CHEAP, E-BAY CAD BLOWER + LS ADAPTERS-PUMP GAS vs E85 (pt2)

[Music] here's a great comparison on a supercharged ls pump gas or 885 in this video we're going to compare 91 octane pump gas to e85 on a supercharged 4.8 liter ls now back in part one we installed the cadillac sts m122 supercharger on our 4.8 liter using adapter plates from the guys at mac daddy parts now the combination ran very well but we had to run it on pump gas so as you know the tune was a little soft it limits power production for this video we're going to step things up with e85 we'll find out how much the e85 is worth over the 91 and then find out how much the extra timing is worth on the 85. let's get going [Music] or we can cover the test run on the effective e85 on our supercharged 4.8 liter and then the attending timing upgrades also that also add power we need to do a recap there might be a lot of people watching this video that did not watch part one where we added the supercharger to the 4.8 liter and ran on pump gas if you haven't seen that video check it out i'll put a link up right here to part one in that video but basically we had a 4.8 liter test motor originally started out as a junkyard motor so it had a stock block stock crank it had gen 4 rods and long ago after hurting the factory pistons we installed a set of je forged pistons now they had a slight dome on them so it brought the compression up about a half a point higher than stock this test motor also had stock 706 heads as cast imported they did have a valve spring upgrade we had a truck manifold stock truck throttle body inch and 7 8 headers all run with an hp management system and snake eater 1 500 cc injectors to make sure that we had enough fuel both on pump gas and later on on e85 now the one thing i didn't mention in part one of that video was the cam timing and obviously cam timing is critical for all of this stuff as we know uh every cam is a boost cam so this was a jfr cam left over from my original sloppy stage 2 versus the world test i ran them all n a to begin with and i have yet to run them actually under boost but given the fact that they made almost all the same power and a we kind of know what's going to happen under boost too but i digress the jfr cam was 595 lift it was a 224 228 degree duration split and 112 degree low separation angle so that's the cam that's in our test motor so run in this manner naturally aspirated our little 4.8 liter produced 401 horsepower and 368 foot-pounds of torque and here's what happened after we installed the intercooled cadillac blower running with pump gas and a pump gas tune we ran it on 91 octane the blower was putting out about 11 pounds of boost and you can see has a nice torque curve hovering around 500 foot-pounds all the way down and had we started the load lower than that even down below 3000 rpm of the 2500 range this thing would have offered a ton of boost and obviously a ton of torque so this combination produced over 500 horsepower 503 torque was way up at 400 and 514 foot-pounds of torque so it did very well given the fact that we were limiting it on pump gas obviously a 91 octane tune was fairly mild this is about the equal timing that the guys from mack daddy parts who do the adapters to allow us to install the supercharger on our ls this is about the timing level that they're running out on the street so we know that this works on pump gas but now let's find out what happens when we increase the timing but first let's find out what happens when we add e85 now they're all caught up from part one where we took our 4.8 liter rna motor that made 400 we increased the power output to over 500 using our cadillac m122 sts blower and the macdaddy parts adapters running on pump gas on 91 octane it was over 500 horsepower and 514 foot-pounds of torque but now i want to get into the e85 test and the extra timing but before we can do that i made one other change because i'm going to be doing a video part 3 will be all about throttle body upgrades on this combination we wanted to find out how responsive the supercharger is to inlet restrictions basically throttle body size and i ran this at multiple power levels so that video will be all about that so while i was testing this the first thing that i did after we had run this test on pump gas is i put a larger throttle body on what we did was replace the factory truck throttle body which obviously is size for factory truck power and not for 500 horsepower so we installed a larger fast 102 millimeter throttle body on our custom inlet elbow which consisted basically of a three and a half inch inlet tube and we had an adapter to go up to the 102 millimeter throttle body now the 102 millimeter throttle body was bigger than the opening in the back of the blower but we wanted to see if we could improve the flow rate into the blower and as it turned out it was very responsive to this change if we take a look and see at even at this power level and as i said we'll do a video on different power levels so the throttle body stuff will be kind of cool but here's what happened when we installed the throttle body we increased the power output up to 517 horsepower peak torque was up to 523 foot-pounds and as we typically expect from an inlet change like an airflow change we see more of a gain out at the top of the rpm range than we do at the bottom because it has enough airflow to support the power level at the bottom but just not at the top and that's exactly what this throttle body did and we'll go into detail in the third video which will be some really cool stuff but this is the order that i ran the test in so before we could get to the e85 we did this throttle body and i didn't want you to think that all of the power came from just the e85 but let's take a look at that now and find out here's what happened when we changed over from pump gas to e85 you see we got a big change and we got a big change everywhere i mean down here at uh 35 or 3600 the torque jumped up from 496 to 532 so we picked up a ton of torque and out here at the top we we picked up from 510 to 542 so you're talking about 30 horsepower or so and 30 foot pounds of torque so it's a nice gain it's important to note that when we put this e85 in we match the air fuel on the gas scale so they're both running at about 11 and a half to one and we made no change to timing we ran the timing level that we would run on the pump gas level which as i said was about 17 degrees now we all know that on e85 that's not nearly enough timing or more accurately it will take a lot more timing than that and that's we're going to get into next but just adding the e85 all by itself with no changes to timing and maintaining the same airfield ratio was it worth as as much as 30 