lthrneck

iTrader: (2)

Still in the planning process here.

Goals:

Low 13 to high 12 sec car to be driven pretty much daily.
Figure I will need around 280-320 RWHP, depending on how hook.
Plan is to do it as cheap as possible.
I can buy a new set of E-tec 170's for about 820.00 or I can go with SDPC Upgraded Vortecs for about 800 including shipping.

Question:
Which would you go with?

Will be running hooker 2055
ASM Runners
SDPC intake
Not sure which cam yet.
Currently doing suspension and bolt ons.
Semper Fi
Lthrneck

APACHE JOHN

what about E-tec 200's ?

lthrneck

iTrader: (2)

Can't get them as cheap. I would think that the E-Tecs would be better investment but not sure if anyone has used them around here.

Dans87GTA

iTrader: (1)

Vortecs all the way i bet you and get more flow out of them. well unless the E-TEC's are alunium but that would be the thing that would change my mind i like good old GM better. Later Daniel

3rdgenZ

iTrader: (1)

well the Etec's are based off of the vortecs and they flow about 20% better plus there aluminium so you lose about 30lbs too. id say the Etec are by far the best chose.

here's your cam > http://store.summitracing.com/partde...8&autoview=sku <
here's another > http://store.summitracing.com/partde...8&autoview=sku <
get that cam with some comp cams springs P/N 981-16

89Nighthawk

I'd go with the E-Tec's, and I already have Vortec's.

lthrneck

iTrader: (2)

HAHA, 3rdGenZ is kinda like Bill Engvall...heeres yur cam.

Anyway,
Thanks for the reply, Yeh I like the thought of losing weight with the addition of power. You think staying around the .500 lift range i the ticket for the power level I want to pull. I am not going to build a 383, so was looking at the zz4 cam or the lt4 hot cam. Although I haven't done much research as of yet.

I know the most important part of building a motor is planning.
Semper Fi
Lthrneck

Dans87GTA

iTrader: (1)

The second cam he picked out is almost the same to mine expect i have just a tad more lift nothing that would make any difference. the 218/224 will work good the a TPI intake. Later Daniel

Dyno Don

iTrader: (7)

This is a better choice:
http://store.summitracing.com/partde...8&autoview=sku

It is designed for fuel injection (latest technology)

APACHE JOHN

I've been checking that out...is the lift stated for 1.5 or 1.6 ratio rockers?

Wadebryant

1.6 per spec

Guest

3rdgenZ

iTrader: (1)

just being direct.
out of those two i'd pick the LT4. btw your right on about keeping the lift around .5. those etecs will actually start losing velocity over .550.

Guest

Even if the lift is ~.570, the valve isnt at that lift for very long. Most of its time the lift is a lot less.

APACHE JOHN

Oh that's the kinda of a cam I hoped someone would make. (tons of lift mild duration/fast ramp) I'll just need better valve springs/machining. Which spring is recommended for the XFI 268?

Guest

Probably their new beehive springs would be best. I'm not going to venture out far enough to list a part number, I dont know the specs very well. Thats the downsides to a high lift/fast ramp cam, keeping the valvetrain in check and having enough clearance for that much movement. But... I think the payoff is worth it.

Tremo

Do they make the beehive springs for SBC? All I've seen advertized were for BBC.

lthrneck

iTrader: (2)

Not too resurrect this thread but how streetable is the 268 cam? That things looks huge. I want to stay a daily driver and it looks like I am going to be able to get the e-tec 200s for a nice price.

slohand

I have been reviewing a head test in Chevy High Performance. They tested several, but the ones that I was interested in were the Trick Flow 195cc,Edelbrock perfromer 170cc and the modded vortecs on my car now. They did the test on a 383.

You can probably find the issue but the high lites were

Trick flows cost $1025 hp 455 tq 496
Edlebrock $999 hp 452 tq 489
vortec $680 hp 430 tq 489

I don't know how the edleborck performers would compare to e-tecs.

Right now I am trying to see how much better a set of AFR 195cc heads will performe. if anyone has an idea please let me know.

hope this helps.

HD4mula

I have the XFI 268. Idles perfect at 750-800rpm and gives me 17Hg of vacum. I don't see any big difference from a stock setup. Gave me 304hp/366tq to the wheels with restrictive exhaust.

Dave Farr

Had the same head delima- elected to go RHS vortec 2.02/1.6, still iron though.

thirdgen88

I've got the XFI 268 cam and E-Tec 200 heads... The 26986 springs are what I'm using (beehive)... Awesome cam... Surprisingly tame operating characteristics for such a good performer... Idles great...

lthrneck

iTrader: (2)

thirdgen88,
Have you ran your car down the track or at a dyno? Is it a 383 or 355?
I am looking at Dybo Dons headers with dual cats and a 3" all the way back(already have this part)

1989GTATransAm

iTrader: (3)

I 2nd what the above posters are saying about the XFI268 cam. The street manners are very good. It is deffinately a daily driver cam. However when you put the pedal to the metal it wakes up so hold on.

jimlt4383

iTrader: (1)

tell me about the intake you are going to use, 350 or 383 , car weight , auto or manual trans , if auto what stall . and what rearend gear and how well do you wont it to idle be honest? if you are at 350 , stockish intake with vortec base the car will be faster with the e-tec 170 heads than with the 200s and dont go wild on the cam. the e-tec heads for 800$ , are they bare ? whit part number are they? where in south carolina are you ? i am near charlotte nc

lthrneck

iTrader: (2)

I plan on using the Scoggins Dickey Manifold/w EGR stuff as well.

As far as the engine...I am thinking 383 now after looking at some prices for short blocks through larrys perfromance.

Car weight not sure yet..she has every option available in 89 from what I can tell so I think she is on the heavy side. (fat bottom girls make the world go round)

I will be driving the car daily, so I will not be running a stall bigger that 2400 and I have 3:23 9 bolt in the rear.

The E-Tecs are fully assembled. Getting a nice discount price although I just found a complete new set of GMHP Vortecs for 400.00 so I may change plans here soon. (400.00 for new modded high lift springs, hard to walk away from)

Once again my ultimate goal will be low 13s to high 12s on motor alone.

I am in complete planning stages so nothing is off the table yet.

Kevin91Z

iTrader: (1)

Dyno Don had the Vortec heads and a ZZ9 camshaft. He went 13.01 @ 105. Then he changed to the Etec 200's. He went 12.80 @ 107 and we're still tuning it. Density altitude is about 3000' so take a few more tenths off that at a sea level track.
If you already have the Vortec intake the Etecs 200's are worth it, otherwise stick with a regular Edelbrock TPI intake and some Trick Flow heads with the XFI268 camshaft.