JeffP

Is the Scoggin Dickey L98 shortblock a good starting point? Its only like $1100 bucks, but needs a cam, lifters, pushrods, and heads. I already have a ZZ4 cam and stock TPI intake using the MAF system, however.

What are my options as far as cylinder heads go?

The theoretical budget is say, $3000. If I cant hit low 13s, what about a 13.6 or so? Please include all prices, like fuel injectors, etc. By the way, this would use a 2.73 limited slip rear.

Thanks in advance for your help. Lets hear your ideas! Nitrous is ok, but would require forged pistons.

What do ya got?

JeffP

Nitrous would really help out; A 100hp shot would take off easily a second....

Thanks again!

Slow88RS

Go with some trick flow heads, they are nice and proved an 83hp and 42 lbs/ft of torque on this one test from car craft. It was nice, heard good things from them, reliable and worth the $800. Im not sure if you will get 80hp from the heads just a dyno they ran on a 350 mildly built but it would definetly put you in the 13's with your short block, ur cam, and intake. I would port and polish the WHOLE intake before you pop that baby in. You sure you want to push it on the 2.73? You could lose a few tenths with some 3.73's or depending on high u want to go...4.10's. Hrmm, if its an automatic build the tranny up with a corvette servo and a shiftkit (B&M, TCI, Trans-Go). Um, a stall if its a auto, like a 2500 or 3000 stall. That will have her barking through all the gears and that stuff on a stock L98 with all OEM equipment will sure run low 14's to high 13's. hrmm, i never really looked at lifters and pushrods. But a nice intake like the stealth intake (not sure who makes it) i have heard good things from. Hrmm, long tube runners would be another option. ur gonna run a stock compression right? What is it, like 9.3 or something? Hrmm some underdrive pulleys, dual fans, chip. I wouldnt run NOS cause the risk of blowing the engine is to high if its street/strip unless forged is purchased. Oh definetly some SLP 1 3/4 headers w/full catback (new cat(s)) too. SLP headers and the aerochamber is a nice combo, but with the #'s you want to run i would definetly put on the 1 3/4 SS headers for some more upper rpm pull.

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90 Iroc LB9 5spd G92
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Dual Cats, 3.42 Borg Warner w/Posi, TPIS Airfoil, K&N, 160 Thermo, Mobil 1 Extreme Formula 0W-30 Synthetic Motor Oil, Home Made Ram Air, ACDelco Plugs, 8.8mm 300+ Accel "Race" Wires, Accel Cap And Rotor, Ported and Gasket Matched Plenum, TB Coolant Bypass
My 3rd Gen Web Page

JeffP

I was kind of leaning towards iron or aluminum L98 heads. The iron ones would definitley be cheaper. Mild port work with new seals and springs too.

I believe the Scoggin Dickey L98 shortblock gives a 9.1 cr with 64cc heads.

Where can I get cheap 22 or 24 lb injectors?
Any other info is appreciated.


EDIT: Are the iron heads even worth my troubles? I have heard that they are actually not that bad of a cylinder head..

[This message has been edited by JeffP (edited October 03, 2000).]

superiroc

TFW heads $900
Super ram $800
Base plate 350-450 depending on how good a deal you get
24#svo $220

This will get you high 12s@110mph with 2:77 gears i know my car did it. of course you need some other little things that can add up. Don't go wimpy on the exhaust get a 3.5 mufflex sytem and 1 3/4headers The trick flow heads are great i don't care what anyone says for bolt on they make more power than any other head except maybe AFR although maybe not even.

Ski89Z28

I'm trying to do the ame thing you are but I'm keeping the original motor.
So far I changed the cam with TPI ZZ9 (not the best ) but I didn't read up before I started. I also screwed up and got edelbrock heads (6085's). Live and learn. I also have , I think around 2000 - 2200, stall conveter, edelbrock TES headers, 1.5 RR, TPI pullies, Air Foil, ported plenum and dual exhaust with 2 cats and 2 mufflers.
The most important thing to get was the aftermarket intake and long tube runners( for low end torque) and I didn't!

Even so when I did race at the track for the very first time I did a 14.01@97mph. I didn't do and timing or more runs so I know I'm in the 13.9's! Not bad with a car which just turned 100,000 miles.
Then when I get the intake and LTR's I should be near mid 13's Then suspension work!
But I think you have a good starting point and go with the the stuff the other guys said NOT EDELBROCK $HIT!lol.
I'll get there but just my luck I got to do it twice!

Good Luck!

Hank Brote

Edelbrock is @#$%.....I can tell you mid 13's with 6085's ported base and large tube runners and a mild cam is easy....the 6085's will support this with ease.

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Hank
87'IROC Z28
Hanks 87 IROC

[This message has been edited by Hank Brote (edited October 04, 2000).]

Godti

Can you keep the stock TPI unit when you are trying to get 350-400 horsepower out of a 350, or would you wanna switch to a superram??

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Godti
'89 Trans Am (Red)
305 TBI 5spd

[This message has been edited by Godti (edited October 04, 2000).]

TRAXION

AFR190s
TPIS MiniRam
220º Cam
3000 Stall converter


There ya go ... but, now you're in the 12's ... with 11's very close depending on the rest of the equipment you choose ... all naturally aspirated.

Tim

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TRAXION's 1990 IROC-Z
Best Time = 12.587 @ 107.97mph (1.710 60ftr) on the long runner setup.
All Natural. No Force. No Drugs. Stock Bottom End. Stock Body Panels. Stock Wheels. No Weight Reduction.
Gunning for NA 11's with the MiniRam II and Hooker LT Headers.
-=ICON Motorsports=-
Moderator: PROM board at thirdgen.org

Godti

What are afr190s??

