I am thinking of making some upgrades this coming winter.

Right now I am running the ZZ9 cam with ported 113 heads.
This combo is running real strong and consistant.

Best ET is 11.32 in the Fall\Spring weather.

At this point, I am going to keep the stock bottom end and make a Cam or Heads change. I do all the labor so I would just need the parts.

Any input or opinions ?

Thanks

Vic

 

Whats the goal?

 

FINALLY!!! Someone asks the right question before spewing manufacturer names and part number specs.

Thanks Vader. It's refreshing.

 

WOW, ported 113's and a ZZ9 cam which is really quite small, and run deep 11's. That runs real well already. I think to pick a good cam, you need to know at what lift you get max flow. I have no idea where and how much flow you can get out of ported 113's. But yours seem to be working well.

Edit: I didn't see the possible head change. That opens up all sorts of doors.

 

I'd like to pick up some more ET. Maybe 3-4 tenths.

Car is 75% track, 25% street. I don't have to worry about passing an emissions test.

Looking for some proven combo's with a 350.

Vic

 

What is the rest of the build? Exhaust? Rockers? Valvetrain?

 

How much rwhp do you have now?

I have a 230/230 .6 lift w 1.6rr 106lsa in my 350, runs fine, all street at this point.

 

Damn Vic, I'm gonna need to go bigger cubes to keep even with you, again

Guys reading this thread - Vic's numbers are not a 1 time deal, the car runs the number, it is the epitome of optimized performance.

And his car out 60's me by a tenth every time

Vic, looks like we're gonna have another player in the 11.50 class

 

Vic, you're already running about as well as a 350 with hyd cam will.... I know Corkvette is into the 10's with his 355 with a big converter and solid roller..... so not sure how much farther you can go with yours.... perhaps another tenth or two with better cylinder heads and a cam in the 230 range....but not sure.

Who's converter do you have now ? What is its rated stall ? Do you know what rpm it flashes too ?
Also what gear are you running ? What was your incrementals on your best pass ? What do you run in summer air ? What rpm do you shift at ?

I am interested in modeling your set-up in a program I have is why the 50 questions.... it can give me an idea on a few things on your set-up sometimes.

 

Todd,

The convertor is a PI Vigilanti 9.5" lock up convertor. It stalls right at 4000 rpms. 3.73 gears out back in the Dana 44.

I shift 1-2 and 2-3 is at 6K. In the summer, I run 11.6x.

I will look for the ticket for the incremental numbers.

Corky is a full 1/2 second quicker than me. We ran a few times againist each other last year.

Vic

 

he's also a single plane and solid roller(?)

 

My sim kicks out you probably ran along the line of:

1.52 60 ft
7.17 1/8 et
94.2 mph
11.32 et
119.08 mph

I had this in very good air, but not great air (-300 ft DA) The numbers below will change based upon the actual air you ran your et in.

If I drop the air to a hot july day of 88 degrees, 30 bar, 90% humidity, your et drops back to 11.65 @ 115.6 with a high 1.5x 60ft....

It also thinks you have 420 HP - 430 ftlbs of torque....... which is pretty kick-butt for that ZZ9 cam I think you have.... or was it a 219, I don't remember.... regardless, thats flying. You are truly optimizing the power you have. That converter is the key, if I put in a 2600-2800 rpm converter, you literally slow down almost 4 tenths.

I won't vouch for the accuracy of the sim though, you never know, but it does have my old set-up down pretty good.

Anyway, the only point to this, is to try to figure out how much HP you're making.... then based upon the countless other set-ups around the internet and in the pubs, you can bench race yourself to a new et..... I've seen other 355 sbc with a more agressive hyd roller cam & better cylinder heads such as AFR 190's.... I "guestimate" you can make 475 HP and 460 ftlbs with your set-up...... a 383 would be 30 hp & 40 ftlbs higher. I won't tell you what the sim predicted with 475 HP.... but I will say this is enough additional power for you to tickle the 10's in good air....

With a 350 based motor running a hyd roller cam, that would be one of the best running, no maintenance set-ups I have seen in quite a while.....

btw, to the others, I'm not sure who ported his D-ports, but I know LPE was getting somewhere around 260/190 out of them 10 years ago... not bad for a stock casting !!

Good luck with whatever you decide to do Vic !

 

That SIM is dead on !

