HP at least with a 4.15? Also holding the peak HP for 300 RPM is also impressive.

How low did you go with timing on alky? I would have figured less would net more..... great numbers!

cool40 wrote:How low did you go with timing on alky? I would have figured less would net more..... great numbers!

. 33 is as low as we went. Everybody says higher timing on alky, but this deal didn't like more.

o henry wrote: what are you cam specs   or part number with brand

. Custom Comp Cams grind by me. 269/283 on a 109 good fast lobes and a fast port.

FalconEh wrote:Wow, Those are some really big numbers from a 4.15 stroke 514, carb doesn't follow the rules nor do the headers... How high did you spin it, the posted RPM numbers are conservative for peak HP at least with a 4.15? Also holding the peak HP for 300 RPM is also impressive.

. I carried it to 7000 but it nosed over at 6500. It made 866 at 62-63-6400 rpm and didn't lose much at 6500, but fell of after that.

OMG what just Amazes me is you did all this without consulting the God of All Gods on your cam and heads

in the Future Cartwright remember you can't do this with out consulting the Professionals. end of subject.


Oh and Up yours Cartwright

yours truly Albert

Dang ALBERT,  you need a valium bad.

Merry Christmas to you too Albert

IDT-572 wrote:I carried Kerrys 514 4.440 bore 4.150 stroke engine to the dyno this weekend. His internet is down and he asked me to post this.

14:1 compression, A 429 pre 5000 serial number (clippers). 2.250 intake and a 1.71 exhaust. flow was around 385-390 @ .800 lift exhaust was 240@ .800

We pulled it on gas (Q-16 and Alcohol) gas was a 1250 QFX Quick Fuel, alcohol was a 2100 cfm Rons terminator. Mafia intake.

Gas peak HP was 866 @ 6200-6300-6400 and peak TQ was 771 @ 4600 34 degrees of timing.  

Alk peak HP was 869 @ 6500 and peak TQ was 780 @ 5100  33 degrees of timing.

Afr on gas was 13.20-13.45 exhaust temps were 1200 - 1250.

AFR on Alky was 5.25-5.50  exhaust temps were cool around 950 - 1000.  

We fattened and leaned it and added timing and took it away on alcohol but in the end it made the most power around 1000 degrees and 33 degrees of timing. went as high as 40 and it kept losing power.

Headers were dyno-tech big block Chevy's with a adapter to the ford head, 2 1/4 to 2 3/8, 32 inch long primaries with a 5 inch collector.

Makes you wonder if you can get too big a carb or too big a header on these engines. They always amaze me.

Very nice power Blake.....Very nice.

IDT-572 wrote:

cool40 wrote:How low did you go with timing on alky? I would have figured less would net more..... great numbers!

.      33 is as low as we went. Everybody says higher timing on alky, but this deal didn't like more.

Alcohol will WITHSTAND more timing but, will not necessarily want more for peak power.

rmcomprandy wrote:

IDT-572 wrote:

cool40 wrote:How low did you go with timing on alky? I would have figured less would net more..... great numbers!

.      33 is as low as we went. Everybody says higher timing on alky, but this deal didn't like more.

Alcohol will WITHSTAND more timing but, will not necessarily want more for peak power.

I believe it Randy...........

Albert Clark wrote:OMG what just Amazes me is you did all this without consulting the God of All Gods on your cam and heads  

in the Future Cartwright remember you can't do this with out consulting the Professionals. end of subject.


Oh and Up yours Cartwright

yours truly Albert

The only defined difference between a Professional and an amateur hobbiest is that the Pro gets paid; talent level has nothing to do with it. Although , previous experiences probably do.

Straubtech wrote:

IDT-572 wrote:I carried Kerrys 514 4.440 bore 4.150 stroke engine to the dyno this weekend. His internet is down and he asked me to post this.

14:1 compression, A 429 pre 5000 serial number (clippers). 2.250 intake and a 1.71 exhaust. flow was around 385-390 @ .800 lift exhaust was 240@ .800

We pulled it on gas (Q-16 and Alcohol) gas was a 1250 QFX Quick Fuel, alcohol was a 2100 cfm Rons terminator. Mafia intake.

Gas peak HP was 866 @ 6200-6300-6400 and peak TQ was 771 @ 4600 34 degrees of timing.  

Alk peak HP was 869 @ 6500 and peak TQ was 780 @ 5100  33 degrees of timing.

Afr on gas was 13.20-13.45 exhaust temps were 1200 - 1250.

AFR on Alky was 5.25-5.50  exhaust temps were cool around 950 - 1000.  

We fattened and leaned it and added timing and took it away on alcohol but in the end it made the most power around 1000 degrees and 33 degrees of timing. went as high as 40 and it kept losing power.

Headers were dyno-tech big block Chevy's with a adapter to the ford head, 2 1/4 to 2 3/8, 32 inch long primaries with a 5 inch collector.

Makes you wonder if you can get too big a carb or too big a header on these engines. They always amaze me.

Very nice power Blake.....Very nice.

Thanks Chris, A ton of time went into this deal................

my 514 is same short block ,,my comp cam part #34-999-3 has at 50, 280 in. 286 ex but had to advance 2 degrees to bring to life,,,cars slug down low comes on midway down track ...best et was 569 with 126 60ft at 121 mph.. looking for advise on new cam ? i am told do not worry about 60 ft , but it drives me crazy not to.

o henry wrote:my 514 is same short block ,,my comp cam part #34-999-3 has  at 50, 280 in. 286 ex  but had to advance 2 degrees to bring to life,,,cars slug down low comes on midway down track ...best et  was 569 with 126 60ft  at 121 mph.. looking for advise on new cam ?  i am told do not worry about 60 ft , but it drives me crazy not to.

If your running a 3000 lb car, that 514 is doing a good job. What does it weigh?

2850 with me in it

o henry wrote:2850 with me in it

It probably is making good power by the mph, is the converter too tight? What does it flash too?

Very nice!  Rather than a handful of Q's, can you post a dyno sheet?   Also, what block?

flashes at 6000

Paul Kane wrote:Very nice!  Rather than a handful of Q's, can you post a dyno sheet?   Also, what block?

I will see what I can do

IDT-572 wrote:

cool40 wrote:How low did you go with timing on alky? I would have figured less would net more..... great numbers!

.      33 is as low as we went. Everybody says higher timing on alky, but this deal didn't like more.

Most of the time it's better to forget what you heard and just believe what you witness.

BTW....good job.

Lem Evans wrote:

IDT-572 wrote:

cool40 wrote:How low did you go with timing on alky? I would have figured less would net more..... great numbers!

.      33 is as low as we went. Everybody says higher timing on alky, but this deal didn't like more.

Most of the time it's better to forget what you heard and just believe what you witness.

BTW....good job.

True, and thank you Lem.............

Paul, I tried to post them but couldn't make it happen.

Send me your email addy and I will email them to you.

IDT-572 wrote:

Paul Kane wrote:Very nice!  Rather than a handful of Q's, can you post a dyno sheet?   Also, what block?

I will see what I can do

D1 block 2 bolt main. Offset ground stock crank.