[Heads] What size runners ??
Thread Starter
Race Director
Joined: Apr 2000
Posts: 11,840
Likes: 0
From: Galloway NJ
[Heads] What size runners ??
I'm looking at getting a set of Dart Iron Eagle heads, and am wondering if I should go with the 180, 200 or 215cc runners with the following engine specs??
350
9.5 CR
XE268
Performer intake
Holley 750 DP
350
9.5 CR
XE268
Performer intake
Holley 750 DP
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Re: [Heads] What size runners ?? (Metal Wulf)
I really like what 69stingray said in a comparison of small block street heads. He averaged the flow numbers for .3” - .55” valve lift. You can take a look on post Re: help me buy large valve heads (wadey).
I really like the World Products torquers I bought pocket ported for $850 from Performance Chevy Products in Phoenix, AZ (602)254-9586.
Only 170cc runners and should work great on a mild 350 street machine. That’s larger than any stock runner the General used.
Now will that cam run into the high rpm’s that could use large runners at all? 9.6 c.r. is nice (wish I had it) and should help low rpm torque. This engine would be fun to drive with small runners – why test big runners when you’d have a nice street package already? Could you really gain that much with big runners to risk having a PITA to drive around town? :chevy :seeya
I really like the World Products torquers I bought pocket ported for $850 from Performance Chevy Products in Phoenix, AZ (602)254-9586.
Only 170cc runners and should work great on a mild 350 street machine. That’s larger than any stock runner the General used.
Now will that cam run into the high rpm’s that could use large runners at all? 9.6 c.r. is nice (wish I had it) and should help low rpm torque. This engine would be fun to drive with small runners – why test big runners when you’d have a nice street package already? Could you really gain that much with big runners to risk having a PITA to drive around town? :chevy :seeya
Thread Starter
Race Director
Joined: Apr 2000
Posts: 11,840
Likes: 0
From: Galloway NJ
Re: [Heads] What size runners ?? (cardo0)
I was thinking the 180's, but then motorhead got me thinking about the 200's...
http://forums.corvetteforum.com/zerothread?id=659462
http://forums.corvetteforum.com/zerothread?id=659462
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Re: [Heads] What size runners ?? (Metal Wulf)
I would suggest the 180's or 200's. I have the 180s and they work well with my Crane Energizer 272H cam. I may step up to a bigger cam to take advantage of .400-.500 flow rates.
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Re: [Heads] What size runners ?? (Metal Wulf)
I'm looking at getting a set of Dart Iron Eagle heads, and am wondering if I should go with the 180, 200 or 215cc runners with the following engine specs??
350
9.5 CR
XE268
Performer intake
Holley 750 DP
350
9.5 CR
XE268
Performer intake
Holley 750 DP
Melting Slicks
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
Re: [Heads] What size runners ?? (GrandSportC3)
I would go with the 200's.With a 350 running a mild cam the 200's will not be too big,and if there's any chance in the future for stroking or swapping in a 400 block,the 180's will be too small for sure.(Unless you want a tow truck engine to pull the race car to the track.) :cheers:
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Thread Starter
Race Director
Joined: Apr 2000
Posts: 11,840
Likes: 0
From: Galloway NJ
Re: [Heads] What size runners ?? (The Money Pit)
I would go with the 200's.With a 350 running a mild cam the 200's will not be too big,and if there's any chance in the future for stroking or swapping in a 400 block,the 180's will be too small for sure.(Unless you want a tow truck engine to pull the race car to the track.) :cheers:
