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Motor is going on dyno next week want to guess the Hp

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Post  5pointslow February 1st 2024, 9:15 am

supervel45 wrote:
5pointslow wrote:I was thinking lower #s based on it has a 2.190 intake valve still and heads are not ported and my headers on dyno are nothing special used and clearanced for steering shaft hooker 2 inch primary fox swap headers

now my issue I need to figure is my gearing i have a 4.10 and on a 28inch tire . Most likely going to a 3.73 gear but now i'm tempted to go 3.55 but maybe to much . I'm bracket racing so i don't have to be on kill all out but hopefully traction . Went 6800 before through traps at 133-135 mph at 9.70s

Try the 4.10's first and see how they do.

with my current 4.10s and 28 i would go through traps at 6800 so it needs to be dropped to 3.73 in my opinion just based on more power and mph i'm assuming
I'm going to make a new thread in the proven build section once i pick the motor up next week ( its 2 hours away from me ) . I don't want to have this in the engine tech section causing any issues .

if anyone wanted to know as I'm not familiar but it was dyno'd on a stuska dyno . Tom Boucher races as well in super stock for years and is well known in north east and won in 92 us nationals in super stock
http://www.bouchersracing.com/Dyno/index.html
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Post  rmcomprandy February 1st 2024, 11:34 am

5pointslow wrote:

with my current 4.10s and 28 i would go through traps at 6800 so it needs to be dropped to 3.73 in my opinion just based on more power and mph i'm assuming


if anyone wanted to know as I'm not familiar but it was dyno'd on a stuska dyno . Tom Boucher races as well in super stock for years and is well known in north east and won in 92 us nationals in super stock
http://www.bouchersracing.com/Dyno/index.html

That gear change would have been about 400 RPM at that time.

Good Job ...

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Post  supervel45 February 1st 2024, 1:30 pm

maverick172 wrote:i would say 720hp i have a very similar combo with scj heads runs 8.85 in my altered 151mph 502 cid .. what is your stroke and bore by chance tp get a 510ci ?
5pointslow wrote:My motor is going on dyno next week

510 ci
Edelbrock heads not port just matched to viktor intake
fordged crank from lunati
h beam rods
probe piston
compression at 13.1
electric water pump
vp 113 fuel
davinhci dominator
Kaase K1 solid roller cam
stefs pan with kaase pump

I just want to race again and want it to run great but Im guessing 700-715 Hp

Motor is going on dyno next week want to guess the Hp  - Page 2 20240110

4.42" Bore X 4.15 Stroke = 509.42 CID

Your 502 and this one are very similar. 12.6 or so, Comp. vs. 13. The Ported SVO Cobra Jets you have is the biggest difference I see. Plus that steal you made buying it. Smile

Icon Makes a 6.8" Rod 502 piston is why I asked about the rod length.

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Post  G-Code February 1st 2024, 2:21 pm

5pointslow wrote:

Yes all new valves in heads have been all gone through and replaced , yeah I know the heads are the deciding factor but I'm index and bracket racing. The old combo went 9.70s and the car has a whole I didn't want to be in the high 8s bottom bottom 9s which if i went p51 heads or sr71s along those lines would have done . I'm hopeful for a 9.50 and I can back it down shift point so it is reliable . That's why I did the 510 vs bigger cubes as just didn't think was needed

I have a few spacers and have one on the motor already that can be tried .

This won't win any hp awards I get it .....I used the top end I had .

Do you have flow numbers on the heads ?

720 hp out of 510 cu. in is just 1.41 hp per cube. I SURE hope the ol' Blue Oval can do better than that? ......

I'm sure it will. Good luck with it.

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Post  5pointslow February 1st 2024, 2:29 pm

G-Code wrote:
5pointslow wrote:

Yes all new valves in heads have been all gone through and replaced , yeah I know the heads are the deciding factor but I'm index and bracket racing. The old combo went 9.70s and the car has a whole I didn't want to be in the high 8s bottom bottom 9s which if i went p51 heads or sr71s along those lines would have done . I'm hopeful for a 9.50 and I can back it down shift point so it is reliable . That's why I did the 510 vs bigger cubes as just didn't think was needed

I have a few spacers and have one on the motor already that can be tried .

This won't win any hp awards I get it .....I used the top end I had .

Do you have flow numbers on the heads ?

720 hp out of 510 cu. in is just 1.41 hp per cube.  I SURE hope the ol' Blue Oval can do better than that? ......

