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Re: Low deck Indy 540 on the dyno
[Re: gregsdart]
#3231348
05/06/24 11:38 AM
05/06/24 11:38 AM
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Joined: Jun 2006
Posts: 5,163
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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If Brodix made the exact same heads to bolt onto a big block Chrysler block people would be afraid to run them because “they would lose torque.”
In fact they would come on here and probably get advised not to use them too.
B/RB std port heads were designed in 1956 and 1957 for 350 and 361 cubic inch engines, and designed to make good part throttle torque and response for use in station wagons and big cars. Chrysler engineers designed a port for performance use at 400+ cubic inches. Its the Max Wedge port, and again, most people seem to be afraid its “too big.”
Theres also the 426 Hemi port, thats a pretty good one I’ve heard.
There is a pretty big difference between most of the engines designed in the mid/late 50s, like the standard B/RB, Buick Olds Pontiac, Ford FE, etc and those designed in the 60s. Hemi in 64, Big Block Chevy in 63/64, Ford 335 and 385, etc. The later stuff all has much better heads and stronger blocks.
Last edited by GTX MATT; 05/06/24 11:51 AM.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Low deck Indy 540 on the dyno
[Re: GTX MATT]
#3231420
05/06/24 03:14 PM
05/06/24 03:14 PM
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Joined: Jan 2003
Posts: 31,050
Oregon
AndyF
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 31,050
Oregon
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The Brodix 540 made pretty good torque. 720 ft lbs @ 6000 rpm and it held on pretty well. The car it is going in has a 6200 stall converter and the guy shifts around 7400 rpm so it should stay in the powerband going down the track. He is thinking it might run an 8.90 once he gets it back to the track. The car runs low 9's now with a 780 hp iron block engine.
This pull was with a 1050 carb. The airflow turbine shows that the engine is using about 1100 cfm so we might try a bigger carb to see if that picks up some power. On the last pull the oil pressure started to drop so the pan needs to come off to see if the oil pump is bad. Always something!
Last edited by AndyF; 05/06/24 03:20 PM.
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Re: Low deck Indy 540 on the dyno
[Re: GTX MATT]
#3231902
05/09/24 12:17 PM
05/09/24 12:17 PM
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Joined: Jul 2009
Posts: 494
IL
EchoSixMike
mopar
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mopar
Joined: Jul 2009
Posts: 494
IL
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If Brodix made the exact same heads to bolt onto a big block Chrysler block people would be afraid to run them because “they would lose torque.”
In fact they would come on here and probably get advised not to use them too.
B/RB std port heads were designed in 1956 and 1957 for 350 and 361 cubic inch engines, and designed to make good part throttle torque and response for use in station wagons and big cars. Chrysler engineers designed a port for performance use at 400+ cubic inches. Its the Max Wedge port, and again, most people seem to be afraid its “too big.”
Theres also the 426 Hemi port, thats a pretty good one I’ve heard.
There is a pretty big difference between most of the engines designed in the mid/late 50s, like the standard B/RB, Buick Olds Pontiac, Ford FE, etc and those designed in the 60s. Hemi in 64, Big Block Chevy in 63/64, Ford 335 and 385, etc. The later stuff all has much better heads and stronger blocks. Agreed, we can see this by how few people use the excellent B1 head series, instead they try to crutch the Indy stuff along well past it's performance window. S/F....Ken M
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Re: Low deck Indy 540 on the dyno
[Re: EchoSixMike]
#3231917
05/09/24 02:56 PM
05/09/24 02:56 PM
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Joined: Jan 2003
Posts: 31,050
Oregon
AndyF
OP
I Win
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OP
I Win
Joined: Jan 2003
Posts: 31,050
Oregon
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The Brodix Mopar stuff is not very complete compared to the Brodix stuff for a BBC. Not very many intake manifolds for one thing. I'm not sure why, Brodix has had 30 years to fill in the holes in the product line but they haven't really done much. They might say the sales are too low to justify it but one reason the sales are low is because the stuff isn't easy to bolt on and use.
At the minimum they could offer some different CNC packages or something. They have had the casting in production for decades so it shouldn't be too tough to develop 2 or 3 CNC packages with different port sizes, chamber sizes, valve sizes, etc.
Last edited by AndyF; 05/09/24 03:00 PM.
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Re: Low deck Indy 540 on the dyno
[Re: EchoSixMike]
#3232396
05/12/24 09:07 PM
05/12/24 09:07 PM
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Joined: Jun 2006
Posts: 5,163
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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I don’t know enough about cost and specifics since I haven’t been down that road, but info on the B1 stuff certainly is limited. I think part of the problem is also if you’re going to do a B1 setup and utilize its potential at all you’re into block busting territory. Personally if I have to pony up for an aftermarket block I think I’m going to go Hemi, but I do see lots of people at the track running aftermarket blocks with Indy heads and others.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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