Thread: sbc 400 for 1984 chevy k10

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i looking into rebuilding my sbc 400 in my 1984 chevy k10 it is currently in the truck still i will be pulling it this weekend and starting disassembly( i have a really loud knocking from the oil pan) iam planning on a total rebuild unless its an easy fix but doubt it. does anyone have any suggestion for a hot 400 set up for the street a have a buit 700r4 and a 10 bolt 8.5" rear with 3:73 gears and iam spinning 36" tires

I know of several people who run 400s. An I have a very good set up for the street that makes over 425HP and almost 500 ft lbs of torque.If thats something you would be interested in PM me. Or email me @ robert.ogg@comcast.net

those are basically the numbers iam looking for, i need a broad power band with my truck weighing 4000 lbs. i need alot of low end torque. i would also like to put it down on some of the punk kids around in their 5 liter stangs !!!!!

Many yearns ago, I had 2 '79s with 400s; one, a Suburban, one a pickup, both 4x4, both 3/4 ton, with suspension upgrades and 33s, or later, 35s on the Sub. The Sub's engine was rebuilt, .030 over bore, and -.010 on the crank, stock heads mildly massaged and port matched with a Weiand SP2P, Doug Thorley Tri-Y headers, a Crane "low RPM torque" RV cam, HEI with MSD or Accel upgrades. Also had a 4x4 dually with a 454. The Sub was the best runner of the bunch; never had any problem getting into SoCal freeway traffic, even with a 10K trailer; it pulled better than the 454. With both the 400s, running empty, or with a light load, maybe up to 1K lbs, mileage was about 10 - 12 around town, but out on the open stretches across the desert batween "LA" and "Vegas", Phoenix, Tucson, and other points east, the mileage went up to the high teens on "cruise control" at 70, and a couple of times, the Sub poked the hell out of 21, running with just my overnight acoutrements and a couple of ten drawer "top boxes". On the obverse, the dually with the 454 always got 8 to 12, loaded or not, fast or slow; it also pulled grades with a trailer a "little" better than the 400s, but not much. I ran the crap out of those trucks, and with good regular maintenance, they all served me better than I could ever have imagined; all were over 200K when I sold out, and they were still running well. Mind you, they were definitely working trucks; not off road racers, but extremely capable off road, or on; never got stuck with the "fat tired" ones, but did get the dually bogged in the sand once in a while.

I'd never look askance at a 400; it's a good engine if it's built correctly.

well there is a local shop that has built some pretty stout 400s for some local guys. i was just considering having them do the machining and me do the parts shopping and assembly myself. but it depends if i can hit them in there slow season they will give me a break in price iam sure

what the opinion on a stroker kit for small block 400s ?

iam having trouble finding exhaust for my truck to i found nice cerimic coated headers from summit but i cant find a kit to fit my truck any suggestions ? my truck is an 1984 and i live in nys do i need cats ?

Go with the 400 SB+30 over 406 Build . Make sure you have a Good Cooling System . For your Exhaust System . Run 2 1/2" Straight Pipe with Turbo Mufflers and Turn Downs at the Diff .

have you run that set up before tango ?

The 406 in the Pickup No . That Exhaust Set up On a Pickup More then Once Works Great .

iam looking into buying a 383 stroker with 450hp and 500 lb ft torq. if my 400 is beyond repair. the headers i want are hedman ceramic coated 1 5/8" to 3 " they are around 500 bucks from summit. do i need cats on an 84 ? if not i want to run a short 3" exhaust what mufflers are recommended for a nice and loud sound ? iam just going to put turn downs on right out of the mufflers

I would Try to rebuild That 400 SB Chevy . I personally do not Like 383 Builds . Why Not Run a 350+30 over 355-375 HP 4-Bolt Main Build ? As for Your Truck Needing Cats ? I would say it would Need a Bit more then That for 1984 EPA Standards . Now its an Off Road Truck . It may Not need the EPA Testing in Your State any Longer. You will need to Find Out .

well i was trying to get the 400 out of my truck but ran into some problems.... i cant spin the fly wheel to unbolt it from the torque converter any suggestions ? i really done want to pull the trans to. will the torque converter just slide out of the trans or no? and the cherry picker i borrowed from a buddy is broken so now i have to go rent one.