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Author Topic:   intake
YAZ
Dirt Forum Racer

Total posts: 77
posted October 16, 2002 09:55 PM
anyone know what a good stock 4 barrel cast iron intake to run in street stocks?
Im building a 350 bored 40 over, with 993
heads.

Scoot
Dirt Freak

Total posts: 330
posted October 18, 2002 09:54 PM
YAZ I've got a stock cast iron 4 barrel high rise intake, it seams to work well.

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Scoot
Smith Racing Team
870-365-5989

YAZ
Dirt Forum Racer

Total posts: 77
posted October 19, 2002 12:17 AM
thanks for the reply scoot.
I forgot to mention our rules
dont allow high rise intakes.
I herd that the one's with an
x are suppose to be good one's,
I picked one up, but a friend
tried it on his and gave it back.
said it flowed worse than the one
he had without the x.

tilley88
Dirt Freak

Total posts: 353
posted October 19, 2002 01:24 AM
Late 70's non-egr intake will pull at least 7000 rpms. About as stock as you can get!

wrenchjockey
Dirt Full Roller

Total posts: 31
posted October 19, 2002 09:40 AM
I've been told by one of a group of three brothers who run up front at my track every week that the intake to have is a casting number 346249 "T" intake. I've been looking for one ever since he told me about it, but haven't had any luck. It's an EGR intake, that came on 305 and 350's (trucks??). The "T" intake is supposed to have a higher plenum than other intakes with the same casting number. So if you find two, give me a holler!!

Scoot
Dirt Freak

Total posts: 330
posted October 19, 2002 06:56 PM
You guys might try here and see if you see what you need. http://www.gmpartsdirect.com

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Scoot
Smith Racing Team
870-365-5989

martnracn_91
Dirt Forum Racer

Total posts: 80
posted October 19, 2002 09:31 PM
Everyone that i race with and including myself run a cast 4barrel intake with the casting number 346250 and it seems to work pretty good. Thats just my thought.

YAZ
Dirt Forum Racer

Total posts: 77
posted October 21, 2002 09:30 PM
martnracn_91 I found a 346250 intake,
Do you run a two barrel in your class? If so did you mount it in the middle or back all the way above the two large secondary holes?

Icepickle
Dirt Newbie

Total posts: 4
posted October 24, 2002 12:04 AM
I know where you can get a cast iron vortec intake that is made for a 4 barrel spread bore carburetor. That is if you are allowed to use vortec heads. If you have any questions email cchris300@aol.com

[This message has been edited by Icepickle (edited October 24, 2002).]

20bmw
Dirt Roller

Total posts: 24
posted October 29, 2002 09:56 PM
Go to www.sdpc2000.com

GM performance cast iron 4bb bowtie intake

This is the cast iron version of the aluminum Z-28 high-rise intake
Part# 14096011

tilley88
Dirt Freak

Total posts: 353
posted October 30, 2002 12:21 AM
Bowtie's are not stock, they are over the counter GM aftermarket!

marple
Dirt Maniac

Total posts: 117
posted October 30, 2002 05:01 PM
i use the bowtie intake.i was under the assumption that it was "stock" since it has a gm part #.wasnt it offered in marine applications?

tilley88
Dirt Freak

Total posts: 353
posted October 30, 2002 06:42 PM
Bowties were used in marine applications, but never put on any "production" vehicle. Same goes for the Bowtie heads and 292 "turbo" angle plug heads. Some tracks are really liberal with the rules, tho. If you can run one, by all means do. They flow extremely well.

Icepickle
Dirt Newbie

Total posts: 4
posted November 01, 2002 02:48 PM
I have stock cast iron vortec intakes, brand new in the box. They are IMCA legal. cchris300@aol.com

martnracn_91
Dirt Forum Racer

Total posts: 80
posted November 01, 2002 07:54 PM
Sorry I took so long. I use a 4412 Holley 500cfm and mount it right in the middle and has not give me one lick of trouble.

avila
Dirt Full Roller

Total posts: 55
posted November 04, 2002 10:29 AM
I found a 346249 "T" intake in the junk yard.
After pulling it and bringing it home I compared it side by side with my 346250.

The 49 is by far better. The runners are
a little wider/rounder which allows more
air/fuel voulme. On the order of about 1/10th of an inch.

The 49 has about a 3/4" hole drilled horizontally between the divider where the carb sits a top, this must allow for a more even distribution between left and right runner banks.

The 49 has a lot less material in area under which the carb sits a top, allowing for more air/fuel mixture instead of cast iron. Also, there are not 90 degree edges in the transistion from the top of the manifold into the runners; instead they are smooth curves which allow mixture to flow better.

Thanks for the tip wrenchjockey; however, I only found 1 of these in the junkyard. Picked it up for $30 plus a core.

wrenchjockey
Dirt Full Roller

Total posts: 31
posted November 04, 2002 06:40 PM
AVILA - Believe it or not, I got the high bid on a 249 "T" intake on eBay a few days ago, $9.99 plus $25 shipping. But I still would like another for my spare motor, if anyone has one. Thanks for the side-by-side comparison, it validates what I was told, and possibly saved me from having to buy a 346250 to find out what you did. This forum is by far the best source for information anywhere other than getting inside Sleepy's head.

YAZ
Dirt Forum Racer

Total posts: 77
posted November 11, 2002 11:22 PM
thanks for your input.
believe it or not my dad found a 249t
at a recycle yard,paid $3.00 for it.
I see what you mean by comparing it to
a 250.
thank agian.

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