I Need Help With Cylinder Heads!!!!

B

bada$$notch

New Member

Aug 11, 2005

20

0

1

Willow Street Pa

Aug 11, 2005

#1

• Aug 11, 2005

• #1

I am in a bind, right now i have a 306 in an 89 lx notchback. i have the roush 200 heads on my motor with trick flow stage 2 cam and other bolt ons. i have been seeing friends of mine with less work going just as fast. i think its my heads. they might be a bit of overkill. i was looking for either afr185's or trick flow twisted heads, but i cant find anybody who has them on a 302. everyone ive seen in magazines all are stokers or non-naturally aspirated cars. i dont want to go and spend the money on new heads that arent gonna make me go faster. Right now at best ive went 13.02 at 105, thats not good enough for me, i want those damn 12's please help, any suggestions or comments please let me know. thanx

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

6

79

Charlotte, NC

Aug 11, 2005

#2

• Aug 11, 2005

• #2

What's the rest of your set up? You haven't provided enough info for anyone to help much. Post up a signature line....

 

1991GreeNLX

New Member

Jul 2, 2004

129

0

0

Houston TX

Aug 11, 2005

#3

• Aug 11, 2005

• #3

well post up the rest of your mods they may have steeper "GEAR" then you do and you dont know about it or they arent telling you what actually done internally or sorry to say maybe the driver

 

Black 93 Fox

Active Member

Jun 1, 2003

1,995

0

49

Vancouver,Washington

Aug 11, 2005

#4

• Aug 11, 2005

• #4

I have them on my 306 mods in sig. I havent dynoed the car yet still being broken in but I am almost postitive that it will run 12's.

 

B

bada$$notch

New Member

Aug 11, 2005

20

0

1

Willow Street Pa

Aug 12, 2005

#5

• Aug 12, 2005

• #5

its a 306 with the roush heads and stage 2 cam 1.6 roller rockers trick flow track heat intake 70mm throttle body and egr plate cold air intake close ratio trans 3.73's factory bottom end just all brand new.

 

nosmatt

Founding Member

Oct 13, 2000

1,356

0

37

Bass Lake, Ca

Aug 12, 2005

#6

• Aug 12, 2005

• #6

FOR LESS money, those heads could be sent to someone like.........XSR for some cyl head work. new springs, a deck cleanup, and full porting on both intake, and exhuast..... figger in the neighborhood of 700-800 for this work, and they will KILL a box stock afr/tfs head, and will cost ya 300-400 less.

those heads, when worked by a pro, can yield excellent results.

thats my buck fitty

ohh, and the wrong cam makes any combo perform like crap, guys that go fast, have matched combos.


good luck

 

QDRHRSE

New Member

Dec 31, 2002

1,590

0

0

Palmdale, CA

Aug 12, 2005

#7

• Aug 12, 2005

• #7

I've used those heads before in a carbed set up. On a 302 you need to make riduculous rpm to get them to work well. The problem is the ports are so big that port velocity suffers. Rather than getting new heads a power adder would work great with those heads. Just to be clear- the Roush 200 is the same as a world products Dart Windsor.....right? Anyway, a little nitrous or a little boost will make those heads work great. If you still want heads, get some TFS twisted wedge heads. Those will work perfectly with your cam and intake...almost like they were designed for a 306, Track Heat intake and stage 2 cam!

 

QDRHRSE

New Member

Dec 31, 2002

1,590

0

0

Palmdale, CA

Aug 12, 2005

#8

• Aug 12, 2005

• #8

I've used those heads before in a carbed set up. On a 302 you need to make riduculous rpm to get them to work well. The problem is the ports are so big that port velocity suffers. Rather than getting new heads a power adder would work great with those heads. Just to be clear- the Roush 200 is the same as a world products Dart Windsor.....right? Anyway, a little nitrous or a little boost will make those heads work great. If you still want heads, get some TFS twisted wedge heads. Those will work perfectly with your cam and intake...almost like they were designed for a 306, Track Heat intake and stage 2 cam!

 

QDRHRSE

New Member

Dec 31, 2002

1,590

0

0

Palmdale, CA

Aug 12, 2005

#9

• Aug 12, 2005

• #9

I've used those heads before in a carbed set up. On a 302 you need to make riduculous rpm to get them to work well. The problem is the ports are so big that port velocity suffers. Rather than getting new heads a power adder would work great with those heads. Just to be clear- the Roush 200 is the same as a world products Dart Windsor.....right? Anyway, a little nitrous or a little boost will make those heads work great. If you still want heads, get some TFS twisted wedge heads. Those will work perfectly with your cam and intake...almost like they were designed for a 306, Track Heat intake and stage 2 cam!

 

C

clarkjr

Founding Member

Oct 22, 2000

716

1

19

NC

Aug 12, 2005

#10

• Aug 12, 2005

• #10

nosmatt said:

FOR LESS money, those heads could be sent to someone like.........XSR for some cyl head work. new springs, a deck cleanup, and full porting on both intake, and exhuast..... figger in the neighborhood of 700-800 for this work, and they will KILL a box stock afr/tfs head, and will cost ya 300-400 less.

those heads, when worked by a pro, can yield excellent results.

thats my buck fitty

ohh, and the wrong cam makes any combo perform like crap, guys that go fast, have matched combos.


good luck

Click to expand...

Those heads are decent but not that great out of the box. If you can have them cleaned up by someone, it may be worth it.

 

B

bada$$notch

New Member

Aug 11, 2005

20

0

1

Willow Street Pa

Aug 12, 2005

#11

• Aug 12, 2005

• #11

The combustion chamber in my heads are 64cc's would it be worth my while to send them out to a machine shop and have them decked just to up my compression ratio? i cause im sure my ratio is kinda low with that big of a combustion chamber size. any ideas, let me know, or if anybody knows where i can find out. thanx guys