sinister88lx
Friends dont let friends drive naturally aspirated
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« on: January 04, 2007, 06:11:07 PM » |
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I have a 331 in my 88LX that was machined by a local shop and assembled and installed by me.The mods are as follows: stock block bored .30 over and o-ringed,hot tanked decked and line bored with all new bearings and screw in freeze plugs. Forged pistons(with moly rings) and rods with a nodular iron stroker crank all balanced to within half a gram. ARP studs on the bottom end and ARP rod bolts. Heads are Trick Flow Twisted Wedge with polished runners, bronze valve guides and 3 angle valve job.Compression comes in around 9.8:1.Cam is a Ford e-303 with 1.72 roller rockers. Exhaust is Mac long tube headers, h-pipe and Flowmaster 2 chamber mufflers with turn downs. Fuel system consists of a 255lph in tank, a Procharger in line and 55lb injectors with a Pro-m mass air.Ignition is a MSD 6AL with Taylor 409 wires.The car also has a S-trim making 10 psi into a 65mm TB and a GT-40 intake. The car has dual electric fans, no a/c etc.On a 96 deg day with 90% humidity the car made 466 rwhp and 460 rwtq through a Tremec 3550 trans and Strange 31 spline Pro race axles with a Detroit True Trac and c-clip eliminators.The a/f ratio was 11.5:1 all through the run and base timing was at 10 degs. I feel the GT-40 intake is holding me back since everything Ive read about it says its good to about 400hp.I dont want a short runner or a box intake so whats the next best? The Trick Flow? The Holley Systemmax? What do you guys(and girls) think?
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88LX-331 c.i.,Vortech s-trim,TFS heads,Pro-flow,Mac long tubes,MSD,Flowmasters,e-303,GT-40 intake,373 rear,Tremec 3550,aluminum driveshaft and more I cant remember
87GN-ta-49 turbo,Fred Brown trans,2800 stall,3 inch downpipe with dump,adj. wastegate,009s,big mouth cold air
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sinister88lx
Friends dont let friends drive naturally aspirated
Newbie
Posts: 42
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« Reply #1 on: January 11, 2007, 06:47:44 PM » |
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No one has any ideas or input here?
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88LX-331 c.i.,Vortech s-trim,TFS heads,Pro-flow,Mac long tubes,MSD,Flowmasters,e-303,GT-40 intake,373 rear,Tremec 3550,aluminum driveshaft and more I cant remember
87GN-ta-49 turbo,Fred Brown trans,2800 stall,3 inch downpipe with dump,adj. wastegate,009s,big mouth cold air
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Chowder Head
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« Reply #2 on: January 11, 2007, 08:14:57 PM » |
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Well I'm no means an expert but what I recall being good for 331/347 motors were actually quite a lot.
Edelbrock RPMII, Trick Flow Track Heat, and like you mentioned, the Systemax but I'd look at the SystemaxII since yours is a 331 all look good.
All of those should do they job and I recommend you doing some more research because like I said, I'm not means an expert. Just giving you some options.
Good luck dude.
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-Michael
"Procrastination is the art of keeping up with yesterday." - George Carlin
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David Claflin
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Posts: 8674
Vehicle: 1990 Ford Mustang LX
Professional Husband
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« Reply #3 on: January 12, 2007, 02:58:04 AM » |
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Systemmax is probably best. Just out of curiosity, why an E-303 cam and two chamber flows?
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If an American is to amount to anything he must rely upon himself, and not upon the State; he must take pride in his work, instead of sitting idle to envy the luck of others. He must face life with resolute courage, win victory if he can, and accept defeat if he must, without seeking to place on his fellow man a responsibility which isn't theirs-TR
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Bwhitty799
Texas is the Biggest S***hole
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Posts: 13669
Vehicle: 1990 Ford Mustang GT
Lebanon Pennsylvania
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« Reply #4 on: January 12, 2007, 06:09:16 AM » |
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System max would work good for you. Got that on my 331 with s trim.
