Cam only class finally..
09-30-2010, 01:48 PM
#1
Cam only class finally.. https://ls1tech.com/forums/eastern-m...v-6-7-mir.html
Motor Street ....
8-Cylinder Engines – Chevy LT / LS series
Engine: This is for cam only cars, with bolt-ons. Only the following factory blocks are permitted: LT1, LT4, LS1, LS2, LS3, and LS6 series blocks only.
LS2 and LS3 engines and cylinder heads are only permitted in cars with IRS rear suspension.
No aftermarket blocks are permitted. Internal engine modifications are prohibited except for overbore, aftermarket camshafts,
hydraulic lifters, and valve springs only.
See chart below for max CID. External bolt-on parts are allowed.
Approved Cylinder Heads: Any valve job is permitted. OEM cylinder heads only are permitted with the following casting numbers: 241, 243, 317, 706, 799, 853, and 862. Cylinder heads must remain stock, no port work or milling of cylinder head.
Power Adders: Turbochargers, Superchargers, and Nitrous Oxide are prohibited. All nitrous bottles and solenoids must be removed from car and nitrous nozzles must be capped.
Induction: Engine must be EFI. All OEM intakes are permitted. The only aftermarket intakes permitted are: BBK intakes, Typhoon intakes, and Fast 78mm, 90mm, 92mm, and 102mm intakes.
Engine Motor & Max Displacement Cylinder Heads Car & Driver Minimum Weight
8-cylinder LT1 & LT4 (Up to 355ci.) (Un-Ported as cast) 2950 lbs.
8-cylinder LS1 & LS6 (Up to 348ci.) (Un-Ported as cast) 3050 lbs.
8-cylinder LS2 (Up to 366ci.) (Un-Ported as cast) 3150 lbs.
8-cylinder LS3 (Up to 380ci.) (Un-Ported as cast) 3350 lbs.
This is by far the biggest event every year at Maryland International Raceway! Last year we had 786 racers at the event and over 10,000 fans, plus another 500 car show entries! There are 7 heads-up classes, 2 index classes, and 2 E.T. classes. Full information and video is at www.importvsdomestic.com
Don't miss this event!
Don't miss this event!
Motor Street ....
8-Cylinder Engines – Chevy LT / LS series
Engine: This is for cam only cars, with bolt-ons. Only the following factory blocks are permitted: LT1, LT4, LS1, LS2, LS3, and LS6 series blocks only.
LS2 and LS3 engines and cylinder heads are only permitted in cars with IRS rear suspension.
No aftermarket blocks are permitted. Internal engine modifications are prohibited except for overbore, aftermarket camshafts,
hydraulic lifters, and valve springs only.
See chart below for max CID. External bolt-on parts are allowed.
Approved Cylinder Heads: Any valve job is permitted. OEM cylinder heads only are permitted with the following casting numbers: 241, 243, 317, 706, 799, 853, and 862. Cylinder heads must remain stock, no port work or milling of cylinder head.
Power Adders: Turbochargers, Superchargers, and Nitrous Oxide are prohibited. All nitrous bottles and solenoids must be removed from car and nitrous nozzles must be capped.
Induction: Engine must be EFI. All OEM intakes are permitted. The only aftermarket intakes permitted are: BBK intakes, Typhoon intakes, and Fast 78mm, 90mm, 92mm, and 102mm intakes.
Engine Motor & Max Displacement Cylinder Heads Car & Driver Minimum Weight
8-cylinder LT1 & LT4 (Up to 355ci.) (Un-Ported as cast) 2950 lbs.
8-cylinder LS1 & LS6 (Up to 348ci.) (Un-Ported as cast) 3050 lbs.
8-cylinder LS2 (Up to 366ci.) (Un-Ported as cast) 3150 lbs.
8-cylinder LS3 (Up to 380ci.) (Un-Ported as cast) 3350 lbs.
10-01-2010, 12:48 PM
#5
TECH Enthusiast
iTrader: (17)
Join Date: Feb 2006
Location: Charlotte, NC
Posts: 731
Likes: 0
Received 0 Likes
on
0 Posts
To anyone thinking about going, DO IT. It is always an awesome event and the classes this year are even better than before.
10-01-2010, 04:04 PM
#6
12 Second Club
iTrader: (6)
Join Date: Apr 2006
Location: Rochester, NY
Posts: 456
Likes: 0
Received 0 Likes
on
0 Posts
ya, i posted i would put up $500 to tear my heads off last year at my local track, on a local forum afetr running 10.7s and10.6s 2 different weeks. i'll take my if anyone want to put money up. they can also pull the intake and look down the runner, you can see if the bowl is grinded on ect. and check if there milled for cr, but cheaking the height to the vc rail, and the head bolt sholder.
i asked in the easy coast section about runing any of the listed casting, wayne (atvracer) said it was cool. i think him and shizzy helped with these rules. also there some na hondas running mid 10's i think i saw a 10.3 too in this class.
