I'm knocking on the door on the 52 pill...fuel system should go in next week after I sort out this clutch issue..
heading to the track tonight
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Drifting
Joined: May 2005
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From: Avon Indiana
St. Jude Donor '09
[QUOTE=LS1LT1;1581878694]If that head swap works out (there's always some potential downside risk when swapping heads, it's possible that those stock L92/LS3 castings are just so perfectly matched to your cam that any change could disrupt it, but that's unlikely 
) and as long that hard hittin' big stall can still hook in cold weather (MIR's legendary track prep should help there) then you have a VERY good shot at getting into the 10.2s. 
Dare I say it, on a 1.35 sixty foot no less?
I like the way you think Marc!
Justin, I have been scratching my head for mph since I put the h/c in this thing. I did seem to pick up 1 mph with the ported intake though!
It seems like the stick cars are easily picking up 29-30 mph between the splits.. I routinely pick up 22-24
My compression should be up to ~10.85 when I do the head swap from about 10.6 now by running the .040 gasket instead of the .051(or .053,I can't remember what stock is)
) and as long that hard hittin' big stall can still hook in cold weather (MIR's legendary track prep should help there) then you have a VERY good shot at getting into the 10.2s. Dare I say it, on a 1.35 sixty foot no less?
I like the way you think Marc!
Justin, I have been scratching my head for mph since I put the h/c in this thing. I did seem to pick up 1 mph with the ported intake though!
It seems like the stick cars are easily picking up 29-30 mph between the splits.. I routinely pick up 22-24
My compression should be up to ~10.85 when I do the head swap from about 10.6 now by running the .040 gasket instead of the .051(or .053,I can't remember what stock is)
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Joined: Mar 2005
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From: Southampton NJ
[QUOTE=stanger383;1581878791]
its the yank 4000, all high stall converters lose mph up top, my 3800 vig wouldn't ever brake stall over 3000 rpm. the convertible top probably gets air pushed down between the ribs of the top, and has more down force because of the trunk
If that head swap works out (there's always some potential downside risk when swapping heads, it's possible that those stock L92/LS3 castings are just so perfectly matched to your cam that any change could disrupt it, but that's unlikely ) and as long that hard hittin' big stall can still hook in cold weather (MIR's legendary track prep should help there) then you have a VERY good shot at getting into the 10.2s.
Dare I say it, on a 1.35 sixty foot no less?
I like the way you think Marc!
Justin, I have been scratching my head for mph since I put the h/c in this thing. I did seem to pick up 1 mph with the ported intake though!
It seems like the stick cars are easily picking up 29-30 mph between the splits.. I routinely pick up 22-24
My compression should be up to ~10.85 when I do the head swap from about 10.6 now by running the .040 gasket instead of the .051(or .053,I can't remember what stock is)
) and as long that hard hittin' big stall can still hook in cold weather (MIR's legendary track prep should help there) then you have a VERY good shot at getting into the 10.2s. Dare I say it, on a 1.35 sixty foot no less?
I like the way you think Marc!
Justin, I have been scratching my head for mph since I put the h/c in this thing. I did seem to pick up 1 mph with the ported intake though!
It seems like the stick cars are easily picking up 29-30 mph between the splits.. I routinely pick up 22-24
My compression should be up to ~10.85 when I do the head swap from about 10.6 now by running the .040 gasket instead of the .051(or .053,I can't remember what stock is)
Le Mans Master
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From: Tampa FL (formerly Justinjor)
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St. Jude Donor '11-'12-'13-'14
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From: St. Louis, MO
St. Jude Donor '08
[QUOTE=dennis50nj;1581879994]Actually the convertible top tries to suck up off the car at speed, when tops get old they look like there's a beach ball in the middle!
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From: Southampton NJ
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
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Le Mans Master
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From: Tampa FL (formerly Justinjor)
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St. Jude Donor '11-'12-'13-'14
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From: Southampton NJ
i didnt know for sure if the plate was different then the nozzle, so its the same that's pretty good with a progressive system how was traction and finish line rpm
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From: Montreal
St. Jude Donor '13
I know its not comparable, because I'm not N/A, but for the convertible issue I can tell you that my 10.5 - 10.6 runs are all at 131 mph. I think its the stall, not the roof effecting the speeds.
