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Re: 400 Stroker Build Suggestions [Re: 68KillerBee] #2086844
06/06/16 06:15 AM
06/06/16 06:15 AM
Joined: Jan 2004
Posts: 6,445
Missouri
68KillerBee Offline OP
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68KillerBee  Offline OP
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Joined: Jan 2004
Posts: 6,445
Missouri
May not get much response in this thread, but I'll try it first anyway.
Break in went fine, got my linkage set up correctly on the 4 speed and put probably 100 miles on it. No problems to speak of until I went to take it to a cruise night. Heard a knock, and had a fuel leak at the pump. Fixed the leak but now I have to figure out the knock issue. It isn't really loud, sounds a little louder than an exhaust leak. Tomorrow I'll try to figure out where it's coming from. Hoping it's something simple, obviously. I had an issue with the bottom pulley bolt holes not lining up with the dampener, so going to make sure that isn't the issue as the whole pulley system looks a little "wobbly". Then I'll take off valve covers. I've read people say that moly disulfide from cam break in can sometimes cause a knock. After breakin, I changed filter and added back a quart of break in oil. So I was thinking maybe change over to my regular brad penn oil. When looking at dipstick, the oil has a very faint white-ish look to it.
Seems like I should just rip it apart- valve covers, intake, maybe oil pan if the first two things show nothing. Tough to decide with so many opinions on certain break in procedures, stories of comp cam issues, or comp cams saying you may hear the "dull sewing machine sound", etc. I don't want to drive it, thinking that's just how it should sound and then end up really messing it up. Sorry for the long post, just frustrated as it seemed to be doing just fine- even when I parked it last.

Re: 400 Stroker Build Suggestions [Re: 68KillerBee] #2184475
10/28/16 01:03 PM
10/28/16 01:03 PM
Joined: Jan 2004
Posts: 6,445
Missouri
68KillerBee Offline OP
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68KillerBee  Offline OP
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Posts: 6,445
Missouri
Issue was a bent pulley. Fixed it. Raced at the nationals with radial t/A's and it didn't get traction at all obviously. It still wasn't running right. Think I went 14.1.
Rebuilt the carb a few weeks ago and my problems went away for a couple hundred miles. Uncle came over and we messed with timing, dwell etc. also I went to 76's jets on my carb. Now at about third gear getting on it, it will start bucking really bad. So I'm running out of fuel, otherwise it pulls good. Going to take apart and clean carb today. Got 275/60 drag radials and racing tonight. Hopefully I get a good pass and don't run into the fuel problems. Over the winter I'm installing the FITech and going to put a new gas tank in it.
Devin

Re: 400 Stroker Build UPDATE [Re: 68KillerBee] #2196512
11/14/16 11:48 PM
11/14/16 11:48 PM
Joined: Jan 2004
Posts: 6,445
Missouri
68KillerBee Offline OP
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68KillerBee  Offline OP
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Joined: Jan 2004
Posts: 6,445
Missouri
Well went to racetrack and it launched hard but then bogged down through the rest of the gears. They messed up the time slips so I don't even know how it at least 60 ft went. Then I sat in the stands the rest of the night.

Decided to swap my dads carb on from his car after we found bent pushrods and valves hitting the pistons. Edelbrock 850. Ran good, then bad, then good. So I'm going to get a new fuel tank.

BUT, I did get in some encouraging runs finally. All night I spun bad off the line or if I would try to baby it and then lay into it, it would bog.
My cousin let someone in front of him so it lined my cousin and I up. Him in his firebird. I went into the beams and it rolled back out so I was inching it up and they turned it green on me. At the end of the track I was catching up but he went across the stripe first. on the return road i texted my other cousin and told him I barely lost. But then got the timeslip and I ran faster than him, just barely. It was my best et, but I had another pass with slightly better MPH of 104.43. It was in the 50's and dropping. So EFI is my next task and then work on launching next year. They don't prep very much for this event at all it was from 6pm-12am. I'm in the left lane below.
EDIT:(It shows up on my phone correctly, but is sideways on my computer for some reason)
R/t - .809
60' 2.119
330' 5.713
1/8 8.675
MPH 83.22
1000' 11.204
1/4 13.361
MPH 104.03

image.jpg
Last edited by 68KillerBee; 11/14/16 11:53 PM.
Re: 400 Stroker Build UPDATE [Re: 68KillerBee] #2196764
11/15/16 02:18 PM
11/15/16 02:18 PM
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
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fast68plymouth Offline
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fast68plymouth  Offline
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Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
I had to read back a bit to see what you ended up with for a combo.

You are obviously experiencing some "new combo blues".
One you get it sorted out it should go(at least) 8-10mph better.
ET's are much more dependant on how well you can get the car to leave.
"Street" cars with a std trans and mild gearing don't usually 60' nearly as well as a comparable auto, but mid-low 12's should be no problem.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: 400 Stroker Build UPDATE [Re: 68KillerBee] #2196858
11/15/16 05:08 PM
11/15/16 05:08 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
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Joined: Aug 2003
Posts: 43,007
Bend,OR USA
Maybe it is time for some track bias ply tires on different wheels for race use only work up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 400 Stroker Build UPDATE [Re: 68KillerBee] #2196902
11/15/16 06:29 PM
11/15/16 06:29 PM
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
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fast68plymouth Offline
I Live Here
fast68plymouth  Offline
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Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
I agree.
A set of 26x8 slicks would be pretty high on my list.

It's hard to get good data to sort the car out if half the runs are plagued with tire frying launches.
With the slicks you have a much better chance of making sure each trip down the track provides both better ET's and useful info.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: 400 Stroker Build UPDATE [Re: 68KillerBee] #2197235
11/16/16 05:00 AM
11/16/16 05:00 AM
Joined: Jan 2004
Posts: 6,445
Missouri
68KillerBee Offline OP
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68KillerBee  Offline OP
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Joined: Jan 2004
Posts: 6,445
Missouri
Thanks, I put on some 275 60 15 Nitto drag radials. But obviously that isn't going to help if I do too short or too long of a burnout, crappy track prep, crappy driver mod smile , etc. I know, my car is heading on the right path so I'm feeling better than a few months ago. More than anything I drive the car, but still want to have some fun at the track here and there. As long as the clutch holds, everything else should easily hold up to any power I currently have.
Just figured I would update this thread all the way and now I'll let it die. It's been a big learning curve and I'm still trying to figure it all out. I don't expect the efi to make me faster or anything, just more efficient and hopefully easier to hop in and start up year round.
I'm about tapped out on spending money on this for now, but hope for a few upgrades down the line.
Thanks again to everyone.

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