Which one fellas and fellets? Im thinking a 396 would be easier to do because it is based off a 350 block where the 406 and 427 would require a 400 block. Im going to stay with FI. Dont know if Ill go with an aftermarket DFI or try to stay with the DIY times and make my present harness fit. I dont know what intake i should go with, but it would depend on the heads. If its vortec, I really only have 2 choices right now, mini ram III or the Ram Jet intake. This wont be for a while now, but I want to hear your opinion on this. I like the long stroke of the 396 for major torque, but a 400 or 427 block would produce way more power per mod. This block needs to be streetable as it will be a "g-machine." Id like to hear your opinion and which do you think would best fit what im trying to do. Id like to make between 400-450hp at teh fly. Thanks guys.

 

396 is a Big Block, buddy.

I'm still debating on either a 427, or 406 for my car. I'm leaning towards the 406, because I could built it cheaper, and get the parts easier, but the 427 will pump out numbers that are simply insane.

You want 450hp at the fly, why don't you just build a 377 or 383? Or even build a 355?

I've seen 450hp out of 4banger imports, and they are still extremely streetable. I don't see the reason to go with THAT many cubes, if you want less than 500hp.

I'm shooting for 600-650hp at the wheels, N/A, and built strong enough for forced induction (for a later time). So I'm going with a 400block.

 

An SBC 350 can be stroked to 396 but with custom pistons and rods(read:$$$)..I rather get the bigger block and do whatever with it.

Daz

 

I understand a 396 can be pulled from a 350 block...but who in their right mind is going to dish out that kind of cash for custom rods and pistons?

 

you can get into 400-465 h.p form a 355 if done right without gas being shot to it at all .:lala:

 

I would very much like to see you make 600HP on a motor built for boost that your running N/A. That's would take large quanities of cash.

But good luck anyway, the 400 block is the best route IMO.

Later, Garrett

 

Inches are your friend on a street engine... actually, they are on a race engine too... go for the 427 if you can afford it.

 

The engine will be a 600hp street motor, then when I decide on a route to boost it, I'll be replacing the heads and cam. It will still be a 580-600hp engine after the different heads and cam, N/A...but it won't be very streetable without the boost...

Think about it, it can be done, and for a lot less than you're thinking.

 

Not trying to squash your idea, but if you can pull 600hp from a built engine before FI there would be no need to change the heads/cam. I would do a little more info seeking before deciding on a cetain "number". What are your main goals(some track some street weekend car etc.) with this engine.

Take into account whatever you build the tranny is going to need a lot of help as is the frame to support the engine. Formulating a plan to maximize the vehicle and not the engine is the way to go. A 400 block running that large of a stroke will have to be clearanced to fit which weakens the block which is already thinner than a 350 based block so a partial filled block may be in order. What's the budget consist of for this project.

I have no doubt that you would like to do this, however the expenses will mount very quick. You've also noted using vortec heads(not on a 427 buddy). As cast they are great flowing street heads. The chambers are little too small, guides have to be relocated, when you're done those heads which seemed a good deal will be more than the afr 227's that should go on it. Block look into the little M by dart if you want a 400. at 600hp before FI you are definitely gonna need 4 bolt steel caps to retain the crank. To spin that 427 to it's performance level a very good valvetrain is in order. Not saying it couldn't be done but a long rod 383 FI would hit your goal also without compromising the assembly....

 

HEY... forget about the newb... me first... let the newb make his own thread!! there will be no thread hi-jackers on my watch!

 

no bottle no forced air just motor and 112 octane, still getting a base when tranny gave up on me this year 87 camaro with 26x10.5 slicks on back 2980 lbs. w/driver (225lbs of driver)

 

Rod/Stroke ratio on the 427 is pretty awful. They make great power but if you are at all concerned about longentivity on the street, go with a 6" rod 400 or 383 to minimize side loading and give your ring package and cylinder bores a break.

If you are just going for the big numbers and this motor will see limited (weekend warrior) use, go for it!

I like the Accel Lingenfelter designed SuperRam setup with 190cc to 200cc AFR's. This combo has made big horsepower and torque.

http://www.airflowresearch.com

Check out the archive article section especially Pumped Up part 2.

 

This is gunna be a street cruser and will see a lot of street time and some strip time durring the summer. I am gunna build up the car to make it ready with new trans and rear.. thats not what im worried about. I was asking for some input on some of the engines. It needs to have a diet of pump gas. Im really looking for over 400hp n/a. I think that combined with the cars look and stance will make a great car. I was thinking of the cheapness of a 355 and how I could make that into a decent motor, but I dont see over 400 without some serious streetablity problems. Other engine ideas would be good too. Thanks.

 

If youre only looking for 400-450hp...stick with a 350. I understand you though wanting something different. Im debating between a 396 LT1 or an LS6 right now.....It just depends on what you want to spend and how fast you want to go that dictates what motor to have. The 396 kit isnt much more than a good 383 rotating assembly. The block just needs a little more detail to make it all go together. If your serious about big cubes, be prepared to shell out for some good heads.......thats what makes the engine to me, how well it flows depends on the heads. If you were serious about the 427, I would go with the Dart Little M block......good luck with whatever you decide. Heres a link to my machine shop that builds 396 strokers, and they built my current 383 LT1.

Nu-Tek

 

I've always been impressed with 377 all bore. I am yet to find one making less than 500 HP