Cleaned up the other head today and then installed it. I also got the pushrods and rocks on and adjusted as well as the front accessories and blower. Tomorrow I'll get spark plugs installed (should have done that before bolting the heads on), then the lower intake and valve covers and then drop the distributor in and run the wires. That's if I can finish it all before dark. Then I'll finish everything else up on Saturday and hopefully have it running.

The only two pictures from today.

Felpro MLS NASCAR head gaskets.


How it sits now.

Jelly

Almost there.

Those HGs look for serious.

These are what I was running on the 302 before, I just didn't want to spend $90 each on them when I built this engine. I was hoping the Mr Gasket MLS gaskets at $35 each would work. But decided to spend it now.

She running again! It's so much nicer driving the car without the smell of burning oil. Now I just need to charge the A/C and then have the tune finished. I'm going to see if Steve has an appointment for this week.

I have my appointment with Steve scheduled for next Tuesday the 9th at 9am!

Sweet! :thumbs_up:

Dyno tuning is done but the car isn't. It's good and bad when Steve tells you that you are making too much power! :rolling: To be more specific, he said that I'm making too much for not having an intercooler. He told me that I need to install methanol injection because the inlet temps are way too high for the power the engine is making and he's worried that it will pop a head gasket if I beat on it which we all know I'm going to.

So, what's it making? Let me start by saying that we again had trouble with it spinning the tires in 4th. When the car was cool it put down 476 rwhp and 470 rwtq but that was with the tires spinning. That was on the pump gas tune. In an attempt to keep the tires from spinninig Steve would go full throttle in 3rd to heat the tires up but then the IATs would rise so on the pull the horsepower would drop. After that Steve made the pulls in 5th but again the IATs were so hot that the car was making less power even though it made more torque. On the final pump gas pull it put down 467 rwhp and 490 rwtq. This was with a total of 15 degrees of timing. It was actually the last pass that he made for the session which was after he finished the race fuel tune.

For the race fuel tune I added 5 gallons of race fuel. Total timing ended up at 20 degrees on the race fuel tune but again because of the IAT the race fuel tune didn't pick up that much over the pump gas tune. The final pull on the race fuel was 494 rwhp and 504 rwtq.

Here's a printout of the last two pulls which are the fianl race fuel pull followed by the pump gas pull.



Video of a couple of the pulls.

Very nice!

Meth injection will help you get more octane as well. Im debating meth or air to air intercooler. What were your IATs?

Steve didn't say. I'd love to have a liquid to air aftercooler but there just isn't enough room for one so I'll be using a 50/50 mix of water and methanol.

Do you have an idea of what system you will be going with?

I want to get the AEM Boost Safe injection system and I plan on installing the injector nozzle on the outlet of the volute of the supercharger. My Vortech has a predrilled and tapped hole already there that I can use for it.

That's what it's meant for.

Nice, that should make it easier to install when I finally get it.

First great to see your car together and putting down those great numbers. Second, I thought vortech made a air to water intercooler for sn95s? Regardless water meth injection is going to add a lot more power. I predict 580 hp

I like the AEM meth kit, that might very well be the kit I go with. Tons of cool features.

Thanks. Vortech makes an aftercooler for the Fox body but the SN95. At least not for the 94/95 5.0 ones. I won't be making any more power with the meth because I'm not changing the tune. I'm going to run the smallest jet size which Steve said would be perfect with the current tune to keep the IAT under control. I'm not looking to make any more, just to keep it together for as long as I can.

I have it on my car, but he'd have to convert everything specific to the SN back to fox stuff and would lose a bunch of stuff.

You also have more room in your engine bay than I do and that aftercooler is tight in your car. I'm not sure I could make it fit. But I'm fine with running methanol. Besides, with methanol I might not need to buy race fuel to run it on a road course which would be nice.

Can you fit a front mount intercooler?

I could fit the intercooler but not the tubing.

The 90 elbow on the discharge of the blower makes it hard. I would stick With the meth injection. It works and keeps it simple. At least you won't have to worry about blowing off intercooler hoses.

Nah engine bays are identical,, I've installed them on SN cars, ton of work if you want to keep you cruise control and smog stuff, and I mean a ton of work so much so that most people dump it. Remember my cobra had the fox stuff on it but I lost the cruise control.

Not with a vortech kit and even the renegade pro charger kit requires some serious hacking to fit.

Yeah, looking at that pic, there isn't room for anything else. At least the nipple on the discharge makes it a great place to inject meth. Nice smooth injection direction. I don't really like injecting 90 degrees into a pipe, yours will inject in the exact direction as the air flow.

