supercharged 302 or N/A 347?

I would go the 302 SC route. Even with the stock cam you can make enough power with a SC to break the block. Your driveability will be much better.

My friend just ran into the same thing and didn't listen to me and got a 331 stroker. He has over $12,000 in it now and it still doesn't make the power of a stock block with a SC. And forget about the driveability.

Well if you're going to rebuild the stock block anyways, you might as well stroke it. It doesn't really cost much more. Get low compression pistons, run 5 or 6 pounds of boost for safety, and you get the best of both worlds! But if I had to choose one or the other now that I've gone through the whole stroker process, I would build a 306 and put a turbo on it. That's assuming I didn't have a stronger block, then I would still stick with my 347 and throw a turbo on it.

89sleeper said:

My friend just ran into the same thing and didn't listen to me and got a 331 stroker. He has over $12,000 in it now and it still doesn't make the power of a stock block with a SC. And forget about the driveability.

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Ehh, huh? What the HELL went WRONG?

Anyway, do a n/a 347 and be done with it. A done right 347 WILL make more power than a stock rebuilt 302/306 with a s/c. You can do 400rwhp easily with a little thought on the combo with in the stock eec's 6250 rev limiter. Whats your budget?

Stock heads and intake will make it easy to drive at low rpm and not consume more gas than before. Wind it up with an SC and you'll have the best of both worlds, rather than trying to go between them and not do as well in either.

5-6 psi should be ok on a healthy engine, but probably tough on the AOD.

Another thing is I'm not sure how even the 5-6 psi SVO supercharger is on engine bearings. This I think is a bigger problem, as far as I'm concerned, than the AOD going south from the SC.

I hear that the SVO supercharger is completely noiseless, but I'll have to look into that more.

With an SC you get very little hardware for the money. At least going the NA route you see what the money is going into. New heads, new intake, new TB, new gaskets, etc.

302 with supercharger is the best combo, if u rebuild it build it right then turn up the boost.

I VOTE 302 w/ supercharger is the best combo, if u rebuild it...then build it right, then turn up the boost!!!!!

Grn92LX said:

Ehh, huh? What the HELL went WRONG?

Anyway, do a n/a 347 and be done with it. A done right 347 WILL make more power than a stock rebuilt 302/306 with a s/c. You can do 400rwhp easily with a little thought on the combo with in the stock eec's 6250 rev limiter. Whats your budget?

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Well, First he ordered a 327 500HP COMP HAWK LONG BLOCK from D&D. It was supposed to make 500 flywheel HP so he figured he would settle for a safe 380 at the wheels. Well he got it together with all the misc. stuff he needed to go along with it including Accufab Throttle Body, 42 lb. injectors, 80 MM PRO-M, 1 3/4" BBK Jet Hot long tube headers w/custom X -pipe.....etc.....
It made 338 RWHP. He called D&D and they said they would send him a newer camshaft that would help. He paid me to put it in and it made 348 RWHP. So he brought it down to a local Mustang Shop to see what they could do. He ended up having the Holley intake Fully ported and had to have the AFR 185 heads matched up to the new intake. Also he had the heads milled and went with a Cam Motions custom grind cam. In order for the cam to work he needed special springs to keep up with it so he got K-Motion springs and had to have the heads cut for them to fit.
Put it all back together and made 385 RWHP. He then cut the collectors off the headers and put on race collectors to replace the small ball joint collectors that BBK's come with. Had them RE-Coated. and dynoed it again. 400 RWHP!!! Woo hoo!!! Also he just got done having an exhaust shop fab up a custom cold air intake pipe. it made 407 RWHP and 393 ft. lbs. He ran it 4 times and was running 118.00 MPH in a 3350 lb car. Went back to the track again and a valve spring failed and the valve went into the motor. BYE BYE Motor!!! He broke the block, the head, the piston, and the pushrods, and rockers. Now he had to buy another block, AFR head, Pistons, rockers, pushrods, etc.....and pay for all the machine work over again because he was trying to push the N/A combo to make power. Also the driveability with the cam was for $h!!. Needless to say over $12,000 later and he still doesn't come close to a stock block motor with a stock cam and good heads and intake with a blower.
Three of our friends have stock 302/306's with superchargers. All make over 500 RWHP with the top one making 556 with a very mild cam. 2 of them run Novi 2000's and one runs a Vortec S Trim. Then one's with the Novi's idle stone stock and have stock drivability. The one with the S-Trim idles a little louder and the blower whines a little more. It ran 10.80 on ET Streets at 129.00 MPH.

O/T mmmmmm.....guess you know your a real gear head when you take a loan for a poweradder, Come to think of it, it's not a bad idea, I might do the same.

88_GT_5_oh said:

ok boy heres a dumb question but, how long will that stock 5 speed i got in there last with either the 347 or s/c 302 cause i won't be able to get a newer tranny for a couple months after the motor goes in, or am i stuck and shouldn't even consider using this tranny?

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It all depends on your driving habits and your clutch. I would rather have the clutch as the weak link. It is cheaper to replace a clutch than it it a tranny.

My setup was somewhere around $6000 I believe, probably more. I added it all up at one point in time. It gets expensive. That's not including $3000 for a rebuild because the first machinist that worked on the block ****ed up some oil passage plugs. If I had to do it again I'd buy an assembled short block from D&D or something, or even a longblock. It will save you a bunch of time and money.

88_GT_5_oh said:

Grn92LX
my budget is kinda floating cause i am gonna take a loan for this. but i'd like to keep it as low priced as i can without getting ****ty parts.

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Please don't take a loan ...... the problem with too many Americans is the need vs. want issue. Don't go into debt over wanting things. Save up the money.

Does anyone really need more power Dumb question.

u should do a 306 with a turbo. or even a 302 with a turbo would be awesome. i saw some of those combos on turbomustangs.com and they are nice. i plan on going the turbo route!