New2Chevy

iTrader: (11)

Jon, I'm using the LT1 PCM but am switching to an aftermarket LTCC ignition setup.

http://www.fullthrottlespeed.com/ite...050LTCC+eq++Tp+

It's plug and play and, as you know, much better and more reliable than the optispark. I found 8 LS1 coils for $100.00 on another forum

Now, all I need is the module and harness from the above link.

By the time I can afford my engine upgrades, I'll be able to afford the LTCC harness, module, etc.

B4Ctom1

Makes sense, I was talking apples and oranges.

According to this http://www.performancetrucks.net/for...d.php?t=419154 LM7's with some bolt ons normally make like 250rwhp. So a 350rwhp M90 LM7 makes perfect sense.

Do you have a cam in your's?

Pocket

iTrader: (24)

Stock cam. Id love to replace it, but a decent custom cam kit is close to a grand. My whole swap was just over 2. I cant justify that just yet. If a used cam pops up on tech in the future, I may jump on it, but for now Ill stick to the lame truck cam

The fuel rails set me back $130 from a guy on tech. They came with about 2x that in fittings/lines. They're for a LS2 so I had to remake the adapter blocks attaching it to the intake. Ive got 4 pretty billet chunks in my toolbox that are useless to me

Tim, sounds good. I was wondering if you were doing the 24x LT1 conversion from EFI connection. That's a whole new can of worms

Atilla the Fun

Which truck cam? The LM7 cam was 191/190 duration at 50, 457/466 lift, on a 114 sep. The LQ9 was 196/207, 467/479, on a 116. If you're running the LM7 cam, I have a spare LQ9 cam in excellent condition you could try.

B4Ctom1

When ever I think of LM7 swaps I think of the turbo 5.3L Fairmont. They built the car, raced and dynoed it. Then they picked up a used LS6 cam from ebay for $86 and picked up 100rwhp. That personally makes me feel like cams in "LSanything" is as necessary as fuel in the tank. I bet if you could make one of those yourself you would!

A quick search of ebay shows a 99 SS Camaro cam for $40 +$10 shipping
http://cgi.ebay.com/ebaymotors/Ls1-s...-/110555835602

I just looked up this article on GMHTP modifying their 99 SS and they list the Stock LS1 cam as:
http://www.gmhightechperformance.com...installed.html
Even if you go for other options, it shows there is a starting place even for penny pinching.

Pocket

iTrader: (24)

I appreciate the offer, Attila but Ill wait for a bigger cam. LS6 cam is the main one Ive had an eye out for but they sell really fast. I nearly snagged a few "mild" GEN III aftermarket cams that had really good blower specs, but sadly got beat out again

If I had a cam grinder you bet Id make quite a few. Heck, my dream garage would need a state budget to fill

A friend of mine actually gave me his old 99 LS1 cam when he upgraded, but it left in the package deal for the 98 LS1 long block

BlueZee28

iTrader: (30)

Jon, I'm sending you a PM with something I found that may spark your interest.

New2Chevy

iTrader: (11)

This is a great thread you guys I love it

Batass

I just wish there was a way to use an M90 with TBI so my truck could get one....

New2Chevy

iTrader: (11)

It's probably possible, if you fabricate an intake, right?

ericjon262

you couldn't build my dream garage on any budget!

Pocket

iTrader: (24)

Why not? Instead of an intake tube like Ive got, use a carb hat and feed it like a blow through system

Atilla the Fun

'02-up LS6 cam in an LM7 is a huge mistake. Doing so will cost you 21 ft-lbs down at 2500 rpm, (naturally aspirated), and torque continues to suffer through 3800 rpm.
With turbocharging, the LS6 cam's lack of overlap is good, but with an Eaton, you can benefit from less non-overlap.
Not to push my spare junk, but to illustrate: The LQ9 cam adds 17 degrees of exhaust duration, which would reduce your pumping losses. It adds 5 degrees of intake duration, so the thing is still exhaust biased, which is still beneficial to reduced pumping, trying to force all the extra exhaust gasses out.
And despite the 2-degree wider lobe separation angle, the LQ9 cam has 30.5 degrees of non-overlap, versus the LM7 cam's 37.5 degrees.