horsepower on this supercharged combination not to not to mention the fact that obviously it's going to lower the temperature and it's going to make things a lot safer because it has higher octane so your motor driving around would be much happier on this e85 obviously than pump gas and it's worth quite a bit of power so now let's find out what happens when we start adding timing and make this make this thing a little bit spicy so after adding our e85 and seeing the gains there we were excited about now changing the timing because we knew that the pump gas tune was only 17 degrees at the top of the rpm range was not nearly enough timing and we were certain that this thing would respond to more timing it even responded to timing changes when we had the 91 octane in it so we knew that there was a lot of power left so what we did was start increasing the timing we were making 542 horsepower and 547 foot-pounds of torque and now it's time to start adding a little bit of timing a little spice to this baby so what we did was add about two degrees and brought this thing up to 200 or 19 degrees total we were up to 556 horsepower 561 foot pounds of torque and obviously it was responding to the timing as we would expect it to and after going through we and we went up in uh one degree increments at a time when we were doing all this testing but there's really no need for us to go through each one of those things so what we did was i would basically add in this test i would add two degrees everywhere so we were starting down low with about 10 or 11 degrees and then we would go up to when we were doing the pump gas tune it would go from about 10 or 11 to 17 at the top so we would basically add two everywhere to that and it was responding to that so it even like more timing down low and we would add two degrees it would pick up power we would add time and pick up two degrees but when we're doing the timing on the holley hp management system obviously at each boost level at each step up each cell we have uh more timing at the lower boost level than we have at the higher boost level so what it's doing is interpolating from the high and low number and from the different rpm ranges so what i did was at the end to get this thing to make the most power is we basically just put 23 degrees in all the cells at the end and and you'll see what happens and it should be fairly obvious as to where we put the 23 degrees in so we can see we had about we had 23 degrees in from about 4 800 on out and then it had uh and at the 45 range it had 21 or so and then we had the same timing curve from the 3000 and 3500 range as you can see now if you're looking at these curves you can see well it's really kind of coming on the cam there between 41 or 4200 and 4500 what's happening is that's the ramp up in timing so we could fill this torque curve in if we wanted to by adding even more timing down low so if i were to take and put 23 degrees in this thing all the way across while it might not gain a ton down here at 3500 it would definitely pick up in the 4000 to 4500 range so we could fill the torque curve in even more if you wanted more torque from your combination but run with 23 degrees and e85 the power output was up to 591 horsepower 590.7 and torque was up to 592 foot-pounds so we were getting up near the 600 horsepower mark with our combination running e85 and remember we had never changed the pulley on this thing it was still the pulley that came with the supercharger and the factory truck now we obviously had to as you saw in the first video if you haven't make sure to check that out but we had to pin the dampener on the crank because the damper that we use on this 4.8 the poor thing had been on and off i i bet it's been on and off like a hundred times on that motor i'm i'm sure that it's that many because we've run endless cam tests on this we've done all kinds of stuff i've done adjustable cam sprockets we've run multiple blower cams multiple anti-cams multiple turbo cams we've taken this thing apart you know like i said i'm sure a hundred times so this thing at this point was almost basically a slip fit so thanks to the guys at torque storm i had one of their kits to pin the crank for their torque storm blower that we had used and we just used a pin on this and got it so that we we had no slippage and also the the tensioner that the guys from uh mack daddy parts sent was strong enough that we didn't have any belt slippage the boost curve seem to be nice and flat so the thing i want to look at now is in part three i'm going to show you what happens when we change throttle bodies at different boost levels and we're going to talk a little bit about how i think we can improve the power output even at this boost level but let me know what you guys think before we get to our conclusion let me know what you guys think should i run this on continue running it on the 4-8 should i step up to a 5-3 or maybe even a 6-0 to find out if this blower can support power on the bigger motor let's get to our conclusion well guys it should be obvious from the results e85 a big yes on a supercharged combination and then the extra timing is worth even more power i'm going to show you one more graph and this shows you where we started at about 400 horsepower with our na 4.8 liter and then we stepped up with the blower and pump gas up to about 500 horsepower and then we stepped even farther to 591 horsepower and 592 foot-pounds of torque after we changed the throttle body and the e85 and the extra timing but the only question now is what comes next we know that part three is going to be a big throttle body test but what should we plan with our supercharged 4.8 liter now here are the options first of all we can change the blower pulley and or the crank pulley and increase the boost out of the blower to increase the power the next option is i can port the inlet side of the supercharger put on a bigger inlet tube and try to get more air in and then more power out of the blower the final option obviously is a camshaft we know it has the wrong cam because they all have the wrong cam i can change the camshaft in improve the power output of the n a motor and then hopefully improve the power output of the supercharged combination but here's what i want you to think about there's one final option should we step up from the 4.8 liter to either a 5 3 or a 6.0 and find out what the supercharger really has to offer armature holder guys make sure to like share subscribe ring the bell do all that stuff more supercharged power coming up

Channel: Richard Holdener

Views: 92,635

Keywords: ebay, ls, cadillac, sts, blower, boost, supercharger, e85

Id: P9dVX0eEnXI

Length: 15min 2sec (902 seconds)

Published: Tue Mar 02 2021