I know, it's asked all the time but I'm a little curious. What stall speed should I get with this combo as I still have the stocker?

 

i think u would want more gear...possibly 3.73's to best match that combo


that seems to be a good combination, alot of ppl doing it. with those good heads and 355 HR with that cam, with good tune, i can see it making 350whp fairly easily, possibly a shade more.. thats usually good for lower 12's with good hook. 12.3-12.4's wouldnt be too shabby. mph should be 112-113 or so.

as far a stall? i'd go 3200 or so, especially if you want to street drive it alot. 3400-3600 would be as high as i'd go and would be best for maximum 1/4 mile stats with slightly deeper gears like 3.42 or 3.73

 

3600 stall and 3.73s or 4.10s with 28" slicks would be optimal

 

I think there is a ton of potential in that motor. With a good tune you should be at least at around the 12.0/114 mark +/- dendending on the elevation, weight, etc. but you're going to need a good converter (go big! at least 3500 IMI) and sticky tires.

Good luck and report back how you did!

Trevor

 

Will that high of a stall be good for a somewhat daily driver? I won't be driving it everyday but as much as possible.
I'm excited about getting this motor in, the block will be dropped off Friday and my heads will be here Thursday. It sure will beat my previous 15.4 @88mph with my LB9.
3.73's are on the list but not for awhile as I have deleted my car budget with this build. I need to pick up the converter soon but gears will be in probably this winter.

 

if you get a good converter and keep the lockup style, then 3600 wouldnt be too bad for a daily driver. just geta trans cooler to be safe and those are pretty cheap.

when u get a tune or do tuning, just set the TCC lockup speeds lower so the converter locks earlier while under little throttle input. this will help keep the converter locked at low speeds to help keep the tranny cool and reduce wear. slow speeds up a hill with the converter open is kinda annoying...so make it lock earlier

 

What would happen with a 2,400 or a 2,800? It's my first motor with that much power and I've never picked a converter and don't know how it will act.

 

At the track it'll be lazy off the line with the lower stall (2800).

 

I'll only really see the track at get togethers and not looking for the absolute best time. I would just like a good compromize between the street and track, a little easier on the street though. How much of a time difference are we looking at between say a 2400-2800 and a 3200 at the track and how will they act on the street? Thanks.

 

As much as a few tenths.

 

yeah could be a few tenths, but i think a 3200 is a great compromise. 3600 would be best for strip ability but fine on the street for daily driving. recommend a tranny cooler tho if you do alot of hills in your area.

2800 works great for my stock L98... and would be somewhat lazy in your car but tonz better over stock. i'd use this if you really dont care for 1/4 mile and just want some better driveability on the street with just alittle bit of stall for some fun on the street as well. it woudl be primarily only a street car that needs to be tame and driven alot.

thats why i think a 3200 would be a great compromise. possibly even a 3400.

 

I'l probable shoot for a 3000-3200 then.

 

Just out of curiosity, What would it do with the stock converter? I know I'm not gonna use it but I was wondering what the stocker would feel like.

 

motor wouldn't want to idle or run at all with a stock 1200 rpm stall

 

Haha, didn't think so.

 

if it did idle good and had some low end to get thru that soggy spot before the cam kicks in, it would launch softly like a stock car and i'd expect only high 1.8 60 foots. with a good stall, it will be 1.6x 60 foots

with stock converter i can see low 13's to high 12's depending. a stall jump from 1200 stock to 3400-3600 is really a huge difference and you'll probly see half second drop. i seen about that with my car, from my estimates, and i didnt go up as high in stall speed. 1200ish to 2800 with a stock L98.

definately try to stay around 3200 or higher

 

wow...you sound like my combo
----------
i am VERY interested what you are going to be running i know i should use a higher stall but what can i say? im a cheapskate i got this stall converter as a deal....

 

The engine should be in the next few weeks and after break in I will get it broken in and get to the track and see how it does and post up. We're having a Norcal vs. Socal June 2nd so I need to have it tuned and reay by then.

 

For reference:
With a 2800 converter and 3.73s my best was a 1.75 & 12.10 @ 114
With a 3500 converter and 3.73s my best was a 1.71 & 11.99 @ 114
With a 4200 converter and 3.73s my best was a 1.63 & 11.72 @ 115
With a 4200 converter and 3.08s my best was a 1.71 & 11.92 @ 114

These times are not corrected. The differences are bigger corrected for DA.

 

I'm going to try to get a 3200 vigilante in the next month or so. Hopefully soon though.

 

Good Choice! Precision makes great converters.There 3200 is prolly more a 3500 anyways lol.The steep first gear of your 700R4 will help your lack of gear.You'll definatley have you a low 12/high 11 sec car.Good luck.

 

it will help off the line but i think he will be on the low side of the rpms at the line. especially if using tires bigger than 26 inch. my friends 3.70 geared car crosses the line at like 5300rpms and 99mph... but theoretically that should be more like 105mph or so based on the calculators.

and by the way, thats a hell of a quick bolt on SS you got there.. one of the fastest times i've ever seen out of a SS

 

Yep i agree,was just saying he wont have a turd of the line with the 3.23s lol

Thanks! Yep its a good running sob.It went 12.30s@112 with just a lid and prostars.Gears,cutout,headers,ported tb it went the 11.96@117 .Damn ls1s lol.I'll have one in my car in the next few years.Its the wifes car BTW

 

haha those are great times man... my buddies auto car needed a MS3 cam to do 11.78 at 118

 

do you have that red z28 with the license plate that says 11secz28 something? i think i have seen you at richmond dragway and i talked to you once before.....awesome looking car if its urs!!

 

Yep it was probably me.Thanks.I'm at Richmond Dragway ALOT. My plates say 10SEC 91 now.I actually lived in Stafford for a couple of years..99-01 Gimme a shout if you see me out at the dragstrip this year.

 

i know ls1's are a whole different ball game but a buddy of mine went from a stock auto 02 WS6 and ran 13.35@103, to 12.56@107going from stock stall and 3.23's to 3600 stall and 3.73's, headers and 3" TD's got him to 12.24@109, on DR's mind you. hes going for a tune this week and could possibly dip into the 11's with just stall, gears and exhaust, also this car is 100% stock body/interior with no reduction (his only car)

 

i am planning to be there late april timeframe if you see a white 89 formula 350 with both headlights sticking up thats me....license plate GME OVA

 

What about this cam? I'm thinking of using it instead.
280XFI HR13
http://store.summitracing.com/partde...8&autoview=sku

 

Hehehehehe. Seeing as we may be lining up against each other I hate to give out advice. Anyways I think you are light on the injectors. I would go with SVO 30 pounders.

With my combo I'm running 80% duty cycle with my SVO 30 pounders at 6000+ rpm. Sounds like we should have a good race. No comment on the cam.

 

Haha, I just hope I can get this thing running by then. I may tow it down your way for a dyno tune 1st.

 

i think the 3200 converter was a good choice, the stock converter in my 1991 ford ranger stalls around 3000(behind 140hp). it'll be nice to drive around town.