Batass

I'm not sure I want to deal with tuning a MAP system, but it looks like I could get away with just simply boost referencing the fuel pressure.

I'm looking into it.

mw66nova

iTrader: (13)

man jon, that thing is awesome! have you driven it yet?

Pocket

iTrader: (24)

With everything hooked up, I drove it down the driveway up onto the trailer. Im not risking any sort of hot footing until the tune is in. Should be a dyno pull to see how she rolls too

Friday is going to be exciting

ZONES89RS

iTrader: (2)

Great, i cannot wait to see how much you put down on such a budget man.

BlueZee28

iTrader: (30)

Yea really, you spent a fraction of what myself and others have in their swaps, and yours is one of the cleanest there is.

Pocket

iTrader: (24)

Did I tell you I took second at G14 for Birds? Most of the people who strolled by thought the engine was stock to the car. Even had an old timer 3rd gen guy roll by saying "Those non-AC cars were pretty uncommon. Nice to see one still going"

BlueZee28

iTrader: (30)

That is awesome!!! That makes me regret our faulty fuel pump even more. I so wish I could have been there.

Pocket

iTrader: (24)

Oh well, theres always next year

New2Chevy

iTrader: (11)

Hey I hope the tuning goes smoothly and...ahem...inexpensively. I often wonder if they keep the car on the dyno longer than they really have to, so they can suck more money out of our wallets.

ericjon262

I can't wait to hear numbers! did you paint the blower, or is the lighting just different? looks good if you did.

Pocket

iTrader: (24)

Tubing is painted rattlecan black. Blower is powdercoated gray, but its the original coat from like 1990 so its flaking off badly

RSFreak

Update?!?! Sorry, I'm impatient!

Pocket

iTrader: (24)

Tuner's got it. Should know how it fared sometime next week

Im impatient too, thats my DD on the other side of the state

ZONES89RS

iTrader: (2)

Move to Texas and the "other side of the state" has a whole new meaning,LOL.

BlueZee28

iTrader: (30)

That's an understatement. I've been to Texas a few times, and it seems like its own continent. The majority of it is nothing but plains.

I can't wait to hear how the tuning went.

ShMaCk2004

I can't wait for him to make me one

BlueZee28

iTrader: (30)

...can't wait for Jon to make you a harness, or can't wait for Jon's tuner to tune your car?

Pocket

iTrader: (24)

He wants a SC kit

ShMaCk2004

damn right!

BlueZee28

iTrader: (30)

Ahh, I see

ericjon262

Me too!

Transamthunder

iTrader: (1)

Glad to see ya got it t o the tuner's alright. I am very curious what the power will be with only m90 though, and how that might translate to your dual set up. By the way I wonder if the lt1 has some of the same holes in the head like a sbc to use the same plates that you used to mount the super. Also did you pin the balancer to the crank and what balancer did you use. Also I likethat you used a bov instead of the one on the super to reduce heat, I was thinking the same thing when I was kinda looking at parts to use. I am still curious if you came up with a way on your other project though to move the brake booster, or what ideas you have for that? I bet that thing is torquey as hell though, have fun.

Pocket

iTrader: (24)

Its still at the tuners, Im hoping for a good bit of torque because thats the fun part

Crank is stock, unpinned. I doubt itll show that much resistance, at redline these blowers only require 40hp to turn at 10psi

The LT1 has the same cyl head holes as the SBC. No, it doesnt have the handy ones above the exhaust flange to support the rear brace. For the twin car I put a sleeve on a stud from an exhaust bolt

Twin car has manual brakes currently. I modified the firewall (big mistake) to mount the master right onto the brake pedal assembly and moved the rod stud up the pedal 1.25" for a better mechanical advantage so the pedal would be usable. The endeavor is a failure as I can barely stop the car from a crawl. A new system, likely designed around a manual setup will be in the works before the car moves under its own power again

83 Crossfire TA

iTrader: (2)

You're going to want to put a smaller pulley on that, that one will only build a couple of lbs boost if that. The nice thing about the old school uncoated rotors is that they tolerate all sorts of abuse (overspinning...) better than the newer coated ones.

