JP1738's Stocker and S/G car

[Danny Ashley]

I agree with MJ on the air cleaner element. You probably have the hood clearance to use a 4 inch especially with a dropped base such as the Speedway Motors # 91011062-2 . A lot of racers use this one without any element as it has shown ET improvement in many cases. And it's only $23. Remember that most elements are restrictive and will require a jetting adjustment for optimum performance. As a side note, I'm a wagon guy and love yours. Wishing you the best.

[JP1738]

Originally Posted by Danny Ashley

I agree with MJ on the air cleaner element. You probably have the hood clearance to use a 4 inch especially with a dropped base such as the Speedway Motors # 91011062-2 . A lot of racers use this one without any element as it has shown ET improvement in many cases. And it's only $23. Remember that most elements are restrictive and will require a jetting adjustment for optimum performance. As a side note, I'm a wagon guy and love yours. Wishing you the best.

Thanks man! Glad you like it! I have been running the car w/out the air cleaner, just leave it on for warming it up and driving around the pits, then I take it off to race/test. I'll look into getting one of those air cleaner bases ASAP!

[Doug Domm]

Originally Posted by Danny Ashley

I agree with MJ on the air cleaner element. You probably have the hood clearance to use a 4 inch especially with a dropped base such as the Speedway Motors # 91011062-2 . A lot of racers use this one without any element as it has shown ET improvement in many cases. And it's only $23. Remember that most elements are restrictive and will require a jetting adjustment for optimum performance. As a side note, I'm a wagon guy and love yours. Wishing you the best.

Is a spacer needed for that air cleaner on a quadrajet?

[Mark Yacavone]

Originally Posted by JP1738

I'll get a rebuild kit on the way! how do I delete the self-adjusters and still make everything else work?

There are still some brake hardware kits around with the manual adjusters, for the 9 1/2" x 2 GM brakes. You'll probably have to find an old parts store where the counterman even knows what you're talking about...or maybe dig around on Ebay.
I could tell you the dime rocket way I'd do it, but don't like telling someone what to do with their brakes. ;-)

[JP1738]

Got my shift point dialed in best I can!

The car started out with a #2 weight+orange spring and stock weight+green spring, which shifted at 6750 rpm.

Then tried to make a big swing to see where that put me, left the stock weight side alone and changed the #2 weight to a #1+purple spring (heaviest spring and weight) to see how much that would change the shift point. It made a huge difference and moved the shift down to 5500 rpm.

It seems counter intuitive but a stiffer spring quickens the shift point, I decided to leave the weight alone this time and go to the lightest spring. #1 weight+red spring. That got me right where I wanted to be at 6200 on the button. In the future I may try a slightly stiffer spring, maybe one step up to bring the shift in just a touch sooner, but I think that's good for now.

Final combo for any who might reference this later:
stock weight+green spring and #1 weight+red spring got me 6200rpm.

Sorry to all my neighbors who heard me making test passes at 11pm Tuesday while testing the shifts. Can only test it at WOT...
Also shoutout to the guy who saw me testing again Thursday who yelled "DO A BURNOUT" which I promptly did. I couldn't resist.

*All testing was done in a closed environment and all safety measures were taken (helmet and seatbelts utilized)

I'll include an image of the weight and spring chart for everyone's reference.

[JP1738]

It's been a very busy beginning to summer and I haven't updated my build thread in a while. Mainly because I haven't made many changes or broken anything in the last month thankfully. Since last updating I attended my first CCRA race at Rockingham dragway, entered a few more 6.00 Index races, and made my way to GALOT for the Sunday 1/8th mile national open for Stock and Super Gas. Haven't made much noise at all with the stocker in it's two appearances since I last posted, but not for lack of effort. An .036 r/t dead 9 pass at The Rock was not good enough to get out of first round and an .029 2 above lick did not get it done first round in stock at GALOT either. Pulling in the lanes rather poorly but I'm thrilled with my improvements at swapping feet and the car's consistency since I fixed the 1-2 auto shift.

My Mazda has been absolutely on fire this year, however. I've entered 5 6.0 index races this year and 1 SGAS race and made it to the finals in 5 out of 6 of them (and should've gone deeper in the 1 race I didn't make it to the final in, met the tree coming on 3rd round after letting go stellar all day up to that point). Wasn't able to capitalize on the car's hot streak at Charlotte national or GALOT though, .016 take .004 at charlotte no good, and .012 6.297 at GALOT did not make it by first round at either race.

Funny how you can remember the losing rounds with great detail but the winning ones not so much. Anyway, here's a few pics from the last month as I've stayed busy racing!




^Taken after a runner up finish at Piedmont dragway this past weekend at a 6.0 race paying 5k to win. Ended up splitting in the final 15 and 35 hundred^

[Bill Bogues]

Have you ever compared aluminum and cast iron intakes on your stocker to see if there's any difference. Most everone I've talked to says Iron is faster but it's still hard to resist running something that's 20 lb's lighter on front end.

[JP1738]

Originally Posted by Bill Bogues

Have you ever compared aluminum and cast iron intakes on your stocker to see if there's any difference. Most everone I've talked to says Iron is faster but it's still hard to resist running something that's 20 lb's lighter on front end.

I haven't tried the cast iron intake manifold, but I'd like to. I run the weighted class for my car, N instead of M, so I don't really care about the weight. I can peel 20 pounds out of the weight box fairly easily.

[Larry Hill]

Please don?t forget to tried and true Stk/SS test parameters:
Buy it, Try it, and then Put it on the shelf.
Good luck

[Terry Drinkwater]

Does anybody have more fun than this guy?? Love your thread DP!!