well the final chapter is about here, i've sat on my hands with this project long enough(lazy!) so i'll be dropping off the block at my machine shop to have it finish and align honed, then assembled, heres the final list of parts that will be dropped off with the block:

dart SHP block, 4.125 bore x 3.75 stroke
JE extreme duty pistons(-36cc), 5.7" ohio-crankshafts H-beams and their 4340 forged crank also
hellfire rings, AFR 210cc/64cc heads
Vic jr. single plane manifold with Brent Davis e85 carb on top
car is already plumbed with -10 to a magnafuel "2000hp" pro-tuner pump, -8 feed and return on a stock, sumped tank
twin 76mm turbos with .81 a/r housings
rvmvb th400 w/t-brake and 4000rpm stall, 2 step
28" tire with 3.23s

I sent out 4 cam requests and comp was the only one that responded and they did so the very next day, so they got my business....screw the other three guys.
that cam came in on thursday, 234/238, .576/.576, 110ICL, 114LSA

 

Good luck on the build, I am about to embark on the twin turbo journey aswell, however I will be using smaller turbos less cubes, and a LSX power plant with overdrive.

 

what size lsx engine are you building and what turbos are you planning on using?

 

I will be running the stock 364 cubes with twin 70mm turbos until the winter of next year when I will do a built 370" engine.

 

the junkyard lsx builds are getting to be a good bang for the buck!!

 

awesome build. will be checking it out as it progresses. Im still thinking about ditching the novi2000 and going Twins on my 383lt1.

 

you could sell that novi2000 and easily buy two of the "better" quality ebay turbos, they've come a long way quality wise from even 2yrs ago.

 

I'll spend the $ on real turbos. PT76s / GT35R /
or a single like I had before S475 / HX55

 

I've seen "real turbos" take a crap in one weekend, the brand name ones are made in sweat shops too! but the name is what matters right? lol.

 

Buy my T60's so I can go to 70's Cut you a decent deal lol

I will be following this setup. You have abit more head and hell of a lot more turbo than me with similar everything else. Similar trans/converter, similar cam, similar compression, similar final gearing. I will be curious to see how it handles those large turbos. I am seriously contemplating 210cc heads swap this winter if I can penny up the cash. Selling the old AFR 195's will make up for majority of the price. Then again, the 195's are doing everything I need right now. I have power to go 9.20's-9.3's I think, just need a Tbrake and serious rear end.

Good luck

 

i'd keep the 195s since you already have them Justin, those heads are not holding you back, i can guarantee it. Looking at AFRs website, the 210s BARELY outflow the 195s even with a 15cc bigger intake runner, if was gonna ditch afr 195s, i'd be looking into a bad *** head in the 215+cc range to make it worth it....a little room to grow if needed too. Step up to twin 70s with a good tune and you're gonna think you bolted on some fully ported yates heads lol.

 

I had a friend say the turbos arent holding me back and that my heads may be small...since he is an LSx guy. I talked to Chad Speier about his Profiler and AirWolf heads and he seems to think the 2.08" valved 210's will make more power than my 2.050" valved 195's fully ported... I know the flow numbers dont look all that much different but the dynamics on the motor may show results not seen on the flowbench. But he did say my cam is "small". I think it is, but I figured the turbos would help extend the rpm range to a desired shift point of 6500 since I expected it to peak in the 5800-6000 range but so far I think its falling short of that goal...its either the intake/heads or turbos. Chad suggested I go bigger to pull more rpm. I didnt think that would be necessary but those heads like to be in the .600's lift and can support 6500 rpm peaks on a 406 motor. I just need a mid 240's cam. I was thinking 242/242 on a 113-114 lsa... .600".
Also he seemed to think 220's would be too big. CSA is 2.4x inch i believe and thats good for a bunch more rpm than I can use. Alot of guys say turbo/blower motors you build like a n/a motor for desired rpm range, so those heads are too much. Plus any good 23 deg 220 head is over 2000 dollars so thats a good bit higher than i wanted to spend.

Wonder if I should do the .96 A/R's first on the 60mm's? I dont know if I have a backpressure problem or not but going from single 4" to dual 3" exhaust cleared up 2 psi of boost off just wastegate springs, so I eliminated manifold pressure somewhere.

 

I really don't think that your cam is too small to the point that it can't/won't do what you want, those 195s WILL support power up to 6500rpms with good springs(which i know you have) even on a 400" engine. That $1500+ you would have to shell out to get a "decent" 23* 215cc+ head, you could buy 2 mpt70s with lots of change left over. Get a REAL tune and watch that car fly!! and best of all, you'll do it with great idle quality and street manners. I'd go straight for the .96 hotsides on those t70s too....those p-trim wheels get spinning real fast. I just think that the t60s you have now with the .68 a/r are hitting a wall up top(5000ish rpms and up) not so much because of the .68 hotsides but because of the tiny 60mm compresssor wheels thats just working overtime on that size motor. Have you taken any IAT readings at the track?

 

Never took any readings..my IAT/MAT sensor is in the manifold but it gets heat soaked and doesnt change temps at all. On a run down the track I've seen it change a half deg COOLER while in 15psi boost. First run of the day after sitting cold for awhile, MAT will read like 80-100. After it sits hot for awhile it will get up to 150. Dont trust it for anything so I am changing its location and going to a different sensor.

Not sure if the P-trims are too small or not. .68's are small housings...i think that hurts alittle. That one guy on turboforums runs twin .96 a/r 70's and was in the mid high 8's at 160+ mph.... spooled by 4500. I rather see full boost at top of 4000 where my converter is and right now I have that and then some He changed to 76's I believe and ran abit better. He pulls much more rpm than me tho so he can afford to have 4500-5000 rpm full boost or so.

I'm curious to see how your setup does with 76's.

 

I'm curious to see what this motor will do too! i'll be using p-trim wheels with .81 housings on my 76s....i prefer to have good sized compressors and then use the exhaust housings to put spool up where i want it, thats why i'm doing the 76mm/.81 ar combo....plenty of compressor for a cool, efficient charge and decent spool with the "mid-way" .81 housings. I'm trying to have my cake and eat it too lol!