I had a procharger P1 SC on my 1996 gt. the intercooler was huge and required very little effort to fit. The only real problem I see is the elbow on the blower dis discharge.

Completely different kits with wildly different installs
OHC

OHV

I knew that I could use the fox TB to install one and that I would lose my cruise control but I don't want to do that. I drive this car to northern CA and AZ to customers and really don't want to lose the cruise control. I'll be using methanol.

Speaking of long trips, back a few years ago we had a thread about MPG on boosted engines related to vacuum. I did some mileage tests in the Cobra and found that with the old engine combo that I got the best MPG at 60 mph which was 28 something. Yesterday when I left for your shop I filled the Cobra up near my house and reset the trip odometer. When I got home I filled up again to see what kind of mileage I got. I drove 70 the whole way to the shop and mostly 70 on the way home except where I ran into a little traffic that slowed to 60 for a couple miles. I was amazed to see that I pulled 30.235 MPG. I knew it was getting better mileage but I didn't expect that. Before I would get about 23 MPG at 70.

Is it possible that the stations fuel pump might be the reason I think it's averaged so much? The reason I ask is that when I filled up the first time I used a different station than I did when I the second time. The way I filled up the first time was I set the handle to pump at the slowest rate and let it click off by itself. I did the same thing the second time but it clicked off after just .6 gallons. I knew that wasn't correct because I had driven 52 miles. So I started the pump again but it clicked off right away. So the third time I held the handle by hand as slow as I could go and it clicked off at 1.72 gallons. Is it possible that the pumps at the second station are just more sensitive to the overflow?

I have a hard time understanding how what you've done would increase mpg 30% @70mph.

Not sure if you had the T56 or not but that's a big part. Your new chip allows for much better tuning capability. Longer stroke helps alot too, along with the porting of everything, new cam with the 114 LSA and increased cylinder pressure. Makes sense.

Where were you when I was arguing mpg with Sean Plunk years ago? Mpg relates to vacuum, simple.

Ya something is off, youre not getting 30mpg with a blown V8.

When I fill up my moms SRT, sometimes the handle clicks off before its full. It depends on the angle and temp when the fill tube will touch fuel.

You mean this one? http://www.motorgen.com/forum/showthread.php?t=522

See page 7.

I drove the same 52 miles today but this time I was in stop and go traffic on the 26 mile return. I also had 4 full throttle blasts up to about 80 moving into traffic and the gas gauge moved a lot more today. I didn't fill up the tank to check it but I'm going to North Hollywood tomorrow so maybe I'll fill up after that and see what kind of millage I get in normal driving. The real test will be at the end of next month when I have to drive up to San Francisco. Then I'll have some good long miles to compare with. On that trip I normally get about 22-23 miles per gallon.

The new LT1 gets about 30mpg on the freeway in the new C7 (using the EPA's current test circuits). It's lighter,has better aero, is direct injection, naturally aspirated, and shuts off half the damn engine at freeway cruise. I have heard of some guy getting up around 30mpg in stock C5s with a T56 and idealized driving/engine conditions.

If you want a solid idea, do a few phoenix loops and use a clock for trip average speed. With longer trips and if you're meticulous about where and how you fuel, the margin of error should be pretty small. Deep into the the 20s doesn't surprise me but I'm skeptical about 30.

Last trip to Vegas I got 26 mpg doing 80 all the way. And that in a car that is 3,850 pounds. I can get about 29 if i keep it around 60.

I had to drive up to San Rafael this week for business. The 30 mpg must have been something with the pump not filling the tank all the way or something because I average 22.501 mpg driving between 75-77. That's still better than it got before by about .5 mpg. It's not huge but at least I'm getting better mpg while making more power.

I got about 26 in the vette with the old motor between SD and Phoenix at 90 mph. I would get 28 if I slowed to 60 mph.

That's pretty fantastic. I've been daily driving the Vette these past few weeks, and with my 6th gear my freeway mileage is relatively incredible. It has to be at least double my city mileage. The motor is sitting at about 1,500 rpm on the freeway, but my cam is way too big to shift down low like that. So in the city I need to rev it up to about 2,500.

Well the Cobra failed it's smog test but just barely. I have a Magnaflow 2 cat H-pipe and I tested the cats after. The outlet is only about 100 degrees hotter than the inlet so it needs cats. I checked with a local exhaust shop about just adding the front cats to make it a 4 cat H-pipe like stock but they wanted about $400. I looked online and I can get a new Magnaflow 4 cat H-pipe for a little over $500. I've been waiting for Autozone to have a discount which finally they have a 20% discount code so I order it from them and saved about $130 with the free shipping. Hopefully this will make it pass.