4.5 Twins vs. CX Racing (Ebay) intercooler
03-17-2011, 04:42 PM
#1
4.5 Twins vs. CX Racing (Ebay) intercooler I'm about to get my AES 390 block and was wondering how much rwhp I can get out of it with my twin 4.5 intercoolers and Alky control and D-1. I would like to get 800 rwhp if possible with the twins but will not hesitate to switch them out for a cx racing front mount if it produces a lot more horsepower. I only want to do this once because the only tuner I trust with my new block lives about 10 hrs (Dallas) from me. Let me know what everyone thinks.
Thanks
Thanks
03-17-2011, 05:45 PM
#2
I've called ATI and asked that same question. Those 4.5" twins are rated at something like 850 hp and the 3.5" like 700 hp. Meth adds more margin to them both.
BTW, a maxed out D1 can rarely make 800rw though unless it's being spun to the moon. Expect more like 750 rw or so unless you go to a bigger blower.
BTW, a maxed out D1 can rarely make 800rw though unless it's being spun to the moon. Expect more like 750 rw or so unless you go to a bigger blower.
03-17-2011, 05:51 PM
#3
I've called ATI and asked that same question. Those 4.5" twins are rated at something like 850 hp and the 3.5" like 700 hp. Meth adds more margin to them both.
BTW, a maxed out D1 can rarely make 800rw though unless it's being spun to the moon. Expect more like 750 rw or so unless you go to a bigger blower.
BTW, a maxed out D1 can rarely make 800rw though unless it's being spun to the moon. Expect more like 750 rw or so unless you go to a bigger blower.
Anyway who does your tuning in Dallas/ I'm going with Taylor from Dallas Per$%##. I've heard he's really good at tuning!!
03-17-2011, 06:35 PM
#4
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I highly doubt you will make 750 rwhp through the twin 3.5" unless you have an F-1 blower and lots of methanol. I think around 600-650rwhp is more realistic.
03-17-2011, 11:59 PM
#7
I would just switch and not have the worry hanging over your head. Oh and all the previous posts are incorrect. Trust, made 808rwhp through a built 4L60 with a 396 and the D1 with the twin 4.5's. I would still switch it over to a front mount....cooler IAT's and a simpler setup overall. I think if you max out the blower on RPM you'll be right near your goals.
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03-18-2011, 12:06 AM
#8
I would just switch and not have the worry hanging over your head. Oh and all the previous posts are incorrect. Trust, made 808rwhp through a built 4L60 with a 396 and the D1 with the twin 4.5's. I would still switch it over to a front mount....cooler IAT's and a simpler setup overall. I think if you max out the blower on RPM you'll be right near your goals.
03-18-2011, 07:11 AM
#9
Hi Andy, we were making 740 rwhp in Tom Snitzer's 2004 Corvette at the old EPP shop with a 346 at 16 psi of boost. This was with the ProCharger 4.5" twin intercoolers, methanol injection and the car was driven very hard on a 2.1 mile road course. In two years of use it probably saw more wide open throttle time than most cars do in a lifetime. We kept the twin intercoolers on this Vette to keep as much air directed to the radiator that we could.
Back at the old shop we also managed to see 756 rwhp in a T/A that had a 408 with a D-1SC. We were at the upper limits of what the D-1SC can handle. More power could be made much easier had this car had an F-1A on it, but the customer already had the D-1SC on it when he brought the car to us. We added our EPP front mount intercooler assembly to it.
If you're not up for fabbing anything, then the Ebay intercooler won't be what you want to use. We offered a front mount package at EPP that used this Ebay intercooler, it used the same intercooler that I had on my '99.
The new ProCharger front mount intercooler would be a good way to go. Here is a link to it. http://shop.brutespeed.com/ATI-1GJ11...-1GJ115-IC.htm
Can you get by with the 4.5" twin intercoolers with methanol at 16 psi? Yes, but after one wide open throttle blast the intercoolers will be hot to the touch. The larger front mount intercooler will be much more effective, especially since you live down in El Paso. The front mount really helps at the drag strip, where the intercooler(s) doesn't see much airflow after a run.
I also highly recommend the larger Race valve bypass valve when pushing up the boost, as the system will see much more airflow that needs to be relieved. The ProCharger front mount intercooler is designed to be used with the race valve. Bob
Back at the old shop we also managed to see 756 rwhp in a T/A that had a 408 with a D-1SC. We were at the upper limits of what the D-1SC can handle. More power could be made much easier had this car had an F-1A on it, but the customer already had the D-1SC on it when he brought the car to us. We added our EPP front mount intercooler assembly to it.
If you're not up for fabbing anything, then the Ebay intercooler won't be what you want to use. We offered a front mount package at EPP that used this Ebay intercooler, it used the same intercooler that I had on my '99.
The new ProCharger front mount intercooler would be a good way to go. Here is a link to it. http://shop.brutespeed.com/ATI-1GJ11...-1GJ115-IC.htm
Can you get by with the 4.5" twin intercoolers with methanol at 16 psi? Yes, but after one wide open throttle blast the intercoolers will be hot to the touch. The larger front mount intercooler will be much more effective, especially since you live down in El Paso. The front mount really helps at the drag strip, where the intercooler(s) doesn't see much airflow after a run.
