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Old 08-28-2014, 05:43 AM   #1
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331

Im looking into building 331 stoker engine. My question is if I run a flat top piston with 2 valve reliefs can I run a trick flow stage on cam?

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Old 08-28-2014, 08:34 AM   #2
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TFS1 cam is way too small for a stroker you should be looking at custom grinds honestly. Also depends on a lot of other variables than just "valve reliefs".

Hopefully you aren't looking at doing this with a stock block. Putting forged stroker internals into a stock block is pretty much like putting a Coyote motor in a Kia.

If you are looking to stay with a stock block, honestly I would just find a lower mileage 5.0 pushrod, preferably one with GT40 parts like form an Explorer or a Cobra if you can find one and supercharge it. You'll make more power, you'll retain stock street manners/gas mileage and it'll cost less.
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Old 08-28-2014, 08:59 AM   #3
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Wasn't about how much lift I could get away with. I was also thinking of doing an on3 turbo kit

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Old 08-28-2014, 10:17 AM   #4
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Here's what I'm leaning towards, I want a boss block either 302 or 351 (probably a 351) and run an ON3 turbo kit and make hella powerClick image for larger version

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Old 08-28-2014, 10:53 AM   #5
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With the On3, you'll make just as much power with a stock 302 with a OTS cam and a set of GT40s as you will with a 331 unless you go aftermarket block. The block is the weak point at 475-525rwhp which you can hit with the stock internals so there is 0 reason to stroke/bore/whatever a stock block unless you are staying NA and even then...

Been there and done this, if I sound discouraging or negative its because I've seen sooooo many ppl build up a stock block to a 331/347, throw a blower on it and then start a "how much power is the stock block good for" thread after they just got done with a $10k build. Which is how much it'll probably cost with the fuel/trans/suspension/motor work etc... to make it all happen if the car is stock.
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Old 08-28-2014, 01:12 PM   #6
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Ya I had plans on doing the on3 and just started kicking around the idea of a 331. I know I can throw the on3 on have it tuned and be at 450rwhp for 2500 bucks. And not have to touch my stock motor other than the gt 40 heads.

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Old 08-28-2014, 01:18 PM   #7
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That boss block could be sick with an on3 on it

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Old 08-28-2014, 01:56 PM   #8
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Yeah and boss blocks aren't to expensive and they will hold a **** load of horse power. If you did the 351 boss block and built it forged you can do pretty much anything and it will hold up to 800+ horse


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Old 08-28-2014, 07:37 PM   #9
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Yeah boss blocks aren't that expensive but machining them is. I hope you know that they do not come finished they still require plenty of work. Break open your piggy bank and start reading up as much as you can.

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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 08-29-2014, 12:04 PM   #10
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With an aftermarket block and boost, there is really no limit to what you can do except your wallet.

If you are ok with 400hp, and saving $10,000 then just Vortech the stock engine and call it a day.
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Old 08-29-2014, 12:30 PM   #11
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Just going to on3 it and all it a day. The on3 is only 1600 bucks. And a dyno tune is 525 450 for under 2500 hell ya

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Old 08-29-2014, 12:57 PM   #12
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Transmission upgrades?
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Old 08-29-2014, 01:00 PM   #13
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Ya the t 5 won't hold up long I'm sure. Going to start looking for a 3550

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Old 08-29-2014, 04:44 PM   #14
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You could also build up the T5 with stronger guts and still have a butter smooth shifting tranny.
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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 08-29-2014, 05:19 PM   #15
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True and it'd be cheaper I'm sure

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Old 08-29-2014, 05:21 PM   #16
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What would I swap it out with z spec stuff?

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Old 08-29-2014, 07:30 PM   #17
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Astro performance

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1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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Old 08-29-2014, 07:43 PM   #18
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What is it like different clusters??

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---------- Post added at 08:43 PM ---------- Previous post was at 08:42 PM ----------

Is that a Web site.

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Old 08-30-2014, 09:36 AM   #19
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I had a 3550, they shift like a box of rocks and are heavy. Either go built AOD or switch to an Astro A5. The Z spec is not much stronger than a regular T-5. The A5 will be a direct drop in, nothing else needed, not even a new shifter or crossmember although you should make sure you have an aftermarket shifter with the stops properly set if you are going to get a nice trans .
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Old 08-30-2014, 12:08 PM   #20
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What about a T-56 new for $2,600?


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Old 08-30-2014, 12:10 PM   #21
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That'd be awesome but would I have to get a new bell and all

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Old 08-30-2014, 12:33 PM   #22
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New bell, new shifter, new yoke, new crossmember and shortened driveshaft too. Probably be closer to $3500 when all is said and done. Not to mention the T-56 weighs double what the A5 does. Unless you absolutely HAVE to have that extra gear in between 4th and overdrive, stick with the A5 in a fox or 94/95 or stick with a T-45 or 3650 if you have a modular.

If I ever get another fox or 94/95 and its a 5 speed I will for damn sure be going with the A5, it's a complete no brainer.
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Old 08-30-2014, 03:19 PM   #23
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I'm looking into a 408 build and the A-5 says it's rated up too 425 pounds of torque. So what would be the best manual trans for that engine? Or do you guys think it will hold a 408


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Old 08-30-2014, 03:36 PM   #24
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The top A5 is rated for 585 and that is conservative. The top of the line A5 will be fine behind a 408 but I'd do a Coyote drop in before I did a 408. Then you can use a bunch of different transmissions including the A5 since Quicktime makes a bellhousing that allows the T-5 transmissions to be used in any modular app.
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Old 08-30-2014, 03:45 PM   #25
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Blueprint has a pretty good built 408 for under 5k and to do the build on one would be around 10k but iv heard that coyote builds are like 20k and the motors run into problems like the "tick".


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Old 08-30-2014, 09:57 PM   #26
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My boy has a turbo 363 with a Astro t5 and I love it way better than my upgraded tko

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2016 VW GTI 2.0 Turbo

1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph
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