Need some clarification

[earleys94gt]

I've got a 94 gt, 137,000 miles, AODE, mods in sig....

Can you safely run cylinder heads with 2.02 intake/1.60 exhaust valves on a stock bottom end 5.0?

Do you/should you run 93 octane once you have done a H C I?

Will I have to buy new injectors if I do a H C I, or will the stock 19 lbs. be okay? If I need new injectors, not going to do forced induction, which ones would be good sufficant for the setup? What other mods, tranny, rear end etc., should be done to ensure longevity?

I am almost 100% sold on getting a bottom re-build kit from Federal Mogul. The kit is about $420, and includes pistons(forged), rings, mains, gaskets etc.
I want to do a H C I, but not sure which one to go with. I guess it is between Trick Flow's top end kit, and Holley's SysteMax top end kit...

I know the 94-95 GT's have idle problems when a cam is installed with higher inch lift than stock. I have also seen guys with stock cams make some pretty good numbers, but they don't get the "cam" sound from the exhaust.

Any help, input, suggestions are welcome and THANK YOU in advance.

 

[final5-0]

I've got a 94 gt, 137,000 miles, AODE, mods in sig....

Can you safely run cylinder heads with 2.02 intake/1.60 exhaust valves on a stock bottom end 5.0?

Do you/should you run 93 octane once you have done a H C I?

The TFS heads have the big valves and will work with your stock short block.

I know we are talking about a street combo ... so ... why is your focus on the big valves. They do narrow down your options a good bit and IMHO, the smaller valves don't give up enough to be all that concerned about.

Your need of mid or top grade gas when you go to the pump will depend on the amount of compression you decide to run.

Bottom line here is more squeeze is more power.

Will I have to buy new injectors if I do a H C I, or will the stock 19 lbs. be okay? If I need new injectors, not going to do forced induction, which ones would be good sufficant for the setup?

Do I need more fuel ???

Think along the lines of how Federal Experss thinks

ABSOLUTELY POSITIVELY

After all ......
You now got more airflow ... hopefully way way more
Gotta have enough fuel to go along with that additional air flow

I'd do a 255lph intank pump and at least 24lb inj's
I'd move up to 30's if you know you're gonna custom tune

My main objective for a fuel system is ......

It needs to have a bit of reserve for safety sake.
Too lean is not anything to fool around with, it can do damage

What other mods, tranny, rear end etc., should be done to ensure longevity?

The rear end is pretty strong when talking about street applications.
If you have thoughts about drag racing and real slicks ... your gonna have to open up your wallet in this area.

I can't help you with the trans as I have no knowledge with AODE.

I am almost 100% sold on getting a bottom re-build kit from Federal Mogul. The kit is about $420, and includes pistons(forged), rings, mains, gaskets etc.
I want to do a H C I, but not sure which one to go with. I guess it is between Trick Flow's top end kit, and Holley's SysteMax top end kit...

Your choice of how to get a fresh short block could be influenced by how much wear you find in the holes. If you gotta bore and buy new pistons, I would check into the price of a pro built short block. When going with this option, you have a b & b sb that will safely turn more rpm and that will open up way more options for your combo. Just a thought here.

The h/c/i kits have become quite popular lately.

Several on this site have done the TFS kit thing and have made good power with it. Some have had praise and some have had a gripe or two. Those are just some of the things I've seen about that kit and a search on your part will turn up those very same threads I'm sure.

Don't know if I have seen anything on the holley kit
Then again, Killercanary's dad may have used that kit, but I'm not sure about that.

Others have had success with puting together their own combo with stuff like
Edel/AFR heads, TFS/Edel intakes, off shelf/custom cams.

I know the 94-95 GT's have idle problems when a cam is installed with higher inch lift than stock. I have also seen guys with stock cams make some pretty good numbers, but they don't get the "cam" sound from the exhaust.

Any help, input, suggestions are welcome and THANK YOU in advance.

I'm just gonna make this easy for you

You want the lope at idle..................
You want stock like drivability............
You want max wot power..................

YOU NEED A TUNE
so
BUDGET IN THE MONEY ......
JUST AS YOU WOULD ANY OTHER PART OF YOUR COMBO

One last thought here based on my experience

If you let drivability dictate your combo part choices
That basically means you are gonna try to get by without a tune

This kind of thinking will leave power on the table
and
I am 100% sure of that statement

Grady

 

[MysticKeith50]

....wow that pretty much says it all.

 

[95snoozer]

2.02s with trick flows,

AFRs flow great with 1.90s as do edelbrocks

you shoudl be more concerened with porting the lower intake of whatever you run to even flow as much as the head flows then looking to a 2.02 for more flow.

You are going to be limited by the intake.

yes if you have any respectable combo at all, 24 pound injectors

yes run premium to go along with the neccessary timing to make good power

put it on a dyno and get the a/f near 13.0

from the way it sounds you want or need to cut corners... in that case, you probably will never have a successful combination.