I also highly recommend the larger Race valve bypass valve when pushing up the boost, as the system will see much more airflow that needs to be relieved. The ProCharger front mount intercooler is designed to be used with the race valve. Bob
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https://brutespeed.com/ Link to website
03-18-2011, 08:54 AM
#10
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I'm running the twin 4.5" intercoolers on my car without problems. I've got a LSX 408 w/ twin TC67s and made 800 on 15#. The IATs stayed reasonable and I'm even running them in series not parallel like you're supposed to.
03-18-2011, 10:51 AM
#11
And spaying meth is like the great equalizer as it dropped my IATs from 135*F to 85*F which was well below ambient temperature. More power can be made with just alky/water and no intercooler. Or just run methanol as the fuel with no intercooler or separate meth system.
Me, I like the twins because they let me to keep my front bumper. For a race car, though, it's a no brainer to go with a front mount.
03-18-2011, 11:52 AM
#12
Unless someone does a back-to-back test with the same dyno or track, same weather, and same car I think this question will stay open to speculation. My guess is you might get an extra 3% hp out of a front mount.
And spaying meth is like the great equalizer as it dropped my IATs from 135*F to 85*F which was well below ambient temperature. More power can be made with just alky/water and no intercooler. Or just run methanol as the fuel with no intercooler or separate meth system.
Me, I like the twins because they let me to keep my front bumper. For a race car, though, it's a no brainer to go with a front mount.
And spaying meth is like the great equalizer as it dropped my IATs from 135*F to 85*F which was well below ambient temperature. More power can be made with just alky/water and no intercooler. Or just run methanol as the fuel with no intercooler or separate meth system.
Me, I like the twins because they let me to keep my front bumper. For a race car, though, it's a no brainer to go with a front mount.
03-18-2011, 12:39 PM
#13
Hi Andy, we were making 740 rwhp in Tom Snitzer's 2004 Corvette at the old EPP shop with a 346 at 16 psi of boost. This was with the ProCharger 4.5" twin intercoolers, methanol injection and the car was driven very hard on a 2.1 mile road course. In two years of use it probably saw more wide open throttle time than most cars do in a lifetime. We kept the twin intercoolers on this Vette to keep as much air directed to the radiator that we could.
Back at the old shop we also managed to see 756 rwhp in a T/A that had a 408 with a D-1SC. We were at the upper limits of what the D-1SC can handle. More power could be made much easier had this car had an F-1A on it, but the customer already had the D-1SC on it when he brought the car to us. We added our EPP front mount intercooler assembly to it.
If you're not up for fabbing anything, then the Ebay intercooler won't be what you want to use. We offered a front mount package at EPP that used this Ebay intercooler, it used the same intercooler that I had on my '99.
The new ProCharger front mount intercooler would be a good way to go. Here is a link to it. http://shop.brutespeed.com/ATI-1GJ11...-1GJ115-IC.htm
Can you get by with the 4.5" twin intercoolers with methanol at 16 psi? Yes, but after one wide open throttle blast the intercoolers will be hot to the touch. The larger front mount intercooler will be much more effective, especially since you live down in El Paso. The front mount really helps at the drag strip, where the intercooler(s) doesn't see much airflow after a run.
I also highly recommend the larger Race valve bypass valve when pushing up the boost, as the system will see much more airflow that needs to be relieved. The ProCharger front mount intercooler is designed to be used with the race valve. Bob
Back at the old shop we also managed to see 756 rwhp in a T/A that had a 408 with a D-1SC. We were at the upper limits of what the D-1SC can handle. More power could be made much easier had this car had an F-1A on it, but the customer already had the D-1SC on it when he brought the car to us. We added our EPP front mount intercooler assembly to it.
If you're not up for fabbing anything, then the Ebay intercooler won't be what you want to use. We offered a front mount package at EPP that used this Ebay intercooler, it used the same intercooler that I had on my '99.
The new ProCharger front mount intercooler would be a good way to go. Here is a link to it. http://shop.brutespeed.com/ATI-1GJ11...-1GJ115-IC.htm
Can you get by with the 4.5" twin intercoolers with methanol at 16 psi? Yes, but after one wide open throttle blast the intercoolers will be hot to the touch. The larger front mount intercooler will be much more effective, especially since you live down in El Paso. The front mount really helps at the drag strip, where the intercooler(s) doesn't see much airflow after a run.
I also highly recommend the larger Race valve bypass valve when pushing up the boost, as the system will see much more airflow that needs to be relieved. The ProCharger front mount intercooler is designed to be used with the race valve. Bob
Last edited by Tirefire; 03-18-2011 at 12:45 PM.
03-19-2011, 03:49 AM
#15
TECH Resident
I run 4.5s on mine. No problems although i will be adding meth this spring before I turn up the boost. Made 600+ on my 347 d1sc combo, with your plans youshould make north of 700 without a problem. Im shooting for 700 this spring..and mid 10 slips a the track on the old 10 bolt..
03-20-2011, 10:46 AM
#16
I run 4.5s on mine. No problems although i will be adding meth this spring before I turn up the boost. Made 600+ on my 347 d1sc combo, with your plans youshould make north of 700 without a problem. Im shooting for 700 this spring..and mid 10 slips a the track on the old 10 bolt..
03-20-2011, 11:11 PM
#18
Wow!! Those are some stout numbers for a 347, I hope to push numbers like that when it's all said and done. I should be getting my motor this coming week and will be sending out my tranny for some upgrades. I'll keep everyone posted..
