STAR

iTrader: (1)

Can you elaborate on this? I know in an na application more overlap will make more power...I can't see why this would not be the same for FI. Some say you will blow boost out with overlap, but a bigger cam should make the same power with less boost, more efficient no?

LS1RedZ

iTrader: (19)

Sounds like my car. My IATs are through the damn roof in this Texas heat.. I need to get a meth kit on mine sometime. See what she'll really do.

'Trust'

iTrader: (24)

Long explanation short, overlap on a boost application will bleed boost off internally prior to combustion, i.e. wasting it. 0 or negative overlap will keep it in the cylinder during combustion.

Overlap uses the exhaust side to scavenge air to the combustion chamber from the intake side, with boost, it's forced in so you do not need overlap. The downside of overlap is it kills vacuum (as both valves are open at the same time).

allthrotle

iTrader: (2)

Trust what trans were you running when you hit the 9.98? 4l80 or 60?

to the op my mods are in my sig. Im pullied for 7lbs but I only see 5 at my high elevation. Im gonna have it re pullied for 10-12lbs. I also recently posted a video of my car at the track in the multimedia section.

'Trust'

iTrader: (24)

4L60E, never had a chance to put a 80 in it before I sold it. I don't know how the thing held, never hiccuped though. I just had converter issues once the car was making more power.

LS6427

iTrader: (2)

I think we have two stations here now that sell E85. But what happens if you build a set-up to run on E85 and then you can't get it.......what does it entail to chang things to run on pump gas 93 0ctane?

Since my car is 12+ years old, I was going to buy an entire new wiring harness when I do the new engine anyway. So I can then get and uase a 99+ PCM if its sufficent for this type of build. That damn BS3 is way expensive.

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blue00ZZleeper

iTrader: (5)

I have a similar build in the process. I posted not to long ago in the "procharger thread" started by tabur unit. Check it out

LS6427

iTrader: (2)

will do......thanks.

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blue00ZZleeper

iTrader: (5)

I bumped it for you.

LS6427

iTrader: (2)

So whats the next biggest unit that will also just bolt-up the same as the D1SC?
And how much more power can it make than the D1SC?

Might as well go as big as possible as a bolt-up unit?


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blue00ZZleeper

iTrader: (5)

F1D, F1's, F1A's would most likely be your best bet. They'll bolt up and are proven setups. I'm going to max out the D1 and see what she can do...then go to a F1A most likely

Nitroused383

iTrader: (10)

Has anyone ran a D1R? I think the 0 overlap rule on a blower cam is total bs. Non sponsors have gained 80rwhp with a cam that had 40 degrees of overlap over a blower cam. Go do some reading on some of the engine masters blower cam tests from the past. Some of you guys need to start thinking outside of the box, or atleast do some thinking for yourself.

Bob@BruteSpeed

iTrader: (16)

I agree that the F-1A is a great way to go. Everything bolts right up as it does with the P and D series. Bob

forcd ind

iTrader: (7)

my #'s are lower than most, but i have run quicker than some claiming over 100 HP more, so what does it really mean, lol
403, Scatt rods/crank, Wiseco pistons, AFR 225 heads, 9.1 comp, EPP cam, 750 blowthru carb, Edelbrock intake, MSD 6010 box, 4L80E trans, intercooler3900 lb Chevelle
with the D1SC intake pulled off, 275 drag radials, best ET was 9.92 @ 135,
11 lbs boost
on the chassis dyno, showed 617 @ 6400, 516 torq @ 6000-the converter didnt like the dyno, stalled a lot higher than in real life
i suspect the cam is somewhat of a mismatch for the heads, 215's would have prob been a better fit, or a custom cam designed for a carb, big heads, but beggers cant be choosie, lol
i run an 8 rib conversion, the AFR's were a little rich, around 1.9, was around 90 degs outside that day-i suspect working on the 60' times (1.60) and cooler weather, i could be down in the 9.8 range, but prob wont fool with it since its just a street car

Bob@BruteSpeed

iTrader: (16)

KP got into the 8's with the same cam and AFR 225 heads, with a 347 and a D-1SC. He was running the D-1SC at max impeller speed, probably at 16 psi or so. Bob

THE F-BODY KING

iTrader: (10)

7xx RWHP
6xx RWTQ

No Meth
Pump 93
408 cid 4.000 x 4.030
8.8:1 CR
LS2 Based 6.0L Block
232/242 .612/.628 114+3
FLT level 7 4L65E

overhere

iTrader: (2)

510 rwhp
626 rwtq

93 octane
50/50 water meth
stock 6.0l with epp blower cam
750 blow thru carb
9 psi of boost
6000rpm rev limit

'Trust'

iTrader: (24)

I don't think he ever went 8's on the D1-SC? Thought his best on that was low 9's? He wasn't at max impeller either, 7.25 SDCE with a 3.4 on the blower.

On his old car he went 8.90s but I'm pretty sure that was with the F1, didn't crack it with the D1-SC.

helicoil

iTrader: (104)

Yep, I'd say you are right, I have the old car (well, the blue one anyway), it runs 9.40's with a D1SC currently making 17lbs at 7000 RPM (7.25/3.4), although this one has a 224/227 camshaft in it, low overlap.
I am pretty sure the black car had a 364" LS2 block when it went 8's with the F1A and EPP's camshaft. It didn't run 8's with the D1SC and a 347" LS1/6.

This car ran 9.20's when he had it, and I am anticipating that was in the late fall months or very early spring months with great DA, weather I have yet to race it in. I'll let you know when it is here, I missed the early spring this year. I have put about 25 runs on this car now, all within .1 of one another. It is very consistent for what it is, a solid 9.40 car in the heat without being leaned on. It runs 16* timing and a 11.5:1 AFR and doesn't/hasn't pushed a drop of water on C16 in all of those 1/4 mile runs.

IATs are 150-160 in the summer night heat at the end of a run. In the fall months this will improve substanially and allow more HP to be made.

I also agree on the overlap aspect when chosing a camshaft for these type engines. Centri cars make more HP with bigger camshafts where added overlap is inevitable, don't let that decision hold you back on HP. This car would no doubt run better with a 232/240 115 lsa camshaft over the 224/227 114 lsa cam curently in it. In fact, Kevin made the swap at one point in the 364 LS2 and made a small gain.

LS6427

iTrader: (2)

After many recommendations.....it looks like the D1SC is not the one to go with, since the F series sc'ers will fit also as direct bolt-ins. I didn't know this.

So F series sc'er is the choice. Question is....which one?

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