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Old 04-22-2013, 10:52 PM   #1
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Heads

Hey guys I've been looking for the best cylinder heads for my car. Stock bottom end with a b303 cam in the mail. What do you think would be the best bolt on heads for this?
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Old 04-23-2013, 06:56 AM   #2
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Depends on what your goals are..... If you're staying N/A then go with a set of AFR's. check out the new renegade series.... The new 165's flow as good as the old 185's did. If you plan on going forced induction later, then Trick Flow has some really good choices.

---------- Post added at 04:56 AM ---------- Previous post was at 04:55 AM ----------

There's a fellow enthusiast on here who has a wealth of head knowledge on here, hopefully he'll chime in.
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Old 04-23-2013, 07:10 AM   #3
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Ya i plan on staying n/a. At least for this particular car. I looked into the afr heads and is there really difference between the emission and the none emission?
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Old 04-23-2013, 07:44 AM   #4
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The emissions has the EGR incorporated so you can maintain smog and hook our EGR cross tube to them and of course the non doesn't. All depends on what you need. Of you don't need the EGR then go without.
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Old 04-23-2013, 07:49 AM   #5
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Ok thanks cause its an 89 so when i actually get the heads it won't have to pass emissions
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Old 04-23-2013, 08:40 AM   #6
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Nice!
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Old 04-23-2013, 12:50 PM   #7
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Trick Flow Twisted Wedge. Make great power with what you have, plenty of "meat" on them for portwork if/when you ever decide to go bigger. They can and are routinely ported out to go onto 351 strokers and flow plenty for those setups.

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Old 04-23-2013, 01:39 PM   #8
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After reading Mustang mags for years, the Trick Flow always seemed like the best bang for your buck. On a completely stock 91 LX they put on a Trick Flow intake/Heads and it put down something like 330 RWHP. Huge improvement esp considering it was still NA obviously. Granted that is with an intake also, but I've never heard anyone complain about their heads .
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Old 04-23-2013, 01:45 PM   #9
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Edelbrock RPM heads!
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Old 04-23-2013, 02:57 PM   #10
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From what I've been reading is that AFR is the best but expensive but trick flow is probably the best overall since they're a little bit cheaper and get almost the same numbers
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Old 04-23-2013, 06:52 PM   #11
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I'm running Edelbrock top end with trickflow cam and I gained 125rwhp on dyno
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Old 04-23-2013, 10:14 PM   #12
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Quote:
Originally Posted by WhiteCobra94 View Post
Edelbrock RPM heads!
No, and this is coming from someone who had RPM heads on a 5.0 motor. AFR or TFS heads are better in every possible way and that is fact. The Edels are good but they would need to be priced like GT40X heads to make them worth it and even then...

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From what I've been reading is that AFR is the best but expensive but trick flow is probably the best overall since they're a little bit cheaper and get almost the same numbers
No, they are on the same level as far as quality. Figure Twedge heads in between the AFR 165 and 185s flow wise. IMHO they are the better heads especially because they give you a ton of room to grow later. And they aren't too big for a stock bottom end 302 either so they win.
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Old 04-23-2013, 10:19 PM   #13
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Are they ok to run with a b303 cam? And would i need hardened pushrods and different rockers?
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Old 04-23-2013, 10:30 PM   #14
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You ALWAYS need to clay but a B cam doesn't have much lift and the duration isn't too crazy so it SHOULD work. If not a TFS1 will for sure and they are $100 used on the corral.

Regardless of which heads you go with you will need to measure for correct pushrod length and buy new pushrods for your setup. Rockers, depends on what the heads you buy are setup for.
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Old 04-24-2013, 05:21 AM   #15
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Quote:
Originally Posted by scottydsntknow View Post

No, and this is coming from someone who had RPM heads on a 5.0 motor. AFR or TFS heads are better in every possible way and that is fact. The Edels are good but they would need to be priced like GT40X heads to make them worth it and even then...

