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New bolt-on LT1 record

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Old 09-22-2008 | 11:45 PM
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New bolt-on LT1 record

Hey I know some of you guys are shooting for the bolt-on LT1 record that was set for Shon Herron years ago at 11.805 @ 113, and more recently an very honerable mention went out to Tom Cowle for his 11.702 @ 114 run earlier this year. I say honerable mention because a lot of people argued that since he switched to a carb and carb'd intake that it was no longer in the rules for the bolt-on LT1 record. Either way I am glad to put that argument to rest by knocking both of them out of the running yesterday, too bad I only got 1 good run in, and I know there is more to get out of it...

I run in a local index series so I was not able to test full outright passes, but I let her rip on one of my qualifying runs just to see how fast it could go. I guess I shoud working on moving up to the 11.5 index...

Here is that run...


vid


too bad f-quick srinks the vid down, at full size you can read the board, but either way you can hear the announcer say "11.561 @ 118 for John P. vs. 12.06 @ 113"
Old 09-23-2008 | 01:23 AM
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That is freakin sick! That is a fast trap speed for a bolt on car!!!!

can you give a list of what exactly qualifies as "bolt ons"

what rear end are you running and what tires are you running on.

thanks,
Jeremy
Old 09-23-2008 | 06:29 AM
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Here are the official rules, and they have been in place for many years now. The rules were made up by the editors of GM High Tech when they started testing bolt-on and seeing how far people could take them.

Here is the article with the rules...
http://www.1slowformula.com/gmhtp_bolt-on_article.htm


Shortly after that article was published (within a year or so) Stephen Stumpf (SAR2K) took the record to 11.90's then a year later (early '06) Shon Herron set it to 11.805 where it remained until now. Although I would like to add that Tom Cowle took the bolt-on LT1 to new limits earlier this year with his carb'd LT1 and we should not forget all the stuff he did to have his car in the 11.70's...
Old 09-23-2008 | 06:43 AM
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Nice passes, congrats on your hard work. See no disclaimers

What was the corrected altitude on that pass?

What was the big change, or is it just that mineshaft air you run in?
Old 09-23-2008 | 06:48 AM
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How do you get 118 mph With no horsepower?


I protest you.....tear it down
Old 09-23-2008 | 06:59 AM
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mike he put ported heads on it
Old 09-23-2008 | 07:01 AM
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Originally Posted by tomcowle
Nice passes, congrats on your hard work. See no disclaimers

What was the corrected altitude on that pass?

What was the big change, or is it just that mineshaft air you run in?
Da was just under 1000' and temp was about 75*, I took a lot of weight out when doing the front brakes. They were dragging, so I replaced then with lighweight stuff and also did from A-arms as well, it got me pretty damn light. I was at just under 3100# at the begining of the season when I ran the 11.860 @ 115, and now it weighs in at 2835#...

Originally Posted by mdacton
How do you get 118 mph With no horsepower?


I protest you.....tear it down
OK, if you come up and help, and yeah I will need help on the teardown anyway since none of the bolts on the motor other then valve cover bolts have ever been removed. It is only a 3 hr drive for you to see for yourself, and if I tear it down it will not go back together as just a bolt-on car, LOL...

Last edited by 1SlowFormula; 09-23-2008 at 07:07 AM. Reason: spelling corrections
Old 09-23-2008 | 07:02 AM
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Originally Posted by tomcowle
mike he put ported heads on it
Um no I didn't, unless that was a joke, you should know me better then that...

I can't wait to see what it does when I do get those ported heads on there though...

Last edited by 1SlowFormula; 09-23-2008 at 07:04 AM.
Old 09-23-2008 | 07:03 AM
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joke
Old 09-23-2008 | 07:04 AM
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Originally Posted by 1SlowFormula
Um no I didn't, unless that was a joke, you should know me better then that...
I know what you did....


ported the heads on the car and vacuumed the shaving out......"heads never been removed" !!




sneaky pete
Old 09-23-2008 | 07:16 AM
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Ahh I see, you guys are just bustin my *****, I must be a little slow this morning because I couldn't believe you guys would turn on me, LOL...
Old 09-23-2008 | 07:33 AM
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Acid works better mike, ooops did I just say that?!!!

no vacuum needed to remove the shavings.
Old 09-23-2008 | 07:44 AM
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Originally Posted by tomcowle
Acid works better mike, ooops did I just say that?!!!

no vacuum needed to remove the shavings.



I know, Lets head to his place and cc the heads
Old 09-23-2008 | 08:27 AM
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Congrats, it's not easy getting these cars down to 2800lbs for sure and I thought 120mph was good for a heads/cam Lt1 but not when you run 118mph. My car is 3,350lbs and I took alot of stuff out of the car but I also have a rollbar, 12bolt and full interior so I guess it's time to get some more weight out. Later

Last edited by T/A lt1; 09-23-2008 at 08:29 AM.
Old 09-23-2008 | 10:39 AM
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It's not official unless someone knowledgeable tears it down and hands it back to you in a thousand pieces. Then again you would probably find a way to make it even faster while putting it back together. Congrats!!!!!!!!!!


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