Thread: 427w

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Hello everyone, I thought i'd post this topic to get some feedback, ideas, and
opinions.

I really like the idea of stroking a 351W to a 427 and on top of that adding a supercharger with a carb'd setup

I want it "streetable", however I would like to have awesome midrange power for slight high rev top-end performance for interstate usage. I'd like to

mate it to a T56 6spd tranny with perhaps a 3.55 gear ratio.

As far as ideas, I'm leaning toward an Edelbrock RPM Air-Gap and a Lunati Voodoo 268/276 cam (1800-6200), but when I add a supercharger (I don't know alot about superchargers!) I need to know what kind of a piston head combo I need for compression. I
think i might need something like 8.5:1 to 9.0-1. I just don't know what kind of heads I should use. what about Victor Jr.'s??

any input would be great! thanks

sounds like you got a good setup planned for your motor.. just out of curiosity what is it going in?... anyways the gear combination with that tranny sounds good but yes you need a lower compression for supercharging applications like 8-8.5:1 i think is about as high as you would want to go...as far as the cam i have never had any personal experiences with a voodoo cam but have heard bad things my advice is to check out a company called Chet Herbert, they have cams that are specialized for supercharger applications and any other application you can think of if you pm me i can give you the phone number..... now heads is something that i am not real sure about for supercharging i would get several opinions on this, but if it was me either some smaller AFR or port the stock heads i would use stock heads mabee even GT-40s and port them.

Originally posted by BillyWindsor
i would get several opinions on this, but if it was me either some smaller AFR or port the stock heads i would use stock heads mabee even GT-40s and port them.

Billy thanks for your reply!

Yeah i'm asking around for feedback. A couple ppl suggest I used a Victor manifold along with AFR 225 heads (reworked CC) because of the S/C.

As Far as the cam, I have not dealt with a Lunati, but I have heard the Voodoo profiles are the "most aggressive streetable" cam I guess

This setup will be going in a 2000 Stang that will be heavily modified and refit! (a "today's hotrod" so to speak)

sounds like a fun project.... i wish california had more relaxed smog laws.... if we tried that kind of stuff with a 1974+ car we'd be seeing the insides of a jail cell.... with gas prices at the rate they're at you'll make even H2 owners laugh ...
sounds like a fun project tho.... i'd reccomend stock heads with a port and polish... on the intake the victor jr might suit you better than the air gap... air gaps aren't the best when it comes to supercharging...... you might have to pick your carb depending on which supercharger you use as well.... i know if you wanted to keep it retro style, you would need to use a paxton, which gives you 2 choices on carbs, a holley 700 and a holley 750...

Originally posted by thesals
with gas prices at the rate they're at you'll make even H2 owners laugh ...

LOL thesals, yeah thats why my 454 is parked right now!! I only drive it about twice a month! However, I plan on dropping in this engine in a few years so I hope gas prices are tame then.

as far as the S/C i'm still looking into that. the Paxton Novi 1200 (I think thats it) seems to be ok.

do you have a cam suggestion by any chance?

I'd reccomend something by crane or even crower.... both i've had good luck with cams.... crane gives great tech support.... crower... you better just know exactly what you want..... I'd reccomend calling crane, get some specs they reccomend by what you tell them your engine is gonna have.... then take those cam specs they give you and call crower, and get an estimate on the price for a cam with those specs.... it'll prolly be cheaper than cranes

Yes crane would be a good choice as well i also have a 351 windsor i am running a crane powermax with 290 int and 300 exh. adv. duration the rpm range matches well with my intake a victor jr.. 3500- i think mid 7 not positive lol but yeah i have a stall converter as well 3200 and it should be quite a setup. but with a supercharger i would love to see what it could do so let me know when you do all this
Billy

Guys thanks again for the help! i'm getting a good idea of what to do as for adding a S/C!

I have just one more question. Lets say I wanted to go ahead and build it N/A and not worry with a S/C. Would it be ok to use my previous specs for the buildup? exp. GT40 heads (as previously mentioned), RPM air-gap intake (b/c a Victor would be too much without a S/C? ) CHP stroker kit (or another kit if I find a better package) and a custom cam that would work with the setup.

Keep in mind, my goal is streetable top-end performance lol

yes you could use the same setup for a naturaly aspirated motor but i would still reccomend the victor jr. intake and a higher compression ratio ... mabee like 9.5-10:1

If your going to run a 351 stroked to 427 you have to have real good heads to make horsepower. strokers love to breath. I would go with big AFR's or vic. jr's. I also have a 351 with Trick flow heads and an air gap intake. I love the intake for street use. If I had the hood clearance I would have gone with the vic jr. Also, I'm using an Extreme energy cam from comp cams

Originally posted by BOSS351
I love the intake for street use. If I had the hood clearance I would have gone with the vic jr.

hey Boss

Yeah, that Vic Jr. intake sounds good so far. It might night be a bad idea to match it up with the Vic Jr. heads either (eventhough the AFR's are probably superior, they are costly as well) As for hood clearance, I'm going with an aftermarket hood. I do like comp, i've got a magnum 292 in my 454, its awesome!