No, they are on the same level as far as quality. Figure Twedge heads in between the AFR 165 and 185s flow wise. IMHO they are the better heads especially because they give you a ton of room to grow later. And they aren't too big for a stock bottom end 302 either so they win.
I highly disagree with that but everyone has different opinions
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Old 04-24-2013, 06:52 AM   #16
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I would recommend using the clay to check piston to valve clearance if you go with anything over a B303. Even if you go with the B and 1.7 roller rockers I'd still check the clearance. The 1.7's can change your lift slightly.
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Old 04-24-2013, 10:42 AM   #17
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I highly disagree with that but everyone has different opinions
True everyone does, but compare flow numbers, then talk to professional porters on what they could do with either head. I've been down this road. If you are going to get aluminums, find a low mileage set of Twedge heads on the Corral classifieds or something. I got the Edels because I DID get a screaming good deal on them, like GT40 iron price. I made 301/325 on a 302 bottom end. I would have made more with the Twedges though.

If the price is close, this is a no brainer decision the TFS or AFR vs the Edels. They are a distant 3rd to the other 2.
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Old 04-24-2013, 04:39 PM   #18
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What's the average RWHP on a 302 or 306 using Afrs or trick flows heads ?? It doesn't seem like a lot over edelbrock performer rpms? Just asking to see why people hate the edelbrocks so much I love my set I got a good deal on them so I don't really care it the flow numbers are better on the other two lol
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Old 04-24-2013, 04:58 PM   #19
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Originally Posted by DustyStang306 View Post
What's the average RWHP on a 302 or 306 using Afrs or trick flows heads ?? It doesn't seem like a lot over edelbrock performer rpms? Just asking to see why people hate the edelbrocks so much I love my set I got a good deal on them so I don't really care it the flow numbers are better on the other two lol
I've been looking online for dyno numbers and haven't found chart yet with all different heads, but I know I dynoed 125rwhp with my setup and it runs like a beast!!!!

---------- Post added at 03:58 PM ---------- Previous post was at 03:57 PM ----------

Quote:
Originally Posted by WhiteCobra94 View Post

I've been looking online for dyno numbers and haven't found chart yet with all different heads, but I know I dynoed 125rwhp with my setup and it runs like a beast!!!!
That's 125rwhp over stock base numbers of 185rwhp
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Old 04-24-2013, 05:55 PM   #20
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Quote:
Originally Posted by WhiteCobra94

I've been looking online for dyno numbers and haven't found chart yet with all different heads, but I know I dynoed 125rwhp with my setup and it runs like a beast!!!!

---------- Post added at 03:58 PM ---------- Previous post was at 03:57 PM ----------



That's 125rwhp over stock base numbers of 185rwhp
Ye alot of the dyno numbers are like 10 to 25 more rwhp then you your at 310rwhp right? An I got the same set up - the stage 2 TF cam I'm running a 306 with x303 cam an the performer II intake manifold so I'm hoping to be up there I may need 30# injectors but I hope to put down a little over 300rwhp so really why does everyone hate edelbrock haha I love my I need to get numbers soon man haha
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Old 04-24-2013, 06:31 PM   #21
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Yes I'm at 310rwhp and my car is a automatic with 4.11 rear and 3,000rpm stall torque converter

---------- Post added at 05:31 PM ---------- Previous post was at 05:27 PM ----------

Quote:
Originally Posted by DustyStang306 View Post

Ye alot of the dyno numbers are like 10 to 25 more rwhp then you your at 310rwhp right? An I got the same set up - the stage 2 TF cam I'm running a 306 with x303 cam an the performer II intake manifold so I'm hoping to be up there I may need 30# injectors but I hope to put down a little over 300rwhp so really why does everyone hate edelbrock haha I love my I need to get numbers soon man haha
Yea I started with 24lbs injectors and we stopped after the 1st pull my injectors maxed at 4,800 RPMs so I pumped up to 30s and that brings me into 7,800 RPMs before max!!
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Old 04-24-2013, 09:26 PM   #22
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Quote:
Originally Posted by DustyStang306 View Post
What's the average RWHP on a 302 or 306 using Afrs or trick flows heads ?? It doesn't seem like a lot over edelbrock performer rpms? Just asking to see why people hate the edelbrocks so much I love my set I got a good deal on them so I don't really care it the flow numbers are better on the other two lol
No, it isn't a lot but it is more and when the cost is about the same why would you go for less power, even 10 or 15whp? It is a proven fact again and again that the Edels do not flow as well or make as much power all things being equal.

Big reason people get the TW heads is that they are a great head that can grow with you. The Edels can't, they gain little to nothing from portwork and are too small for a stroker or 351. They are good for a 302 or 306 yes and like I said if you get a really good deal on them they are a great bang for the buck head and they will run hard and the car can make over 300whp with them.
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