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Author Topic:   49 cc dart heads, which runner for 350cfm carb?
sjakes
Dirt Freak

Total posts: 254
posted December 02, 2004 10:09 AM  
Anyone have any input or help on if a person was to try some 49 cc dart heads, which runners to get them in? I'm guessing 180, or 200cc? Would it make a big difference if a person used them on a 406, 377, 383, 355 etc.

Any insight is much appreciated!!

Shawn

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stockcar5
Dirt Forum Champ
Total posts: 578
posted December 02, 2004 11:01 AM  
180 work very well. the 200s would be better suited for the outlaw tracks like fairmont.

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RACEINMUD
Dirt Freak

Total posts: 323
posted December 02, 2004 11:08 AM  
Hi Shawn, I was wandering the same thing. I have a 406 with a stock crank and eagle I rods w/ stock 461 heads but with a Victor Jr and a 750 Barry Grant. If I bolt on some 49cc what changes will need to be done and is that to much comp. for my stock crank? Race

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted December 02, 2004 11:13 AM  
Shawn,
If your running a 350-377 i'd go with the 180cc chambers with a good bit of working done to th em. If your running a 406, 421, or 434 i'd be tempted to step up to the 200cc and do a lot of port work.

sjakes
Dirt Freak

Total posts: 254
posted December 02, 2004 08:43 PM  
So it basically sounds like for the long term solution it would be wise to stick with the 180's, seeing how the 400's are no more after 2006, also it would most like be choked off by that 350 cfm carb.

Just not to sure I'm up for giving away a $800 pair of heads for someone shopping for a complete motor for $425..... I am always considering options although.

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stockcar5
Dirt Forum Champ
Total posts: 578
posted December 03, 2004 11:16 AM  
hey shawn..look on ebay

there is a guy selling blem dart ss heads for 275 a pair. they are a 170cc runner but they will work well with the small carb.

thats besides the fact that they are dirt cheap.

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Xtreme12x
Dirt Forum Champ
Total posts: 874
posted December 03, 2004 12:23 PM  
Thats a great price for a set of heads... I'd go with them if you want to get your hands on them. Just do a lot of port work and they'll work great. Don't tell anyone but the fastest stock car at our local track racing the imca class of stock cars ran double humps... just took his sweet time getting the flow to go!! Thats the other option you have is runnins Double humps, or you could even run smogger heads with a lot of port work, and big domer pistons...

beachracing
Dirt Forum Racer

Total posts: 94
posted December 04, 2004 09:23 AM  
If your running anything 1/4-3/8 the 180's are fine with a little porting(about 185-190cc). Personally I would use the 200, and cam accordingly so it will run at either a small, or big track. A 200cc can build just as much torque if it is cammed right, and beleive or not it will pull more air in to the motor, and there is a horsepower advantage to the 200's. What type of cam do you have to use? also, how often does the tracks you run at go dryslick.

sjakes
Dirt Freak

Total posts: 254
posted December 06, 2004 05:57 AM  
quote:
Originally posted by stockcar5:
hey shawn..look on ebay

there is a guy selling blem dart ss heads for 275 a pair. they are a 170cc runner but they will work well with the small carb.

thats besides the fact that they are dirt cheap.


Thanks for the heads up, Luke. I missed out, I was out all weekend. Still pondering what to do, would like to try them. Although you know at the lovely track, once I get competitive someone could come shopping....lol. Oh yeah that never happens at Arlington.

If you come across anything let me know.

[This message has been edited by sjakes (edited December 06, 2004).]

speedy2
Dirt Full Roller

Total posts: 54
posted December 17, 2004 01:10 PM  
hey brett who are you talking about that runs the double humps

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted December 17, 2004 01:40 PM  
dave it was years ago... now the dart/world/pro heads are getting cheaper then any double hump head... talk to zaruba... he's the one that did eddies motors and took the time to do his heads the right way..

istock59
Dirt Forum Champ
Total posts: 501
posted December 17, 2004 01:54 PM  
There goes the neighborhood, with speedy2 here too! Guess I'll find somewhere else to post....

LOL.

[This message has been edited by istock59 (edited December 17, 2004).]

speedy2
Dirt Full Roller

Total posts: 54
posted December 17, 2004 03:44 PM  
Kevin is the one that does ALL of my motors. He knows what hes doin thats why i have him do them. HAHAHA im on here too tracy. You puttin a new body style on for next year? Im not changin, got mine almost ready for body work and paint. You know of anyone around here goin to new style body?

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted December 17, 2004 04:24 PM  
then your in good hands dave...
i have heard wollams are looking at going to a new monte... thats it for right now... is steve painting your car again? i havent talked to him for a long while now..

speedy2
Dirt Full Roller

Total posts: 54
posted December 17, 2004 05:14 PM  
yeah im having him paint it again. wont be till after the 1st of the year. still put car back together after changin some things after the rules came out. did you sell your car? what are you getting new?

istock59
Dirt Forum Champ
Total posts: 501
posted December 17, 2004 07:44 PM  
Nah Speedy, I already had a really clean complete 87 Regal parts-car. Figured I might as well use it, instead of sell it. Besides, let everyone else figure out how to "fit" those FWD bodies on the metric frames... Then we'll copy them! LOL...

Man, ready for paint already? I didn't do anything but air up the tires, until the rules came out. Just started hacking up the old-heap a couple weeks ago....

speedy2
Dirt Full Roller

Total posts: 54
posted December 17, 2004 08:55 PM  
Same with me i had a 86 regal to part out, plus after doin so many, cuttin these old cars is like cuttin a cake. I think hoskins is puttin a new body on but i dont think hes started cutting on it yet. What do you think of the no 400 blocks after 2006?

istock59
Dirt Forum Champ
Total posts: 501
posted December 19, 2004 07:41 AM  
Thought the 2K was building a new PRC? Is he putting a new body on a new chassis?

No 400s don't bother me a bit, everything I have is 350 blocked. Not sure I understand IMCAs thinking tho, people are just going to spend more $$ on 383s, 396s and 401s....

stockcar5
Dirt Forum Champ
Total posts: 578
posted December 19, 2004 08:40 AM  
i think its kinda wierd that imca says no 400 blocks and not no 400 parts. its just as cheap to build a 406 as it is a 383. some say the 400 cores cost more? by the time i buy a complete motor for 200$ and sell the internals on ebay...the block is free!

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speedy2
Dirt Full Roller

Total posts: 54
posted December 19, 2004 07:01 PM  
yeah hes building a new PRC and he got a newer monte to put on it. His car was the one JRs had a nationals on display. I think they just got rid of the 400 blocks cuz they didnt want to give up the 383's

istock59
Dirt Forum Champ
Total posts: 501
posted December 20, 2004 07:48 AM  
There was a couple of the 90's Monte's at that outlaw race I ran in Indee last fall. Personally, I didn't think they looked very good.

If I was going to put one on, I'd look for a Lumina or Grand Prix body.

Larry Lundin
Dirt Full Roller

Total posts: 45
posted December 21, 2004 08:30 AM  
I bolted a set on my flat top 406. I used the 200cc because of engine size and alcohol. I would think you would need to take cubic inch, camshaft size and carb. all into consideration. However, the 200cc may come in handy down the road some day and they are more popular if there comes a time to sell them.

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