Fronzizzle

Sorry if this has been covered, but I've done some searching and can't quite find what i'm looking for...

I plan on going with one of the Holley kits for my new build (383 stroker, roughly 400 HP). I've been on the Summit Racing site, I want to make sure to buy the right system. I see that some are listed as just Stealth Ram and others are Avenger Stealth Ram - what is the difference?

I'm able to search by type of heads, ECM included, etc. but I still end up with 12-15 choices and I'm not sure what the relavant differences are. I don't automatically want to go for the cheapest (or most expensive), but I want to make sure to get the correct, complete kit. Thanks.

Twin_Turbo

iTrader: (25)

avenger is the holley EFI system that comes with it. The stealth ram by itself is just the intake.

vetteoz

iTrader: (13)

Depends what you have at present.
If you have a TPI car then all you need is the intake.
If you need a computer and wiring
still much cheaper to buy a factory TPI computer ( $50- $100 ) and a aftermarket harness ($300+ ) than the Holley kit

Fronzizzle

Sorry for being dense, I'm new to engine building...

My car is a TPI right now. If I get just the intake, my stock computer will work? What about injectors, fuel pump, etc.? I've read a ton of posts about the TPI not being good for higher-horsepower engines, I assumed that meant the entire TPI setup not just the intake. Again, I'm new at this and just don't know enough yet.

So...now I'm really confused. In going from my current 305 TPI engine to a new 383 stroker (400 HP +/-), what should I buy? Just an intake? Or will I need injectors, fuel pump, computer, etc.?

vetteoz

iTrader: (13)

With a custom tune your TPI computer ( you don't state what year, some are more preferable ) will work fine.
New injectors (30lb ? ) to support bigger Hp , upgrade fuel pump ( yours is probably tired anyway)

Intake is the restriction to all out power.

Fronzizzle

My car is a 1985.

Is a custom tune something easy to have done? Not sure I know anybody in my area (near Detroit, MI) that does that.

After getting the intake, fuel pump, injectors and possibly ECM, am I really saving much money by not buying the kit?

I also notice that some of the kits come with a fuel pressure regulator (would this be needed if I change pump and/or injectors?), MAP sensor, oxygen sensor, etc. Are all of these sensors things that would need to be changed, too, or are they being swapped out because of other components of the kit?

Thanks again for the advice.

vetteoz

iTrader: (13)

So you have the worst ECM ;
worthwhile upgrading to the 90 - 92 MAP TPI setup (cheapest )

Plenty of online tuners available.
Your combo is not what most would consider radical or hard to tune.

If you come anywhere close to the $3000 cost of the complete Holley system you are shopping in wrong place

HSR intake with fuel rails and adjustable reg $600
58mm TB (BBK) $330
Intank Fuel pump (Walbro 225) $100
MAP sensor (generic ) $25
O2 sensor (generic ) $25

Injectors $200+
http://fuelinjectorconnection.com/sh...&productId=178

'730 MAP ECM (used ) $50 -100 )
http://www.ebay.com/itm/1990-1992-CA...item336e589632

Standalone MAP harness $250
http://www.ebay.com/itm/TPI-Speed-De...item20c01e0ee2

Custom tune (PCMforless ) $200

If you look in the For Sale Dept you can often find intakes ( sometimes with extras ) for better pricing
https://www.thirdgen.org/forums/engi...h-ram-hsr.html
https://www.thirdgen.org/forums/engi...am-holley.html
https://www.thirdgen.org/forums/engi...eat-shape.html
https://www.thirdgen.org/forums/engi...ealth-ram.html

Be aware some of the parts in the Holley kit are there because it is intended for use on a car that doesn't have EFI.
You already have a TB you could start engine with and a O2 sensor,etc.
(although you should install a new O2 because yours is probably worn out )

Things like the pump and O2 sensor you could consider normal maintenance, replacement items not related to the intake swap

Fronzizzle

Wow. Thanks for all of the information - looks like I can accomplish what I want and save $1,200 in the process. Now I get to start my Christmas shopping!

A couple of more questions...

It looks like most of the Holley kits come with 36 lb. injectors. Would it be better to go with those or is that overkill compared to the 30 lb.?

And, I see links above for many of the items (thanks!), but for the other items - is Summit the best place to get most of those or is there someplace else I should be looking?

Fronzizzle

Sorry - another question. In looking for the intake, I'm having a hard time finding just the Stealth Ram Intake, everything is a kit. I see that they do have some EFI intakes that look like the TPI ones, I assume this is not want I want to look for?

http://www.summitracing.com/parts/HLY-300-111P/

Street Lethal

iTrader: (16)

http://www.summitracing.com/parts/WND-7540/

vetteoz

iTrader: (13)

And the HSR fuel rails with adj reg
http://www.summitracing.com/parts/HLY-534-186/

vetteoz

iTrader: (13)

Injector size varies according to expected Hp output
Better to wait until you have your combo finalized and then determine what size you need

KonArtist

iTrader: (1)

If your not in a hurry to upgrade keep an eye out on ebay. I decided to wait a couple weeks and looked for a used instead of new and found a few good deals.

I paid 600.00 for a complete stealth ram kit with everything but the 950 computer, came with all sensors, wiring, 2 sets of injectors, and the holley throttle body. I only needed the intake but figured i could resale the rest.

spray power

Do these intakes clear the stock hoods?

vetteoz

iTrader: (13)

https://www.thirdgen.org/forums/alte...gal-whats.html

Hawk92z-TDZ

Mine cleared, but I had to flip over the TB clamp cause it hit, I also have a tubular K-member so that might of made a difference too

Fronzizzle

Well, I placed a bunch of orders and received some of the parts already - getting anxious to do the install. I have a couple of questions:

1) When I bought the car back in July, it came with a stack of receipts. One of them was for a replacement fuel pump. I'd rather not replace this unless I have to. So my question is...how do I know if I have to? I don't think the replacement pump was anything special other than an OEM replacement. How do I know if it's strong enough? Can I just check the fuel pressure? If so, what range am I looking for?

2) Any advice on where & what kind of of MAP sensor to get? I found some generic GM ones on Ebay and at Summit, will any of these work or do I need to get something more specific?

Thanks in advance for any replies.

vetteoz

iTrader: (13)

So long as it looks like the stock one and has correct connector will be fine
You will need to find some place to mount it ; aim to have vac line to the intake as short as possible for best response