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View Poll Results: Which engine will be most streetable at 400 rwhp with TPI?
350 15 24.19%
383 stroker 22 35.48%
400 25 40.32%
Voters: 62. You may not vote on this poll

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Old 06-28-2003, 11:37 PM
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Which is the better daily driver?

Ok my goal is to build an engine with about 450 hp & torque at the crank. Hopefully achieving 350 to 400 at the rear wheels. Anyways.. I am able to get a complete 350 engine from a relative fairly cheap. In addition I've got a 400 crank sitting in the garage. And also have a complete 400 sbc engine at my disposal.

My question is. Which motor would be most streetable pushing approximatly 350 to 400 hp at the rear wheels. A 350, 383 stroker, or a 400? Also I'm hoping to be able to get an aftermarket Accel TPI setup to run on it. I figure this will help achieve a little more horsepower, throttle response, and gas mileage. Let me know what all of you think.

It'd also help if anyone knew some surefire setups that would get me the power I'm looking for.

Thanks,
Panther

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Old 06-29-2003, 12:00 AM
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Your comparing apples to apples?
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Old 06-29-2003, 03:56 AM
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Yeah. Which apple will last the longest and be the easiest to pick from the tree? hehe
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Old 06-29-2003, 01:30 PM
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PERSONALLY id go with a 383.
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Old 06-29-2003, 02:45 PM
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I agree with the other guys, But in my personal opinion dare to be differnt (even if only a little). Alot of guys run 350's so I would say nix to that idea. I would also rule out the 400 because they can sometimes be a little hard to cool. I would go with the 383, Lots of tire shredding torque and enough displacement to get a little wild with a cam.

There is one downside to the stoker. You said you wanted to put a TPI efi system on it. If you really want to do this then be warned, The TPI runs out of breath in the higher rpm range on a 350 cube engine. So if you want to run it on a 383 then you are gonna have a problem feeding those cubes with even a highly modified TPI system. The larger displace ment will also make the problem more noticable than on a 350.

Tom
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Old 06-29-2003, 06:06 PM
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The relitively high rod angularity can cause problems when building a high reving 400.I think your best bet is to build a 383.I would not worry so much about the fuel injection system feeding that puppy becuase you will more than likely not be running over 5000 RPM all day long.Any way the TPI system can feed pretty much any small block very well with the right injectors.Just make sure you port the heads and intake decently and you should not have a problem.And make sure that the throttle body will allow for enough flow.
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Old 06-29-2003, 08:04 PM
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My personal preference is a 5.7 inch rod length 406 with a mild hyd. roller. You won't need to rev it.

I built a 383 back in '82 and it was OK but my buddy built a similar 400SBC and I liked it a LOT better. I also owned a 1974 Monte with a 400 SBC and never had a problem keeping it cool and I ran the crap out of it. I still have the short block to this day and hope to put it to use one of these days. Just make sure your cooling system is in good shape and run at least a 3 row radiator and you'll be fine.
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Old 06-29-2003, 11:13 PM
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My vote is the 400sb

.030 over 406CI 23 more CI than the 383

go with 5.7 rods to improve the rod angle lots of 400sb using this with great success.

Check these rods out from Scat 2-ICR5700-7/16 (5.700" X 2.100" bushed) EXTRA Stroker clearance 7/16" Rod bolts "Pro Series"...$269.00
at www.cnc-motorsports.com

Make sure the heads you use are drilled for the 400sb steam holes and you be ok on temp.

You will have a hard time beating the torque from the 406 good luck with which ever one you build.

If you build the 383 send me the 400 LOL
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Old 06-30-2003, 05:44 PM
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Am I gunna be the only one runnin the stock rod 400 whenever I get to it??? Screw long rods I'm keeping it simple for my first build. Besides I am under the impression that it is an ofter overrated thing to do. I have read HUGE power gains and I have read about NO power gain. I think you can have a great engine with either length of rod. Then again this is just me.
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Old 06-30-2003, 07:39 PM
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Quote:
Originally posted by stonedchihuahua
Am I gunna be the only one runnin the stock rod 400 whenever I get to it??? I think you can have a great engine with either length of rod. Then again this is just me.
Build the short rod motor for lots of low and midrange and you'll love it. I agree either one would be a good choice but the long rods are easier on the cylinder walls over time. They don't put as much side load on the piston. Perhaps a minor thing but if you plan to keep it and put a bunch of miles on it it CAN make a difference on cylinder wall life.
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Old 07-01-2003, 01:27 AM
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Alright... Seems like I may be going with the 383 stroker. Will probably build it up for around 300 horsepower to start with. Then upgrade components later to acheive the wanted 400 hp. I'm planning on buying a Pro Competition G-Tech meter. The brand new version with the LCD display and everything. Does anyone have one of these and is it worth having? I mainly want it to see what sort of changes in performance I get while upgrading. Sorry 406chevelle, the 400 may be goin into the GMC Sierra S-15 if I don't use it for the car .

Also I was kind of curious if any special cooling is required for a 383.


Thanks,
Panther
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Old 07-01-2003, 01:33 AM
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NO special cooling is needed for a 383 or a 400 (cooling problems are a myth, or come from people who have the steam holes blocked off) Just run a big rad anyway. If this is for your camaro napa has an excellent heavy duty rad that is 30 bucks cdn over the price of a rad just like stock. I put it in my car and I'm very happy with it.
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Old 07-01-2003, 01:40 AM
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Has anyone used the late model chevy powdered 5.9 rods out of the 5.3....or was it the 5.4???? I have used 2 sets of powdered 5.7s and love them. I get them from core engine companies off of Ebay for $40.-$50 and I have seen the 5.9 rods go for $75. With ARP bolts your ready to go for cheap!!
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Old 07-01-2003, 06:34 PM
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Ain't no substitute for cubic inches, 400's will run great if built correctly and have the proper cooling system.
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Old 07-01-2003, 08:36 PM
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400sbc for me

My dad built a 400SBC for a 73 El Camino we had. It had a 750 Holly and it. Red Line was 5500RPM due to the hydrolic lifters and a high stall converter on the automatic. The engine would probably actually red line higher in reality, but under heavy acceleration it would float the valves at 5500; needed solid lifters!

Point is, when I was given the car I ran the dowah out of the 400cid. I put many miles on it and went through several sets of tires. Never had it checked officially, but according to the est. by parts used, it was running around 400+HP. I loved that motor and it ran better than any 350 I've ever owned.

I have a deep down respect for the 400 and have had 3 in various cars.
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