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Brandon
1990 GT
Blown 331 In The Works
1993 LX
2000 CBR 600
Few Odds And Ends
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sinister88lx
Friends dont let friends drive naturally aspirated
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Posts: 42
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« Reply #5 on: January 12, 2007, 06:02:07 PM » |
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Ive had the e cam for at least 10 years and 3 combinations.I know there are other cams that would probably be better, but I like the way the car runs with it. I have no deadspots, excellant throttle response(very punchy) and good drivability.As far as the Flowmasters go, I just really like the sound. Decent compression, long tubes and turn downs make for a nasty sounding street/strip car. Besides, it really scares the crap out of the local ricers around here.  |
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88LX-331 c.i.,Vortech s-trim,TFS heads,Pro-flow,Mac long tubes,MSD,Flowmasters,e-303,GT-40 intake,373 rear,Tremec 3550,aluminum driveshaft and more I cant remember
87GN-ta-49 turbo,Fred Brown trans,2800 stall,3 inch downpipe with dump,adj. wastegate,009s,big mouth cold air
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J. D.
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Vehicle: 1989 Ford Mustang LX
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« Reply #6 on: January 12, 2007, 06:12:04 PM » |
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Here are some shots of my old RPM II compared to my Systemax where the plenum meets the lower. RPM II  Systemax  RPM II  Systemax  |
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sinister88lx
Friends dont let friends drive naturally aspirated
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Posts: 42
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« Reply #7 on: January 12, 2007, 08:01:41 PM » |
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So its starting to look like the System Max is the way to go. Are the pics of the System Max I or II ? Have you done any port work to it?
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88LX-331 c.i.,Vortech s-trim,TFS heads,Pro-flow,Mac long tubes,MSD,Flowmasters,e-303,GT-40 intake,373 rear,Tremec 3550,aluminum driveshaft and more I cant remember
87GN-ta-49 turbo,Fred Brown trans,2800 stall,3 inch downpipe with dump,adj. wastegate,009s,big mouth cold air
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J. D.
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Vehicle: 1989 Ford Mustang LX
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« Reply #8 on: January 12, 2007, 08:10:41 PM » |
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Systemax II.
No port work. It already matches up pretty well with the intake ports. Everything will probably come back apart this next winter when I plan to shave the heads. Will do all the port work then.
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J. D.
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« Reply #9 on: January 12, 2007, 08:22:21 PM » |
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If you really want a laugh, here is a shot of the stocker on the left, the GT-40 in the middle, and the RPM II on the right. Not pictured is the Holley, which I showed you the dimensions of in a previous post. It beats all three of them. A far cry from the stocker, I would say.  |
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J. D.
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« Reply #10 on: January 12, 2007, 09:12:42 PM » |
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On a side note. I'd skip going with the Flowmasters, and maybe choose the Dynomax Ultraflows instead. I had two chamber Flowmasters on Fred, when it was stock. It was tolerable then. But as soon as I peaked 300 rwhp, they tore my ears up. It was terrible. The drone about made me go nuts. I still wanted to show off, and didn't want to have to put tailpipes on, so I went with the Dynomax Ultraflows. The are about as loud as the Flowmasters, but they take the edge off, as they are a flow-thru design. They thump, but more in a hissing way. I get allocades all the time about the way my exhaust sounds. Just Mac long-tubes, Mac pro-chanber, Ultraflows, and 3" turn-downs right after the mufflers. Right click, save as. http://www.clutterdog.com/videos/exhaust.wmvhttp://www.clutterdog.com/videos/fredroad.wmvhttp://www.clutterdog.com/videos/holleydynotune.wmv |
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sinister88lx
Friends dont let friends drive naturally aspirated
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Posts: 42
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« Reply #11 on: January 12, 2007, 09:37:03 PM » |
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I already have teh 2 chamber Flowmasters. Ive had them for a while now. Originally I was using them with the tailpipes that came with them. I went with turn downs because the tailpipes wont clear my slicks.The sound doesnt bother me. Im sure it bothers those whose car alarms I set off when driving down the street  |
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88LX-331 c.i.,Vortech s-trim,TFS heads,Pro-flow,Mac long tubes,MSD,Flowmasters,e-303,GT-40 intake,373 rear,Tremec 3550,aluminum driveshaft and more I cant remember
87GN-ta-49 turbo,Fred Brown trans,2800 stall,3 inch downpipe with dump,adj. wastegate,009s,big mouth cold air
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David Claflin
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Posts: 8674
Vehicle: 1990 Ford Mustang LX
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« Reply #12 on: January 14, 2007, 05:45:50 AM » |
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Systemax II.
No port work. It already matches up pretty well with the intake ports. Everything will probably come back apart this next winter when I plan to shave the heads. Will do all the port work then.
Trying to up the compression John? |
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If an American is to amount to anything he must rely upon himself, and not upon the State; he must take pride in his work, instead of sitting idle to envy the luck of others. He must face life with resolute courage, win victory if he can, and accept defeat if he must, without seeking to place on his fellow man a responsibility which isn't theirs-TR
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J. D.
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« Reply #13 on: January 14, 2007, 05:51:14 AM » |
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Yep. I figure to keep it normally aspirated.
I love the way it feels as it is at 8.5:1. I imagine I'll be tickled pink after we raise the compression a few notches.
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sinister88lx
Friends dont let friends drive naturally aspirated
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Posts: 42
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« Reply #14 on: January 14, 2007, 12:08:09 PM » |
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My compression is at 9.8:1 and it feels great.The car is so responsive even before the blower steps in (at 3000 rpm).Go up a little and youll really like it.Makes for a nice drive on the street.
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88LX-331 c.i.,Vortech s-trim,TFS heads,Pro-flow,Mac long tubes,MSD,Flowmasters,e-303,GT-40 intake,373 rear,Tremec 3550,aluminum driveshaft and more I cant remember
87GN-ta-49 turbo,Fred Brown trans,2800 stall,3 inch downpipe with dump,adj. wastegate,009s,big mouth cold air
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David Claflin
Badass Member
Posts: 8674
Vehicle: 1990 Ford Mustang LX
Professional Husband
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« Reply #15 on: January 15, 2007, 06:02:22 AM » |
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Yep. I figure to keep it normally aspirated.
I love the way it feels as it is at 8.5:1. I imagine I'll be tickled pink after we raise the compression a few notches.
Are you just going to mill the heads or have the block decked too?? |
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If an American is to amount to anything he must rely upon himself, and not upon the State; he must take pride in his work, instead of sitting idle to envy the luck of others. He must face life with resolute courage, win victory if he can, and accept defeat if he must, without seeking to place on his fellow man a responsibility which isn't theirs-TR
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J. D.
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Vehicle: 1989 Ford Mustang LX
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« Reply #16 on: January 15, 2007, 09:11:03 PM » |
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We were planning on just shaving the heads.
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NUTTSGT
The official
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« Reply #17 on: January 17, 2007, 05:01:04 AM » |
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Those ports look considerably larger there John.  |
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Don't race it if you're afraid to break it.
My wife is a Dispatcher, she tells me where to go .....and gets paid for it.
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David Claflin
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Posts: 8674
Vehicle: 1990 Ford Mustang LX
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« Reply #18 on: January 17, 2007, 05:40:10 PM » |
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We were planning on just shaving the heads. How much can you take off those?? Dependent upon where the pistons are sitting in the bore you might be able to get another point or so by decking the block. I think there are some on line calculators to help figure that, of course that would mean disassembling the engine too. |
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If an American is to amount to anything he must rely upon himself, and not upon the State; he must take pride in his work, instead of sitting idle to envy the luck of others. He must face life with resolute courage, win victory if he can, and accept defeat if he must, without seeking to place on his fellow man a responsibility which isn't theirs-TR
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J. D.
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Vehicle: 1989 Ford Mustang LX
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« Reply #19 on: January 17, 2007, 06:12:28 PM » |
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We were planning on just shaving the heads. How much can you take off those?? Dependent upon where the pistons are sitting in the bore you might be able to get another point or so by decking the block. I think there are some on line calculators to help figure that, of course that would mean disassembling the engine too. There is a head shop here in town who will give me the exact figure based on my combo/internals. I have the build sheet and will be able to take that down with me when I talk to them. I will probably not go over .045. That might be good enough for 1-1.5 compression points. But that is just a redneck estimate. Any more than that and I will probably have to machine my intake so it seats properly in the valley. I wiould rather not have to do that. I'm putting 310 to the rear wheels with 8.5:1 right now. We're guessing maybe 360-380, or maybe a little more, with 9.5 or 10:1 and a little gasket matching on top of that. |
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