Thread: Finishing My 383 Sbc Stroker,cam And Intake???

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Originally Posted by camaro_fever68

Well guys, I'm running these combos and have been for years. I know the Victor Jr is rated 3500-8000 but I will tell you it is one of the most versatile intakes ever made for the small block chevy. It'll dang near work on anything. I've run it on 283's to 406's.

Recently I changed from an RPM Air Gap to a Victor Jr on my 385cid. I lost a couple hundreths in 60ft but gained a couple MPH and my E.T. dropped. This is on a 6500 rpm engine.

I've tried the vacuum secondary carbs. They worked good for me with a tight stall. Once I started with higher stalls I found that on a dead hook they'll bog the engine. Stiffer springs kills the 60ft.

On the engine he's building, he'll never be satisfied with a vacuum secondary. If he had a tighter stall or a smaller engine, then maybe so.

His biggest problem with consistency is going to be traction. It took me a while to get my '77 Nova to pull consistent 1.46 60's.

The thing that concerned me was the weight of the car..... Is it going to be able to launch hard enough to use all that airflow?????? As I said, I'm certainly no chebbie expert, just didn't want to see him end up with a peaky engine that may or may not be able to hold it's consistency......

To be honest, it'll probably never use 750cfm's. Remember though, carbs are rated at 1.5" vacuum. You never want to actually see 1.5" of manifold vacuum at WOT for performance. I try to keep mine around 1" at redline.

The 3500 stall is why he wants/needs a double pumper. With the combo he's building, it will come out the hole pretty hard.

Yup, I see your point. Guess I was still launching with a stock converter!!!! On the rare occasions I ever ran a heavy car with an automatic it was primarily for street use. Must be the dinosaur in me, but I still like to sidestep the clutch at about 5500 and just start pullin' that handle!!!!!! Seems everything I enjoy is terribly expensive!!!!!

I love to side step a clutch myself but talk about inconsistent and that's on a good night when I didn't tear up anything.

I still got an old 4-speed under the table I'm going to throw in something light one day with a high strung small block

Originally Posted by camaro_fever68

I love to side step a clutch myself but talk about inconsistent and that's on a good night when I didn't tear up anything.

I still got an old 4-speed under the table I'm going to throw in something light one day with a high strung small block

Yup, way big fun!!!! I've got one good comp type (no sychros) old Doug Nash 5 speed with a Long V-Gate shifter...(and a couple boxes of spare parts). Everybody sez they're inconsistent, but the Pro Stock boys seem to do alright with them!!!! Should sell the old Doug Nash to Scooter for his sbc gasser and get me one of them Pro Stock trannies with the pull handle shifter.... Having the five gears vs 2 or 3 with an automatic just allows you to do so many other things with the engine, and keep it in it's peak power range all the way through the quarter.... I actually ran the thing one summer on the 1/8 mile with 6.50 gears in a Windsor powered light weight (2100 lb) Maverick!!!! Absolutely the most fun you can have with your clothes on!!!!!!

yes dave i think you should sell it to me also inconsitent? i dont think thats entierly true theres a guy out here has a light granted <1850 lbs> little ford p/u bascially a cab on a frame with a small woodbed, has a 302 ford in it single 4 t-ram. pops the clutch at 7200 pops 2 foot wheelies and will run within a 10'th of his times all day. watched him come out one day run 10.42 10.45 10.46 and a 10.43 not bad id say????

I was referring to myself as being inconsistent with a clutch. I never could get it perfect everytime. Some nights I guess the track was stickier than others. Sometimes I'd bog and other times I'd over power the tires/suspension. I don't think I ever made it to finals when I was running a stick. Sure was fun grabbing gears though

I got a friend putting a lenco in his LSX based camaro. Maybe I'll get to drive that!!

ywith a stick, its all about repition if you go up there and drop it at say 6grand and it launches perfect do the same thing again. same length of burnout same staging time dry hop <if you do those> same thing over n over n over again. course not many people these days know how to powershift, shifting without lifting off the gas

Originally Posted by camaro_fever68

I was referring to myself as being inconsistent with a clutch. I never could get it perfect everytime. Some nights I guess the track was stickier than others. Sometimes I'd bog and other times I'd over power the tires/suspension. I don't think I ever made it to finals when I was running a stick. Sure was fun grabbing gears though

I got a friend putting a lenco in his LSX based camaro. Maybe I'll get to drive that!!