I'm sure it will.   Good luck with it.

the heads are not ported so im not sure flow #s but it made 760 at 6800 and 678 tq at 4800
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Post  5pointslow February 1st 2024, 2:30 pm

rmcomprandy wrote:
5pointslow wrote:

with my current 4.10s and 28 i would go through traps at 6800 so it needs to be dropped to 3.73 in my opinion just based on more power and mph i'm assuming


if anyone wanted to know as I'm not familiar but it was dyno'd on a stuska dyno . Tom Boucher races as well in super stock for years and is well known in north east and won in 92 us nationals in super stock
http://www.bouchersracing.com/Dyno/index.html

That gear change would have been about 400 RPM at that time.

Good Job ...

Thanks Randy
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Post  maverick172 February 1st 2024, 3:42 pm

supervel45 wrote:
maverick172 wrote:i would say 720hp i have a very similar combo with scj heads runs 8.85 in my altered 151mph 502 cid .. what is your stroke and bore by chance tp get a 510ci ?
5pointslow wrote:My motor is going on dyno next week

510 ci
Edelbrock heads not port just matched to viktor intake
fordged crank from lunati
h beam rods
probe piston
compression at 13.1
electric water pump
vp 113 fuel
davinhci dominator
Kaase K1 solid roller cam
stefs pan with kaase pump

I just want to race again and want it to run great but Im guessing 700-715 Hp

Motor is going on dyno next week want to guess the Hp  - Page 2 20240110

4.42" Bore X 4.15 Stroke = 509.42 CID

Your 502 and this one are very similar. 12.6 or so, Comp. vs. 13. The Ported SVO Cobra Jets you have is the biggest difference I see. Plus that steal you made buying it. Smile

Icon Makes a 6.8" Rod 502 piston is why I asked about the rod length.
ya i am thinking of selling my 502 if this other engine i have my eye goes through. the 502 is a stout engine . but wanting into the low 7's or 6's with the altered

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Post  5pointslow February 9th 2024, 1:14 pm

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Post  hbstang February 9th 2024, 6:24 pm

it sure likes that cam and compression! cyclops
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Post  5pointslow February 9th 2024, 6:47 pm

hbstang wrote:it sure likes that cam and compression! cyclops

Little more cubes as well
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Post  supervel45 February 11th 2024, 5:44 am

5pointslow wrote:I was thinking lower #s based on it has a 2.190 intake valve still and heads are not ported and my headers on dyno are nothing special used and clearanced for steering shaft hooker 2 inch primary fox swap headers

now my issue I need to figure is my gearing i have a 4.10 and on a 28inch tire . Most likely going to a 3.73 gear but now i'm tempted to go 3.55 but maybe to much . I'm bracket racing so i don't have to be on kill all out but hopefully traction . Went 6800 before through traps at 133-135 mph at 9.70s

Motor is going on dyno next week want to guess the Hp  - Page 2 20240210


I don't know if you have looked at the Wallace Gear Comparison Calculator but it's pretty handy, I think.

I used 1.065 for the final transmission drive ratio, to allow for torque convertor slip and because it lines up pretty close to your 132 MPH at 6,800 RPM ( 9.771@132.01MPH) from the Old Engine.

If you look at the 1,000 RPM and the 7,000 RPM numbers you will notice a 3.9 gear picks up about 7MPH and a 3.7 gear  about 14MPH, over the 4.10's. At 1,000 RPM it's a 1 and 2 MPH difference/increase between the 3, and a proportional increase all the way up the scale. It's Just another way to look at it, to make it easier to see the difference in the change, I noticed.

Depending on what you do to the Torque Convertor, I think one of those will be pretty close.




Motor is going on dyno next week want to guess the Hp  - Page 2 20240211

At 2,950Lbs. and 760 HP it Calculates to 9.15ET and 147.63MPH

Like the Calculations from your last engine, I would knock around 30 or so HP off the top for more real world performance, with driveline losses, ect., and call it in the mid 140's.

The reason I said to try the 4.10's first, is it is always a good idea not to make too many changes at once, so you can see the affect better for the next change.

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Post  dfree383 February 11th 2024, 8:09 am

Should run good
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Post  5pointslow February 11th 2024, 9:20 am

supervel45 wrote:
5pointslow wrote:I was thinking lower #s based on it has a 2.190 intake valve still and heads are not ported and my headers on dyno are nothing special used and clearanced for steering shaft hooker 2 inch primary fox swap headers

now my issue I need to figure is my gearing i have a 4.10 and on a 28inch tire . Most likely going to a 3.73 gear but now i'm tempted to go 3.55 but maybe to much . I'm bracket racing so i don't have to be on kill all out but hopefully traction . Went 6800 before through traps at 133-135 mph at 9.70s

Motor is going on dyno next week want to guess the Hp  - Page 2 20240210


I don't know if you have looked at the Wallace Gear Comparison Calculator but it's pretty handy, I think.