"Approved Cylinder Heads: Any valve job is permitted. OEM cylinder heads only are permitted with the following casting numbers: 241, 243, 317, 706, 799, 853, and 862. Cylinder heads must remain stock, no port work or milling of cylinder head"
you can work within the rules and be legal, and find some more power
, slicks is limited to a 26x11.5 witch is not the normal size we would run. but thats the same for all v8 cars. even the mod guys and 5.0. i really wish i was a auto. the 28inch 275/60/15 dr i think is a better tire for a auto for sure. with the t56 its gona be hard, you also can't run a slipper clutch on top of this. the rules are pretty fair for how a na honda, na fox body, stock head ls1 can run so close. i'm more excited about this this the shootout right now.
i asked in the easy coast section about runing any of the listed casting, wayne (atvracer) said it was cool. i think him and shizzy helped with these rules. also there some na hondas running mid 10's i think i saw a 10.3 too in this class.
"Approved Cylinder Heads: Any valve job is permitted. OEM cylinder heads only are permitted with the following casting numbers: 241, 243, 317, 706, 799, 853, and 862. Cylinder heads must remain stock, no port work or milling of cylinder head"
you can work within the rules and be legal, and find some more power
, slicks is limited to a 26x11.5 witch is not the normal size we would run. but thats the same for all v8 cars. even the mod guys and 5.0. i really wish i was a auto. the 28inch 275/60/15 dr i think is a better tire for a auto for sure. with the t56 its gona be hard, you also can't run a slipper clutch on top of this. the rules are pretty fair for how a na honda, na fox body, stock head ls1 can run so close. i'm more excited about this this the shootout right now. 
.
Trending Topics
10-03-2010, 07:36 AM
#10
With a 243 head and the right valve job, along with a piston to really get the compression up there, and make room for a TON of camshaft, (like alot more then the trex that most of the fast cam only cars run) and a car at min weight I think a 9 second pass is a possibility. Rod bolts are gonna be needed, and I don't know if the stock rods will like 7800 rpm LOL, but if it will hold together, it could be done.
When my sled is done if someone wants to put a motor together like that I'll toss it in for next year and give it hell. Give me something to do while I'm still getting the rest of the other one together.
When my sled is done if someone wants to put a motor together like that I'll toss it in for next year and give it hell. Give me something to do while I'm still getting the rest of the other one together.
10-03-2010, 10:29 AM
#11
ya i see you can run some compression, with pistons, and thinner hg even. but dont think anyone gona do all that for 1,200.
whats about this tire size rules
slicks limited to 26x11.5 and dr no 315,325,295,285
i guess the 28inch 275 dr would be the best then, but not sure for a 6speed kinds sucks.
whats about this tire size rules
slicks limited to 26x11.5 and dr no 315,325,295,285
i guess the 28inch 275 dr would be the best then, but not sure for a 6speed kinds sucks.
Last edited by studderin; 10-17-2010 at 10:21 PM.
10-03-2010, 10:32 AM
#12
6 speed car's gonna be somewhat hosed with those rules, because of the tire, and now slipper clutch allowed.
If they allowed a mcloud softloc I think the 275 would be fine as you could get the clutch set to work with the tire.. but if that's not legal then I think a 26/11.5 tire on a 15x12 rim, is gonna be the best route to go.Spread the tire out and get as much contact patch as possible, and hit the thing hard, and make sure the car doesn't spin 15 feet out, that's the best bet.
I don't think I would spend a whole lot to get a motor together either for that. But, I certainly would have NO problem putting one together, with the intent of it only staying together for that one race and a testing day before hand
If they allowed a mcloud softloc I think the 275 would be fine as you could get the clutch set to work with the tire.. but if that's not legal then I think a 26/11.5 tire on a 15x12 rim, is gonna be the best route to go.Spread the tire out and get as much contact patch as possible, and hit the thing hard, and make sure the car doesn't spin 15 feet out, that's the best bet.
I don't think I would spend a whole lot to get a motor together either for that. But, I certainly would have NO problem putting one together, with the intent of it only staying together for that one race and a testing day before hand
10-12-2010, 10:40 AM
#15
10 Second Club
iTrader: (12)
Join Date: May 2004
Location: Chicago IL/ Lake Geneva WI
Posts: 930
Likes: 0
Received 0 Likes
on
0 Posts
I wish this was more than 1 event, and closer to the midwest. I can't justify the needed changes for my car to run the class, plus the distance.
10-13-2010, 04:39 PM
#16
i talked to the mt guys, they said to run the 26x10.5 stiff and not a dr, i think there is a set of 4;10 at the shop i could run. but dont know if thats the right setup right now. plus have to raise the back up or lower the front more and re adjust the suspension for the smaller rear tires, is a pain in the *** for sure for one race. but its not gona be setup for everyone car to a T.
10-13-2010, 08:18 PM
#17
That's it at the end of the day. Every set of rules has something in them that makes a car, or some cars not fit in perfectly.
Change stuff, or don't race is what it comes down to. Guys that want to race, will do what's needed. Always been that way, always will be. May not have the cars in record setting trim because of it, but everyone's in the same boat.
Change stuff, or don't race is what it comes down to. Guys that want to race, will do what's needed. Always been that way, always will be. May not have the cars in record setting trim because of it, but everyone's in the same boat.