I cheat and use a two step rev limiter.... Launch RPM is always the same. At my age the lights require all my attention, no time to look at a tach!!!!! Reading the track was critical, and making the appropriate adjustments to the 4 bar was the key to consistency. It took better then half the summer to get the setups all dialed in for weather and track temperature changes.... Sure never had to worry about getting bored between rounds!!!! Though I did have one of my most enjoyable ever summer of drag racing, got to admit I only had one win, two runner-ups, and the rest were mostly one round and out nights....... But given half a chance I'd do it all again in a heartbeat!!!!!

Have fun with the Lenco, heck buy your way into a couple passes if you have too!!!! They are a blast to run!!!!

Oh yeah, if you want to save on parts breakage with a stick, plunk down the big $$$$ and run the McLeod Soft Lock clutch....Love em!!!!!

or snatch a stock big block pressure plate with a good disc or vice versa good brand name pressure plate with a stock disc. lots of guys out here do this lets it slip enough without killing the drive train and hey, whats a 39 dollar disc once an awhile? ,,,,,,,,


so dave what are you wanting for your trans

The more I read it the more it bothers me that the crank is a stock cast piece.
He has great flowing heads and to take advantage of the heads you will have to turn it well over 6,000 rpm's.
This is where the cast crank would make me lose sleep at night.
Even the stock rods would bother me a little un-less someone has fully-preped them.

Originally Posted by erik erikson

The more I read it the more it bothers me that the crank is a stock cast piece.
He has great flowing heads and to take advantage of the heads you will have to turn it well over 6,000 rpm's.
This is where the cast crank would make me lose sleep at night.
Even the stock rods would bother me a little un-less someone has fully-preped them.

I wouldn't sweat the cast crank too much. I bounce mine off the 7000 rpm pill pretty often.

The 285 cam (if he uses that one) should make peak power around 5800-6000. That would put him shifting ~6300rpm. Put a 6800 rpm pill in the rev limiter and let 'er rip.

Originally Posted by camaro_fever68

I wouldn't sweat the cast crank too much. I bounce mine off the 7000 rpm pill pretty often.

The 285 cam (if he uses that one) should make peak power around 5800-6000. That would put him shifting ~6300rpm. Put a 6800 rpm pill in the rev limiter and let 'er rip.

It would still bother me.
Does this crank have 100,000+ miles on it or is it new??
Even a new "cast-steel" crank would be better.
I have seen people break stock cast cranks in the 1/8 mile only running 7.20s.
The other question is this a "full-on" bracket car?
Meaning does it have a 10 inch slick under it?? or is it running street tires?
The "shock-load" on the drag-strip is enough to scare me toward a 4340 crank.

I guess I'm assuming it's new. No one in there right mind would pay for a stock 400 crank to be turned down these days when you can buy a new Eagle or Scat cheaper.

I have run a stock 400 crank with stock 400 5.565 rods in a 383cid for quite some time. I shifted that engine at 6200rpm and ran 11.40's. I had 30X13.5 slicks.

Originally Posted by camaro_fever68

I guess I'm assuming it's new. No one in there right mind would pay for a stock 400 crank to be turned down these days when you can buy a new Eagle or Scat cheaper.

I have run a stock 400 crank with stock 400 5.565 rods in a 383cid for quite some time. I shifted that engine at 6200rpm and ran 11.40's. I had 30X13.5 slicks.

I would never assume anything.
We use to run all that "stocker -stuff" about 10 or more years ago.
It also looks like he has stock rods.
But why gamble???
A new cast-steel crank is only $175.
New 5140 con. rods with ARP bolts are only $150
If something breaks and comes up and smacks his brand new alu. heads he will be a very un-happy camper.
Sometimes you can lead a horse to water but you can't make him drink.