Pulling the engine again just after 800 or so short miles. I have a rear main seal leakng, I think a blown intake gasket and I want to inspect my main bearings, so easiest to just pull the engine over the winter and do some additional detailing while I am at it. My specs are given in detail below. If I have it apart, I might as well try and make some improvements and would like to solicit some suggestions. It is important to keep in mind my original objectives which I felt I came pretty close to achieving. Haven't tried slicks at the track yet though, to verify performance. Cost is not a major issue, although I try to be sensible;
-Car is mostly a cruiser, but will see the track 4-5 times this year. It must acheive time slips that prove it has GO along with the show.
-Power band should be 2000-6000rpm with peak hp at 6000 and shifting at 6200 or less. The car currently cruises nicely at 70mph at 1800rpm with the TKO overdrive and that is a consideration in cam selection.
-Driveability is an objective, so good low-end response, idling, and ability to drive by a gas station is important. I currently get 17mph and still improving. I think a pair of Holley or Demons carbs might make more power, but the Edelbrocks were chosen along with the cam specs to make it an efficient driver, but not seriously stifle performance.
-Car weighs 3818 lbs with me in it, full interior, radio and full gas tank. I don't want a roll bar. Car must do 11.5's/ 120mph all day with a low RPM launch and slicks, but have potential for 10.9's if I have a change of heart and decide to put a roll bar in, remove interior, minor engine tweaking and a higher RPM launch. I run a TKO 5-speed and a 3.42 rear with an effective launch ratio of 4.43.
-Reliability is important, so that it can be driven a few seasons without any teardowns or constantly fixing something. Anything that provides a little more insurance is a plus.

Some of the items I am currently thinking are:
-Beehive springs and titanium retainers for a little more insurance against valve float for the hydraulic roller (have rev kit already)
-Crank scraper and windage tray (worth it? I hear may cause problems by reducing oil splash on the comp hydraulic roller lifters)
-Head porting (may not do because bigger ports mean higher rpm and I don't want peak rpm to come any higher than it does now)
-1.6 ratio roller rockers (concern is I have close to enough lift to match the max flow as reported on the standard AFR street heads and may also put unwarranted stress on springs and hydralic roller set up without much performace gain.
-Stroke to 383ci with a SCAT 4340 crank and add the next bigger hydraulic cam from Comp (NX288HR-.520/.540 lift, .050 duration at 236/ 248 with 113 lobe separation) which should keep peak hp at the same RPM or lower, but add a bunch more hp (On the street tires I run 99% of the time, I can't put what I already have to the ground, so maybe foolish if I can acheive my track goals with the current set up).

Perhaps I am close to where I need to be already, but always thinking about the combo.
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·355ci SBC
·Eagle Forged Steel 4340 crankshaft, ARP studded bottom
·Eagle ESP forged 4340 H-beam rods
·TRW forged reverse dome blower pistons, Speed Pro molly rings, 7.6:1 static compression
·CompCams hydraulic roller cam (276/288 advertised, 224/236 @.050 duration, .510/.527 lift with 1.52 rockers on a 113 lobe separation)
·Comp Pro-Magnum 1.52 roller rockers with 7/16 studs
·Air Flow Research 195cc CNC ported aluminum heads, AFR Hydra-Rev kit
·Littlefield competition series 6-71 supercharger, teflon-stripped 7 hard anodized, 14 lbs boost
·Twin 750 Edelbrock carbs with custom oversize jets
·1&3/4 inch Hooker Super Comp headers, 3" dual exhaust with cross over pipe
·MSD 6AL ignition & Pro-billet distributor, 12 degrees initial, 36 degrees total advance

First off, I figure your eff. lauch gear ratio is too much, imho!! That may be why you can't plant properly out of the hole.

A TKO has a 3.27 first gear ratio so that times 3.42 put you at 11.18 to 1! 2.73's or 3.07's may be better instead of the 3.42's???

And fwiw, my 350SS car's bone stock final gear ratio with my M-20's, 2.52 low gear and 3.31's come out to 8.34 to 1 as a reference point for you..

I guess what I am trying to say is that when you get your combination going, you should have way more then enough midrange grunt to be able to pull gears like these fine imho...

Second, your weight is a killer, imho, but to each his own.

I can't say about the rest of you combination except hat BIG ports help a blown motor regardless!!

Maybe somebody else that is more attuned to what you are trying to do will chime in here and offer better help??

pdq67

I wouldnt port the AFR heads unless you take em to somebody who really knows how to work an AFR head. Its not just the size of the port and the amount of air they flow that makes em a good head. The reason they flow as good as they do with their given size has a lot to do with the actual shape and contour in the ports of those heads. you can hurt them by not portin them properly. I defnitely think that stroking the engine isnt a bad idea. Thats one thing that will for sure not hurt your cause. I dont know about that cam though. Thats a big jump all the way from a 224 degree to a 236 degree cam. And with the supercharger, Im not sure that you will need that much of a cam. Blown motors dont need a real big camshaft and even a less than adequate cylinder head will run well with a blower cause well, everything doesnt have to move air quite as well on its own due to the fact that you have a blower to force air in and make up for any cruth. What I would do is stroke it for sure, keep most everthing else the same but have a talk with the cam maker of your choice to see what they would reccomend. I would think that you have the potential now for easy 11's as is with dyno time to tune it properly. Either way, getting the right cam for the blower is the biggest thing so have a talk with the grinder of your choice.

From one of your other posts, I think I would worry more about making it hook, as it already seems you have the power to meet your goals ;)

Yes...but that is a matter of a new pair of MT ET Drag slicks which will accompany her to the next trip to the track.

Engine still has to come out, so I trying to take advantage of that while the opportunity presents itself.