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Max efort 347 top end

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Old Oct 13, 2010 | 05:45 AM
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Default Max efort 347 top end

Currently my car is cam only. I sold one of my snakes and have a pretty good amount of money to spend (figure around 6K) and have decided to finally finish my motor built.

Motor is fully built bottom end (billit crank/rods forged pistons ARP hardware)

I have an MS4 in it right now, and seeing as TSP holds the record for stock bottom end stock cubes N/A ( i htink thats it, **** i cant keep track anymore) i was figuring MS4 PRC 215s FAST 102 and call it a day, but then i figured **** alot of the guys you see on the fastest lists are running a TRex or some other well known "donkey dick" cam.

Should i pull the MS4 out and switch over to the Trex or something along those lines? Anyone have real world experience with max effort stock cubes?
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Old Oct 13, 2010 | 06:24 AM
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The MS4 should be fine especially since you have it already. I would just top it with AFR210cc v2 heads and a used fast 92/92. The Trex is slightly larger but some have even had PTV issues on stock heads. If you don't have 1-7/8 american racing/kooks/LG headers already I would get them also.

With Yella terras, gaskets, pushrods, injectors, tune ect that's about $5500.
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Old Oct 13, 2010 | 09:33 AM
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We are now able to setup the PRC 227's to clear the MS4 without flycutting, so for a max effort I'd go that route rather than the 215's!
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Old Oct 13, 2010 | 09:41 AM
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I would run Mast Motorsports Small bore heads and intake. Top it off with four barrel throttle body. Around 12:1 compression with a custom cam in the 24x/24x range.
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Old Oct 13, 2010 | 02:35 PM
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Originally Posted by Matt@Texas-Speed
We are now able to setup the PRC 227's to clear the MS4 without flycutting, so for a max effort I'd go that route rather than the 215's!
yeah i gotta give you guys a call before i change anything. Id rather run all your guys parts cuz they are so proven and i love the way my MS4 acts.


The rest of the mods currently are kooks 1 7/8 stepped headers, built M6 w/ MWC 9" with 4.56s a wavetrac and all the bells and whistles. Got a new walbrough, new fule lines, new rails, and 48# injectors, so i think my fuel system is good for an N/A setup.

would like to keep it "streetable" so i dont wanna go solid roller i do love to do my fair share of street racing.


I have thought about hitting up PatG or another motor guru and seeing about a custom spec'd cam also. It will pry depend on my phonecall to TSP. I dont mind being a TSP *****
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Old Oct 13, 2010 | 06:21 PM
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Honestly i would purchase the best heads and intake you can afford then have a custom cam ground to meet what you want out of the car.
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Old Oct 13, 2010 | 06:23 PM
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i whould go with a set of trickflows
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Old Oct 14, 2010 | 03:57 AM
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lets say i have 5250 to work with. Taking out some money for gas and a tune. a few things that need to be taken into consideratino.
1) car HAS to run on 91, i love my street racing and have to drive pretty far to do it and i dont want to be shelling out $150 on race night to go have my fun. I dont have a trailor so the car has to get me places.
2) I really dont want to flycut my pistons, if were going to get into that much lift id pull the motor apart and put a set of dished pistons in. I just dont like the idea of doing that.

umm i think thats about it. i know in the grand scheme of things 5250 isnt much in the world of race parts, but id like to get the most out of it and finally get this dumb car finished lol
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Old Oct 14, 2010 | 09:09 AM
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[QUOTE=SS4Luck;13988897]lets say i have 5250 to work with. Taking out some money for gas and a tune. a few things that need to be taken into consideratino.
1) car HAS to run on 91, i love my street racing and have to drive pretty far to do it and i dont want to be shelling out $150 on race night to go have my fun. I dont have a trailor so the car has to get me places.
2) I really dont want to flycut my pistons, if were going to get into that much lift id pull the motor apart and put a set of dished pistons in. I just dont like the idea of doing that.

