I wonder what guys are getting in the 1/4 in the NHRA stocker class with no NOS in there chevy???



Matt

 

I guess it is a loaded question. I am just considering some build options and I found this one exciting and wonder how it matches up to others in the stocker class.

"Another 13 second 350 !!!
I finally reached my goal of a 13 second time slip with my 350

I ran a 13.85 @ 98.1 mph at the Musclecar Shootout at Brainerd Intl Raceway this past weekend. The temp was in the upper 80s, so this wasn't a cool weather fluke!

The best part was having Jim Weise witness it and tell me, "that's a hell of a run for a 350 car." Thanks Jim!!!

The 350 is a '69 block bored .030 over with forged 10:1 pistons, stock rods/bolts, balanced assembly, mild porting on the stock '69 heads, stock '69 rocker assembly with TA valve springs, TA 290H-94 cam, stock intake manifold and quadrajet, stock points ignition, TA headers and a 2 1/2" exhaust with an X-pipe. An 8.5" posi rearend with airbags in the coils and 3.23 gears move the P215-70-14 radials. The car weighs 3740 with me (210 lbs) and a 1/2 tank of gas in it.

I did have some problems with wheel spin off the line, I usually had to pedal it once or twice to get the tires to hook. 60' times were from a 2.00 best with no spin to 2.3s. The 13.85 run had a 2.13 60', so it should run some better times if I can get it to hook consistently."


"Pistons are TRW, bought from a local speed shop. There are two different pistons, 8:1 and 10:1, so make sure you get the correct ones for your application. I think the 10:1s are TRW L2343.

There are also several other manufacturers that make forged pistons for the 350, the NHRA page lists VENOLIA 350, TRW L2343, SEALED POWER 2232P, NYLEN 971P, ROSS 68538 and SEALED POWER 340P as acceptable stock replacements. I'd guess all of these are 10:1 or better pistons.

Would it have gone faster with an aluminum intake? Maybe. If I had more porting work, converter, cam, and gear for sure it would. But with an aluminum intake I can't race in stock class!"

 

Are the rules really strict in that class, because a 13.8 @ 98 doesnt sound too impressive for a .030 over 350 with ported heads, and a cam? maybe I am missing something that will make it more impressive, but I guess if others think the time is good, good job, !

 

stock '69 heads
stock '69 rocker assembly
stock intake manifold and quadrajet
stock points ignition
The car weighs 3740
3.23 gears

Heads that flow like crap, stamped steal rocker arms, stock absolute crap intake, a carb that probably flows 500 cfm on a good day, stock ignition, borderline freeway gears in a car that weighs almost 3800 pounds and you are telling me that the times seem slow to you? I would say a 13.8 is a great time for that sort of setup.

 

http://www.nhra.com/tech_specs/class...ion/index.html


Each year motor has it own rules.

Ie a 68 350 with 9.0-1 can only have 230 hp but an 80 of equal build can only have 165hp.

 

What year car are planning to run? You can't drop a 1969 engine into a third gen and call it stock. The same year engine must be in the same year car although some cars are faked. A third gen is between 82 and 92. It doesn't take much to change a 92 into an 82 with a few body panels and interior pieces just to be able to use a 200C tranny and a factory fiberglass hood. Of course you would need to also use a 1982 based engine.

A "Stocker" has to be built to spec. You can't just pick and choose performance parts to use. Even simple things like pistons must be a specific casting or legal replacement. I do know that you can use an Edelbrock Performer carb as a legal replacement for the original Q-jet since you can't just grab any Q-jet to use. It must have a specific number on it to match the year of the car. The old carbs are getting hard to find. Even con rods must have specific castings and the old ones have upgrade versions that you are allowed to use.

Assuming you want to build a 1969 Camaro 350. We'll use the lowest version that year. The factory's lowest 350 was rated at 250hp. NHRA has it refactored to 230hp. This engine/car combination has a weight break of 13.59 which would put it into L/SA assuming you're using an automatic transmission. This car can weigh no less than 3105 with driver after a run and no more than 3218 or it gets bumped into the next slowest class. L/SA cars must run no slower than their factored index which for this car would be 13.00. To qualify they can't dial in slower than their factored index. This weekend's NHRA race, the quickest L/SA car is running 11.963. This is not a completely gutted race car but a purpose built Stock Eliminator car. You can just spend lots of money on performance parts and expect to have a stocker. Stockers are far from "stock" and could never be driven on the street.

There are a lot of things that have no limits to a stocker. They must use a tire no larger than 30 x 9 but gearing can be anything. Most run around 5.13 gears in a 12 bolt or 8.5" 10 bolt. Ford 9" isn't allowed in a GM car. The older cars run powerglides if the option was available in that year. If they have to use a 3 speed automatic they use the 200C tranny. Torque converters usually stall at 4500 rpm. A stocker camshaft is limited to .430 or OEM lift whichever is great. All other cam specs are wide open. A stocker camshaft usually won't idle below 2000 rpm.

You can't use an aluminum intake unless it is a factory version. No porting is allowed to the heads. No oversized valves are allowed. Stamped steel rockers must be used.

Rules are very strict for a stocker. Visit local tracks when Stock Eliminator cars are running and go through the pits to look at the cars. Most of them don't look like they should go as fast as they do.

 

This is kinda why Im askin. FOr the stocker class that 13.8 isnt bad at all. An why I wonder what others get in the stocker class but no NOS.

NOt sure what year I will go with to tell ya. Just wanted to hear some other stocker numbers.


Matt

 

I think what Stephen is saying is that you don't have a choice what year you go with, you're stuck with whatever was available for the model year of your car and that's it.

 

NOS is cheaper than building a stocker engine.

Depends on what class it's in. You've never said what the car is.

A 69 Impala with a 283 is considered fast at 15 seconds. Al Corda has a 2000 Firebird in A/FIA and runs low 10's with a 348 engine.

 

That is why I am asking.

I could go with any car. why I am asking people who already run in the stocker class, what times they get.

I want to see what people get in what cars???

I could go with anything from a 1-2-3rd gen Buick, olds, mopar, ****.


I just wanted to find some other guys that run in the stocker, find out there number and what they are driving. And then maybe pick their brain for more info.

What I find out from others who are doing stocker now, will determin what year and car man i go with.

Matt

 

You won't find anyone including myself here who can afford to run a stocker. You'll have better luck on http://www.superstockforum.com/

I personally don't think your 13.8 pass was in anything close to being a Stock Eliminator legal car so don't get your hopes up.

 

Welll it is a stocker car. I said it was a loaded question. The TA valve springs cam n header were enough of a clue but Jim Wise is only know for one thing, Buicks. That's a Buick 350 runnin them times.

Matt

 

Oh and thanks for the link.

Matt

 

Running a Stocker is really no more pricey than a typical bracket car. In reality my 400 bracket motor actually cost more to build than the 305. First outing with the 305 saw it go a 74 under 11.85 @ 111.80. This with a converter that's too tight and a motor we just slapped together. Cam was still being broken in when I drove to tech and the scales (each class has a minimum weight it must be and every car must pass a fuel check). The 400's conv is at ATI right now getting recurved and I'm hoping it will see 80 or 90 under at the Dutch Classic next month.
As for restrictions on what can be done to the motor, they are pretty restrictive. NHRA has spread sheets available for download on their website. The biggest key to running a stocker is attention to the total package.
Oh, and there is no legal replacement carb for the 305 as yet. This is where you can get in some trouble as not all 305 carbs are correct for the pass car motor. The truck carbs are too big in the venturi area.