With some porting and other tweaking you can move pretty close to 500hp worth of air with one of those, though very few people have taken them even close to that far.

What "rebuild kit" are you guys talking about? What's in it? I've always just used the ford lube (which I don't remember smelling as bad as you guys say, I've got half a bottle sitting on my bench that I might go out and smell later) and replace the bearings in the end of the case piecemeal as needed, they run something like $4-6 at a local bearing supplier.

The biggest disadvantage with using the blowoff like you did vs a bypass like the OEM's do is part throttle mpg... the OEM setups only close the bypass at higher throttle positions, so most normal cruising the rotors are turning but not really doing anything (tested to take only a fraction of a HP, basically almost no cost in MPG), where using a blowoff will only open when the throttle suddenly closes when the engine is making boost, so it will cost you mpg on cruise. You might also find that the boost spike on throttle close will be more severe than with a turbo (a turbo can surge as air is forced to flow backwards through it, the eatons are a pump that will not flow backwards, it will move whatever air it's moving at the RPM that it's turning at, whether there is someplace for it to go or not, or somethign will break) and that you won't be able to keep the hoses on at the drag strip (but it won't be a problem abusing it on the street).

With a carb hat both sides of the FPR will see boost so it will be boost referenced.

Pocket

iTrader: (24)

I used the GM oil. Most of the ford guys recommended it over the cheaper ford stuff so I went with it. The kit consisted of the drive coupler, snout bearings, snout seal and oil. Pretty much everything except the rear bearings

Not what Id like to hear about the BOV setup. I tested it on an idling engine with the BOV in my hand and it opened and stayed open all through the idle span. I had to goose the throttle pretty hard to get it to close. I didnt test it under load or boost, so it may be completely different than I predicted

New2Chevy

iTrader: (11)

We're all eagerly awaiting some numbers

itsMikey

bvahnee

iTrader: (2)

subscribed. this is awesome!

83 Crossfire TA

iTrader: (2)

Well, if that's what it did it sounds good... I won't argue with it if it works (I won't tell it that it shouldn't if you don't )

Pocket

iTrader: (24)

Well, the car's coming home, but not in a good way. It turns out the BOV just cant vent enough air even at idle. Im going to have to use a larger unit, but for the cost Im going with the vortec SC bypass

MAF needs to move too, "Suction side" as the tuner called. Prob is I must run a recirculating bypass system for that (or SD)

He also said that IATs went to nearly 200* very quickly and would only go higher over time so.....

Time to mod the crap out of it before I take it back. To do list:

FMIC and 3" ducting
cam
headers
gears

Should keep me busy for a while

BlueZee28

iTrader: (30)

Yea right, you'll have all that done in one weekend. I'm such a procrastinator, I haven't even finished putting the steering column or my new pedals in the car yet.

ericjon262

you could try header wrap on the manifolds and charge pipe, that might get your IAT's down without the FMIC.

B4Ctom1

Pocket, I made this thread just for guys like you:
https://www.thirdgen.org/forums/powe...nt-answer.html

you will see the car in the pics has a Procharger FMIC made to fit a car with AC, but I was measuring it for a traditional front mount.

88 350 tpi formula

iTrader: (9)

go to a vw dealer for the valve i think its fits the tdi .... when i did my kit years ago it was like 20 bux same valve and any partsguy worth a crap will know with out the part number. just show them a picture

Pocket

iTrader: (24)

This is what I had in mind

https://www.thirdgen.org/forums/post...81-post23.html

A single coolant fan may not be enough though

B4Ctom1

If you switch to dual fans or not, either wire the fans to come on with the key, or use the ECM to do it as the engine barely begins to warm.

Procharger uses this method in their instructions. This ensures that later even at times when car speeds are low there is still some cooling airflow over the IC.

I believe it also helps to prevent warmed air from the radiator from wafting over the IC.

Shift06

I havent even finished my swap yet