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Technical => Engine Tech => Topic started by: quicksilver on March 21, 2007, 12:25:20 PM

Title: found nice heads
Post by: quicksilver on March 21, 2007, 12:25:20 PM
i found heads that have 1.9 intake and 1.6 exhaust valves, will these work with stock pistons using the HO cam?
Title: found nice heads
Post by: Kitz Kat on March 21, 2007, 01:40:15 PM
They should,but you have to check the clearance.Were they shaved?,Your pretty borderline with flat tops.
Title: found nice heads
Post by: V8Demon on March 21, 2007, 01:49:55 PM
What kind of heads?  Combustion chamber size?
Title: found nice heads
Post by: quicksilver on March 21, 2007, 02:24:21 PM
they are from Arrow head technology i think, its something like that.
um, i cant remember but how small of chambers can i get?
Title: found nice heads
Post by: V8Demon on March 22, 2007, 09:29:35 AM
Never heard of that company.....Got any info on them?  I couldn't find anything.....The smallest chamber you can use on a flat-topped 302 AFAIK is the TFS heads.....
Title: found nice heads
Post by: quicksilver on March 22, 2007, 12:37:40 PM
i thought stock pistons on a SO motor couldnt use TFS heads?
i thought there valves would hit the pistons...
Title: found nice heads
Post by: thunderjet302 on March 22, 2007, 12:41:09 PM
Nope TFS heads are one of the few heads that work with the flat top pistons the SOs have. TurboCoupe50 uses those heads with a TFS stage 1 cam and flat tops with no problem.
Title: found nice heads
Post by: Tbird232ci on March 22, 2007, 05:42:44 PM
*sigh*
Title: found nice heads
Post by: quicksilver on March 23, 2007, 09:21:47 PM
the name is "Aero head"
the chambers are 69cc
130cc intake volume
3 angle valve job
mild head surface
7 degree locks
chromoly Retainers
1.90x1.60 s/s valves
.550" lift springs
all for $399
Title: found nice heads
Post by: 88sportcoupe on March 23, 2007, 10:10:53 PM
Looks like this is the place:
http://www.aeroheadracing.com/id8.html
Title: found nice heads
Post by: quicksilver on March 23, 2007, 10:52:47 PM
yep, thats it
Title: found nice heads
Post by: Bob on March 24, 2007, 09:06:27 AM
I think you should save the $400 and buy either gt-40p irons, or pick-up a set of used alum edelbrocks or tickflow heads.

I bought my edelbrocks used for $700 shipped and they were straight from the machine shop ready to go.

Also look what a 69cc cc is going to give you, under 8-1 compression

http://www.flatlanderracing.com/trwfordsb.html
Title: found nice heads
Post by: quicksilver on March 24, 2007, 09:35:36 PM
well, i have the SO motor so i cant have those kinds of heads...
cant i get the chambers milled though?
Title: found nice heads
Post by: Dogcharmer on March 25, 2007, 03:07:56 PM
I think they'd be decent heads on a supercharged engine.
Title: found nice heads
Post by: V8Demon on March 25, 2007, 09:31:00 PM
Quote
Also look what a 69cc cc is going to give you, under 8-1 compression


You're looking at the top piston.  The bottom ones labelled "85-87 HO" are more accurate and still on the low side (those have valve reliefs if they are tru HO pistons).....

69cc is a bigger chamber than stock and will lower CR.  Stock HO CR is determined with a 64 cc chamber.
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