Your forged pistons should have valve reliefs in them.
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Old Oct 15, 2010 | 06:33 AM
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ETP / PI / Mast 215-225 heads with 11.2-.4:1 compression. Not sure what intake you plan on running, but I'd have Geoff @ EPS spec you something nasty for a cam. Forged pistons should have valve reliefs like ss2000 stated. Since you're a fully forged engine you might as well turn some rpm 7500? Something 24x / 25x .63x + cam should rip.
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Old Oct 15, 2010 | 09:50 AM
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[QUOTE=ss2000;13989405]
Originally Posted by SS4Luck
lets say i have 5250 to work with. Taking out some money for gas and a tune. a few things that need to be taken into consideratino.
1) car HAS to run on 91, i love my street racing and have to drive pretty far to do it and i dont want to be shelling out $150 on race night to go have my fun. I dont have a trailor so the car has to get me places.
2) I really dont want to flycut my pistons, if were going to get into that much lift id pull the motor apart and put a set of dished pistons in. I just dont like the idea of doing that.

Your forged pistons should have valve reliefs in them.
You took the words right out of my mouth,was going to post that but kept on reading the tread...glad I did.

OP,what pistons are you presently running in that forged bottom end?
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Old Oct 15, 2010 | 12:03 PM
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i would build around the cam you have now. its a big nasty cam and im sure you would see a ton of improvement with some heads and using that cam.
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Old Oct 15, 2010 | 01:33 PM
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Originally Posted by BennyB
i would build around the cam you have now. its a big nasty cam and im sure you would see a ton of improvement with some heads and using that cam.
+1

I would use that money in the heads and supporting parts to get it to maximize the cam.

Brad
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Old Oct 15, 2010 | 06:29 PM
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Originally Posted by 180ls1
Honestly i would purchase the best heads and intake you can afford then have a custom cam ground to meet what you want out of the car.

X2 Best advice in this thread..
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Old Oct 15, 2010 | 06:35 PM
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Originally Posted by SS4Luck
lets say i have 5250 to work with. Taking out some money for gas and a tune. a few things that need to be taken into consideratino.
1) car HAS to run on 91, i love my street racing and have to drive pretty far to do it and i dont want to be shelling out $150 on race night to go have my fun. I dont have a trailor so the car has to get me places.
2) I really dont want to flycut my pistons, if were going to get into that much lift id pull the motor apart and put a set of dished pistons in. I just dont like the idea of doing that.

umm i think thats about it. i know in the grand scheme of things 5250 isnt much in the world of race parts, but id like to get the most out of it and finally get this dumb car finished lol
i would really look at the AFR 225 small bore, or the WCCH Edelbrock 245 ( dont flame on the size i have had great success with this head on a 347) these heads make killer power and still utilize the factory rocker for a nice clean reving motor... hit me up if you need more help
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Old Oct 15, 2010 | 06:38 PM
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Default Max efort 347 top end

I'd talk to Tommy at Anger management

Here's some of his work on a stock Bore, Stock bottom end vette

http://vettetrick.com/viewtopic.php?f=54&t=129
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Old Oct 15, 2010 | 06:38 PM
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tea can make a tfs 225 small bore, fast 102 ported, custom cam, done deal. I would definetly look into the tfs 225 small bore head, no extra charge, better flow #'s especially midlift. I would prefer the tfs head over a worked over set of afr's. 2400 for tfs, 3200-3500 for worked over afr. tfs still has the #'s
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Old Oct 16, 2010 | 05:07 PM
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well, max effort really doesn't go with what you are describing imo... I would consider mine closer to max effort, and it's not exactly cheap, the two dont go hand in hand... Max effort 347 is going to run at least 10 grand in parts......
and I wouldn't be running box stock anything, whether it be a trick flow or a prc.... custom cam for sure. Hell buy a couple different custom cams and do some dyno testing to see what works best, thats what we did.
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Old Oct 16, 2010 | 05:54 PM
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prc 215/227 ,fast 102 combo ,and a Trex should make 500 .make a ls1 2 piece timing cover just in case you want to try another cam.
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Old Oct 16, 2010 | 09:44 PM
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Originally Posted by BADD SS
well, max effort really doesn't go with what you are describing imo... I would consider mine closer to max effort, and it's not exactly cheap, the two dont go hand in hand... Max effort 347 is going to run at least 10 grand in parts......
and I wouldn't be running box stock anything, whether it be a trick flow or a prc.... custom cam for sure. Hell buy a couple different custom cams and do some dyno testing to see what works best, thats what we did.
my TFS 215s are box stock with a 58cc mill job...ported fast 92 and the rest is just bolted on

also rob z in the video above had some TFS heads too...I was told by tea he also had Ti valves...
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