Low deck Indy 540 on the dyno
#3222925
03/26/24 03:42 PM
03/26/24 03:42 PM
|
Joined: Jan 2003
Posts: 30,998 Oregon
AndyF
OP
I Win
|
OP
I Win
Joined: Jan 2003
Posts: 30,998
Oregon
|
Low deck 540, Indy aluminum block, Indy 440-1 heads, Indy 400-2 intake. Roller cam but owner didn't have cam card, thinks it is an Indy cam. 1050 carb. Drag race engine. Owner was told it makes 900 hp but we'll see. We're getting it ready to run now, should have numbers later in the week. Engine has some good parts in it, Jesel belt drive, T&D rockers, etc.
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3222958
03/26/24 06:24 PM
03/26/24 06:24 PM
|
Joined: Jan 2003
Posts: 9,986 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
|
master
Joined: Jan 2003
Posts: 9,986
Frostbitefalls MN (Rocky&Bullw...
|
900 hp with 440-1 is doable, but a high water mark. This will be interesting, especially all the parts that went into it. If i remember correctly your 514 build left few stones unturned in the quest for NA power at that level .
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: 6PKRTSE]
#3223031
03/27/24 07:13 AM
03/27/24 07:13 AM
|
Joined: Jan 2003
Posts: 4,045 Shelby Twp. Mi
HardcoreB
master
|
master
Joined: Jan 2003
Posts: 4,045
Shelby Twp. Mi
|
Assuming it's one I saw listed not long ago with car and performance numbers... I'd guess 800. Like has been said it has some pretty nice pieces and still not a bad motor performance-wise!
Last edited by HardcoreB; 03/27/24 07:16 AM.
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: HardcoreB]
#3223045
03/27/24 09:50 AM
03/27/24 09:50 AM
|
Joined: Mar 2003
Posts: 2,497 PA
moparacer
top fuel
|
top fuel
Joined: Mar 2003
Posts: 2,497
PA
|
That is pretty much exactly what I want to build for my car.
Any idea on compression? Will have to be pretty high to get 900.
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3223056
03/27/24 10:35 AM
03/27/24 10:35 AM
|
Joined: Jan 2003
Posts: 17,841 S.E. Michigan
ZIPPY
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 17,841
S.E. Michigan
|
Awesome.
Agree with previous post, I'd expect a 13:1 compression ratio and up.
Rich H.
Esse Quam Videri
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3223066
03/27/24 10:53 AM
03/27/24 10:53 AM
|
Joined: Oct 2007
Posts: 403 Laredo, Texas USA
hugo
mopar
|
mopar
Joined: Oct 2007
Posts: 403
Laredo, Texas USA
|
Very similar to mine. My heads were old version of indy 440-1 ported by Larry Smith. Same intake with adapter to dominator also ported by Larry. mine made 890 hp at 7200rpm and 755tq at 5900rpm. This one should be around the same. My compression was 13.9.
Last edited by hugo; 03/27/24 10:54 AM.
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: cl440]
#3223153
03/27/24 02:43 PM
03/27/24 02:43 PM
|
Joined: Jan 2003
Posts: 30,998 Oregon
AndyF
OP
I Win
|
OP
I Win
Joined: Jan 2003
Posts: 30,998
Oregon
|
Only way it gets close is if the heads are fully ported equal to the 345CC versions and the cam is large enough to support the airflow needed to make 900hp. I think its gonna be good but fall somewhere in the 850 range give or take 20. It does have the CNC 345 heads on it and the cam specs on the old build sheet are 282/290 R113. I'm not sure if that is an old Indy cam or not. Customer's carb is a Holley 80672 1050 three circuit. It was way too rich so we swapped on the dyno room 1050.
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3223361
03/28/24 01:56 PM
03/28/24 01:56 PM
|
Joined: Jan 2003
Posts: 16,923 NC
440Jim
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,923
NC
|
It does have the CNC 345 heads on it and the cam specs on the old build sheet are 282/290 R113. I'm not sure if that is an old Indy cam or not. Customer's carb is a Holley 80672 1050 three circuit. It was way too rich so we swapped on the dyno room 1050. 282/290 on 113 LSA sounds good to me. With at least 13.0 CR, it should make good power 840-875 Close to Indy cam specs, but not a match. What size dia & length are the dyno headers. That will affect things too.
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: gregsdart]
#3225248
04/05/24 03:10 PM
04/05/24 03:10 PM
|
Joined: Jan 2003
Posts: 30,998 Oregon
AndyF
OP
I Win
|
OP
I Win
Joined: Jan 2003
Posts: 30,998
Oregon
|
That engine didn't do as well as expected. It made 815 hp at 6900 RPM. The vacuum pump that the customer brought was wore out so it didn't pull much vacuum. Once he gets his pump rebuilt the engine will probably make around 825. Not sure why the power was down. The parts he had seemed capable of more. I'm not a fan of using a 4500 to 4150 adapter on a 400-2 intake but the customer was told that the necked down intake made more power. I would've liked to see what a ported 400-3 intake would do on the engine but we didn't have one to try.
One interesting footnote is that we're currently running a 428 inch SBC on the dyno that is making 795 hp. Cam specs are almost identical between the two engines, and we're using the same 1050 Dominator dyno carb. The 540 Mopar had less rocker arm ratio than the 428 SB so that could've been part of the issue.
Next motor on the dyno is a 540 inch BBC with very similar specs. Same compression, cam specs, carb, etc. It will be interesting to see how it does. I think the heads on the BBC are bigger so that might work in its favor.
Last edited by AndyF; 04/05/24 03:13 PM.
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3225255
04/05/24 03:36 PM
04/05/24 03:36 PM
|
Joined: Jan 2003
Posts: 19,361 Las Vegas
Al_Alguire
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 19,361
Las Vegas
|
Always going to make more power with a dedicated 4500 intake. Seen it a number of times for sure.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3225256
04/05/24 03:39 PM
04/05/24 03:39 PM
|
Joined: Jan 2003
Posts: 14,493 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,493
So. Burlington, Vt.
|
Frankly, the 815 seems about right to me for that combo. On the dyno here, a similarly built 572 with 14:1 made 878……. So at the same hp/ci a 540 would be 829.
A 14:1 542 with 572-13’s and the 440-3x made 860.
-1/345’s flow about 380 on my bench.
In the BBC world, those would be pretty mediocre flow numbers for heads getting used on a 540” build.
What was the peak TQ, and at what rpm?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
Re: Low deck Indy 540 on the dyno
[Re: AndyF]
#3225281
04/05/24 06:49 PM
04/05/24 06:49 PM
|
Joined: Jan 2003
Posts: 14,493 So. Burlington, Vt.
fast68plymouth
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 14,493
So. Burlington, Vt.
|
Sounds like he should look into getting his carb reworked.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
|
|
|
|
|