CAMp3RO

well, finally paid off all the bills, so now its the engine's turn. sat down and played with desktop dyno a bit and came out with some very nice numbers. like i said before, i am staying tbi, so i'm not leaving ya guys. first off, goin with the summit 1103 cam. 214/224 .442/.465, still very streetable. i've got an edelbrock performer intake right now, but would really like to switch to a single plane manifold, so i'll trade/buy/sell with anyone if they have one. still keeping the stock heads, but may do a bit of porting/polishing to them. finally, getting some of the hedman shorties. on a budget, and the slp's are way over the budget. with that combination (getting throttle body bored out too), dyno2000 gave me a reading of 337 hp @ 5000 rpm and about 425 ft/lbs of torque @ 2500 rpm. not too shabby. with the single plane manifold and bored out tbi, it gave me over 350 at the flywheel. not too bad, huh? i know i wont see all of this and it is a rough estimate, but this is a very nice change from the 170 hp of the 305. trying to get winaldl working on my laptop, but i think i screwed up on my cable. may have burnt up the transistor, but not sure how to check. so, any feedback on anything i'm forgetting or i should change, lemme know. i begin the rebuild process this week.

Tas

LO3 heads on a 400???? I hope that is temporary otherwise its a real waste of a 400.

CamaroGuy71

well at least wit hthose heads he'll be runnin some serious compression

Slade1

Serious compression, low flow...

CAMp3RO

wait wait wait. sorry about that. not l03 heads, the stock 400 heads. i got a complete 400 engine out of a truck, so i'm pretty much just rebuilding what came on it, just changing the cam and intake. sorry about the misunderstanding

iroc22

Oh geez! Stock 400 truck heads You're gonna have to re-evaluate your cylinder head standpoint.

CAMp3RO

well, like i said before, i am on a very tight budget. i'm not sure if they are the truck heads, however. the engine was put into the truck. the heads are #333882. they were listed on the mortec site, but not really any info besides them being from a 400. if i had more money, i would switch to some vortec heads, but i do need this motor in the car in the next month. tweaking can come later.

dimented24x7

iTrader: (2)

my brother had a 400 out of a truck and it was slow. Youll definatly want to get some good heads when money permits. Even a bored tb will probably be small for that motor. Id try to also get a 4 bbl holley injection system somewhere down the road to really take advantage of that motor. Again, if money permits. I know the broke feeling i have a slow crate 350. Feels and sounds like the ol' 305 but it doesnt leave a smoke trail or deposit all its bodily fluids on the driveway.