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Godti
'89 Trans Am (Red)
305 TBI 5spd

Kevin91Z

iTrader: (1)

http://www.socal-fbodies.org/members/kevinl2.html

There's my plan. Its at 285 HP and 380 TQ at the rear wheels right now. The big mods are L98 ported heads, TPIS base/runners, SLP headers, Flowmaster exhaust, suspension mods, and drag radials.
You'll want to change out your gears to at least 3.23's if you can. Those 2.73's will hurt your goal, badly.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

fast89

SKI89Z28: I don't know who told you that Edelbrock 6085's weren't good, but I have had nothing but awesome results with mine.

JeffP

I like Kevin91Z's setup the best, partly because I already have the cam and intake, and partly because it seems fairly cheap and easy to accomplish.

Any ideas on where to pick up a nice set of aliminum L98 vette heads? I hear Cruzin Performance sells GM 22lb'ers....Is this a good source for my fuel injectors? I currently have 19lb injectors

JeffP

Would a vigilante 2800 stall converter work in lieu of a gear swap?

[This message has been edited by JeffP (edited October 04, 2000).]

Sinful One RS

Hey there guys/gals,

So, you all are saying that the Edelbrock Performer RPM heads (64 cc's) are for crap? I'm planning on buying them and the RPM cam to build my motor and then put a TPI on it. However, is this one person's opinion or many? Plus, what is so bad about the combo? I thought it was supposed to work together? Please give details. I really don't want to buy something and find out that it's for crap for real and won't give me the numbers I'm shooting for.

Thanks much and see you all on the streets!

PS Yes, I'm shooting for their 425-450 HP combo they say is proven.

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Sinful One RS
91 Camaro RS w/305 TBI
3.23 posi w/disc brakes
145 speedo
Z-28 Fog Lights & grille
Sinful One RS's Domain

[This message has been edited by Sinful One RS (edited October 13, 2000).]

Ski89Z28

fast89, I'm sorry, I didn't mean to say that the Edelbrock are crap cause they are made very nice and ported well. However if you are looking for flow numbers Edlebrock have just about the lowest.
Edelbrock flow around 235 max.
AFR190's flow around 265 max.
TFW flow around 255 max.
Now Edelbrock claims that more isn't better since it could slow the velocity of the air flow to the chamber. Hence less atomization (spelling?) of the fuel. This is how they designed their heads, so I read.
I don't know but it seems more people here use AFR190's but is this with a carb or TPI system? And will Edelbrock 6085 heads support engines designed for 400hp or better or do you need heads with more air flow?
Just my .02! I didn't mean to upset anyone but I just read here more about people using the AFR190's and getting good times in the 1/4 mile than people with the Edelbrocks.
But I'm still keeping my 6085's and will see what happens when I get a aftermarket intake and runners.

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89 IROC 350 Auto
TRUE DUAL Exhaust
Edelbrock Performer Aluminum Heads
ZZ9 Cam
TPIS Level 5 Chip
14.01 @ 97.0mph with 2.77's gears

Kevin91Z

iTrader: (1)

Yes a higher stall converter will help.

Keep in mind the Scoggin Dickey $1200 350 is for 55-85 cars, which means its a two-piece rear main seal and non-roller cam. You'd be better off getting the roller block they offer, I believe its $1800. Check the SD board here, someone asked about it recently.

Greg90iroc

if you really dislike those heads that much i will buy them off you and you can get a set of AFR's or tfs heads. 650 bucks sound fair?

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90 iroc l98
last season best corected 13.62 @102
mods
full exhaust, AFPR, pulley, jet stage 1 chip, billet servo, 52mm throttle body and a few other little things.

89IROCZ

As far as the injectors go.... get the Mustang 24# injectors from Jeg's that fit right into the GM TPI cars. They are something like $200-250 for the set of 8, whereas the GM ones are at least double the price and do the exact same thing. Apparently, a lot of people on here are running those injectors and I have heard nothing but good things.

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1989 IROC-Z
350c.i. TPI
rebuilt 700R4 with shift kit
3'' Monza Pacesetter cat back exhaust (minus the muffler)[SOUNDS OF THIS ON MY WEBPAGE]
new dual cats
3.23 Posi rear
hypertech chip
under drive pulleys
adjustable fuel pressure regulator
K&N Air Filters
Excalibur alarm, keyless entry and remote start
new:
struts, shocks, bearings, distributor, cap, rotor, alternator, battery, regulator
245 ZR16 50 Tires, Rotors and brake pads all the way around

Go to my webpage to find out more about it.
You can also see pictures, and hear sounds as well.
http://go.to/iroc-z

AOL IMer: JRShotliff

Kevin91Z

iTrader: (1)

Well here's something bad about the Ford injectors. They're rated at 24 lbs at 39 PSI, while our Chevy injectors are rated at 22 lbs at 42 PSI. Since most of us use a fuel pressure regulator to crank up the pressure, those Ford injectors will flow way more fuel than you need, and you'll run rich. You can turn down the pressure to 39 PSI, but then the lose the benefits of having higher pressure. I'd only get the 24lbs if you know you're going to need them, like with a nitrous or supercharger engine, or if you can burn a custom prom with lower fuel values.

evilho7810

I'm running 24lb/hr injectors my car is almost all stock and i'm not running rich at all.