Tech Contributor
Joined: Jul 2002
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From: St. Louis, MO
St. Jude Donor '08
Justin, I have been scratching my head for mph since I put the h/c in this thing. I did seem to pick up 1 mph with the ported intake though!
It seems like the stick cars are easily picking up 29-30 mph between the splits.. I routinely pick up 22-24
My compression should be up to ~10.85 when I do the head swap from about 10.6 now by running the .040 gasket instead of the .051(or .053,I can't remember what stock is)
It seems like the stick cars are easily picking up 29-30 mph between the splits.. I routinely pick up 22-24
My compression should be up to ~10.85 when I do the head swap from about 10.6 now by running the .040 gasket instead of the .051(or .053,I can't remember what stock is)
Race Director
Joined: Mar 2005
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From: Southampton NJ
i believe its the converter too, but why doesn't mine mph low, as far as locking you should use a multi disk, i cant get mine to lock on the dyno in third gear to get an accurate dyno number
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Drifting
Joined: May 2005
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From: Avon Indiana
St. Jude Donor '09
I honestly would have thought it to be the aero of the top until I saw your speeds Joe. I probably will not race the car again until I throw those heads on and hopefully build the trans too. If it turns out that I get the heads on quicker than I get to the trans and we see a good weather day then heck, I might go run with the trans slipping into 3rd. My car has ALWAYS trapped very low. Even bone stock with alot of runs the best mph I ever ran was 12.93@108.02 mostly 106-107. That led me to think it was the top. I would love to find 4-5mph on the back half because it worth in my opinion about .03-.04. I most likely will not lock the converter until MIR because I will have to use all track time to dial my tune in on the track. This thing only ever saw one dyno pull with no changes and a lean 13 AFR. I currently run 12.35 AFR and it became much quicker. I will most definitely try locking the conv. if the tune on the new heads goes really smooth(which I think it will) or at MIR where we can all enjoy the carnage if the converter is not happy with my choice..lol
Joe you need to go for a ride in my car and it might surprise you that the trans doesn't feel as slippery as an old hot rod of days past.
anyone coming to indy in Oct for the lsx event?
Joe you need to go for a ride in my car and it might surprise you that the trans doesn't feel as slippery as an old hot rod of days past.
anyone coming to indy in Oct for the lsx event?
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From: St. Louis, MO
St. Jude Donor '08
I'm looking forward to going for a ride! Yes the new converters are a lot better than the old school days for sure.
The top's not slowing you down, notice Justasheet is a convertible too and traps exact same as me. Remember I also had my car up to 185 a few times on the mile run, my top didn't slow me down, I ran up to 6800 in 5th no problem.
It's the converter, if you lock it you'll go faster. You should call Jeremy Preston and ask him. He's the man on these things.
The top's not slowing you down, notice Justasheet is a convertible too and traps exact same as me. Remember I also had my car up to 185 a few times on the mile run, my top didn't slow me down, I ran up to 6800 in 5th no problem.
It's the converter, if you lock it you'll go faster. You should call Jeremy Preston and ask him. He's the man on these things.
Thread Starter
Drifting
Joined: May 2005
Posts: 1,655
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From: Avon Indiana
St. Jude Donor '09
this still doesnt explain why I ran 121.56mph as a BEST speed with the same heads and cam with a STOCK converter. This car does not want to mph!!
Justasheet, what does your car mph locked vs unlocked? with same tune?
Last edited by stanger383; Sep 20, 2012 at 09:06 PM.
Race Director
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From: Southampton NJ
maybe you have one hanging up, are you leting off before the finish line, have you ran it at another track, maybe the mph timer is off, your 1/8 times are fine, and the top is slowing you down some and the converter, maybe your tune
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
I'm looking forward to going for a ride! Yes the new converters are a lot better than the old school days for sure.
The top's not slowing you down, notice Justasheet is a convertible too and traps exact same as me. Remember I also had my car up to 185 a few times on the mile run, my top didn't slow me down, I ran up to 6800 in 5th no problem.
It's the converter, if you lock it you'll go faster. You should call Jeremy Preston and ask him. He's the man on these things.
The top's not slowing you down, notice Justasheet is a convertible too and traps exact same as me. Remember I also had my car up to 185 a few times on the mile run, my top didn't slow me down, I ran up to 6800 in 5th no problem.
It's the converter, if you lock it you'll go faster. You should call Jeremy Preston and ask him. He's the man on these things.