Here is my 11.32 run: (DA about -500)
1.52 60 ft
4.60 330'
7.19 1/8 et
96.06 mph
11.32 ET
119.96 mph

This run is from last Sat: (DA about +2400)
1.59 60 ft
4.71 330'
7.40 1/8 et
91.09 mph
11.67 ET
115.94 mph


So what Cam and Heads should I put on there ?

Vic

 

Afr eliminator 195cc or a ported 180cc head. What do you have to work with for piston to valve clearance?

 

Corkvette is using the 242/242 TPIS solid roller on his 355 isn't he?

 

Thats a great 1/8th mph in that 1st pass ! Typically at the power range, you'll pick-up about 24.75-25.00 mph in the 2nd half of the track..... might be your converter efficiency thats holding your mph back 1/2-1 mph, don't know.

On which cam and heads to run... I personally do not know on a 350 MR motor, I've never really studied them... others may have a better idea, I will say, your current cylinder heads might be good enough to go farther.... I think they flow roughly what the older version of out of box AFR 190's did, or close to them anyway, thus, a cylinder head upgrade might only net you a tenth or maybe even nothing, but that is dependant on who ported your D-ports and how well of a job they did.... but I think a new cam profile would help you, but to maintain your 60's and improve them based upon your new power, you might have to loosen up your converter another couple hundred to see it.

If I was you, considering an MR creates a torque curve similar to an LT-1, I'd pay attention to the cam specs of any of them running a big mph naturally aspirated...... you should be able to duplicate or at least be close with a similar cam. Once you have the mph, match your 60's to the power you have and you'll continue to run amazing et's.....

good luck !

 

whats the race weight?

i'm guessing somewhere in the 2800-2900 lb range? thats moving out for a ported 113/ZZ9 cam combo...i mean realllly moving out

what i'd do is get larger heads for sure and keep compression up around 11 to 1 if not more, whatever your at now seems to be working so keep it going.

for heads i'd run something with a 190-200 cc intake and somethign that flows over 270cfm. First thing out the box that comes to mind that does work well is new AFR 195's but any good aftermarket head with a good port job will flow over 270cfm. The more you get the better

Get a cam that will allow you to reach peak flow numbers. run enough lift. For AFR's i like to see .600"

your car is doing GREAT with that small 212/226 ZZ9 cam. So keep the duration small on the new cam but bump it up alittle. I'd say something like a 224-230 with near .600 lift with 1.6 rockers and tighten up the LSA around 108.

THAT should rock in that car. You could step up to a 230's cam and it will want to rev to well over 6500. If you have 195cc+ heads that can flow, you'll make great power up top end. Gear it to match and that car will do 10's.

You already have a 4K stall converter so use it by getting more duration to raise that torque power band. ZZ9 will not make peak torque that high over 4k rpms. So 4K may be too much stall for that setup as is but its working so leave it alone. Abit more cam will help that launch i'm sure when you get that torque band moved up alittle higher in the rpm range

You have 3.73's so that will help get those rpms up at the end of the run at the traps but depends on what tire your running. with a 26" tire a bit bigger cam will rock out since you'll cross that line very close to peak hp rpm
Now i have a 230/245 cam ona 109 lsa on my AFR 195 383 and i am peaking at 6300 rpms with it. on a 350 it will probly peak nearer to 6600. its a stout cam but streetable. In a 350 it will be a bit rough but since your 75% race, thats fine enough

 

i have never heard of anyone with your combo going that fast. if anything you need to teach US something.

 

Vic, if your launch weight is still 3,280lbs that 119.96 trap speed computes to 442chp or ~367 at the wheels...

Looking at trap speed and ET seems like you are getting the max from current power. So you will need to add 30-40chp or drop 300-400 lbs.

BTW, how much will the cage add; do you have any weight reduction on the agenda??

Best flow numbers I've seen on fully ported 186 heads are 245/190 at .600" lift; your ported 113 should flow better. Do you think that will be enough for close to 475-480chp??

Have you considerd a switch to force TCC lockup so you can up the shift points while maintaining current RPM at the shift points, at least for the 2-3 shift. Are you still in 3rd at the traps?

 

Race weight is approx 3270 lbs. This is a full interior car, not some gutted race car.

Thanks for the info you have provided. I do want to swap the Cam or Heads or both.

Vic