I used 1.065 for the final transmission drive ratio, to allow for torque convertor slip and because it lines up pretty close to your 132 MPH at 6,800 RPM ( 9.771@132.01MPH) from the Old Engine.

If you look at the 1,000 RPM and the 7,000 RPM numbers you will notice a 3.9 gear picks up about 7MPH and a 3.7 gear  about 14MPH, over the 4.10's. At 1,000 RPM it's a 1 and 2 MPH difference/increase between the 3, and a proportional increase all the way up the scale. It's Just another way to look at it, to make it easier to see the difference in the change, I noticed.

Depending on what you do to the Torque Convertor, I think one of those will be pretty close.




Motor is going on dyno next week want to guess the Hp  - Page 2 20240211

At 2,950Lbs. and 760 HP it Calculates to 9.15ET and 147.63MPH

Like the Calculations from your last engine, I would knock around 30 or so HP off the top for more real world performance, with driveline losses, ect., and call it in the mid 140's.

The reason I said to try the 4.10's first, is it is always a good idea not to make too many changes at once, so you can see the affect better for the next change.


I'm going to try 3.73 and I'm sending my convertor to Ptc this week . It's going to be have tightened up a little kenny at ptc said when speaking to them
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Post  5pointslow February 11th 2024, 9:25 am

I'm also going to bring shift point back and launch rpm to get her to a happy spot . Bracket racing I don't need to be all out per say and would like to be in the 9.30 9.40 range

I need to make a thread in proven build section of the motor break down . It's a dove a block that I installed blu thunder caps on not sure if that wasn't mentioned
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Post  AndyF February 11th 2024, 3:34 pm

760 is more than I would've expected from the Edelbrock heads.

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Post  5pointslow February 11th 2024, 8:36 pm

AndyF wrote:760 is more than I would've expected from the Edelbrock heads.

I agree I was thinking 700 to 725 range
Compression is up and went roller cam and more cubes
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Post  5pointslow March 30th 2024, 8:09 pm

Made mistake on cam as I looked at cam card and when I started this thread the came card was at engine builders

Cam is a kaase k1 low lift

.731/.727 lift
109 separation
Duration at .050 272 and 280

If anyone wanted to know
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Post  Dave De March 31st 2024, 12:20 pm

It seems like Edel heads dont get a good reputation but they exceed their expectations most of the time. Makes you wonder what the numbers would be with SCJ's or P-51D's.
In any case your package is happy with everything sized appropriately.
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Post  supervel45 April 13th 2024, 1:14 am

Dave De wrote:It seems like Edel heads dont get a good reputation but they exceed their expectations most of the time. Makes you wonder what the numbers would be with SCJ's or P-51D's.
In any case your package is happy with everything sized appropriately.

Or AFR 295's.

11 more CID and a little higher lift cam, otherwise very similar engines.

https://www.429-460.com/t29201-another-guess-the-hp-thread

My guess if you ran both heads on the same short block it would be maybe 30-40HP difference.

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Post  5pointslow April 13th 2024, 1:17 pm

I just went 9.36 at 143 felt awesome

Went through at 7k rpm

5.96 1/8th mile

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Post  rmcomprandy April 13th 2024, 2:17 pm

5pointslow wrote:I just went 9.36 at 143 felt awesome

Went through at 7k rpm

5.96 1/8th mile


You certainly hit you mark, right between 9.30 and 9.40.
Great job.

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Post  5pointslow April 13th 2024, 4:50 pm

rmcomprandy wrote:
5pointslow wrote:I just went 9.36 at 143 felt awesome

Went through at 7k rpm

5.96 1/8th mile


You certainly hit you mark, right between 9.30 and 9.40.
Great job.

Thanks I appreciate it felt great
Only thing that worried me was after a pass oil is hot if it idles at 1200 rpm oil pressure is in the
Mid 30s but as soon as I touch throttle it goes to 55 to 60 . Has kaase pump and probably nothing to worry about just saw that

Like 35 at hot oil 1200
Say 55 to 60 at 2k on up
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Post  supervel45 April 13th 2024, 5:47 pm

5pointslow wrote:I just went 9.36 at 143 felt awesome

Went through at 7k rpm

5.96 1/8th mile


Excellent Cool

Is that with the 3.73's?

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Post  5pointslow April 13th 2024, 6:29 pm

supervel45 wrote:
5pointslow wrote:I just went 9.36 at 143 felt awesome

Went through at 7k rpm

5.96 1/8th mile


Excellent Cool

Is that with the 3.73's?

Yes and oil pressure I know once hot is fine I was just being a nancy 😅
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Post  5pointslow April 13th 2024, 7:02 pm

https://www.youtube.com/shorts/oK9wwfnIrwc?si=k-1SaxOmex9j-mnK
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