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Old 12-06-2012, 09:52 AM   #1
GTOROB
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Cylinder head opinions needed

Was debating between doing a stroker shortblock or heads at income tax because I won't be able to afford both at once so I've pretty much decided to go with heads first.Then I can do a 418 instead of a 402 later.
I want to keep my FAST so LS3 heads are not an option for me.Also planning a Procharger F1-C after the stroker.

Wondering which would be best,TFS 235 or Mast 245?

Opinions?

Last edited by GTOROB; 12-06-2012 at 10:59 AM.
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Old 12-06-2012, 12:06 PM   #2
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mast will flow a little more but for the money I would do the trick flow and if I were you I would sell the fast and get the square port fast intake so you could run the ls3/7 head and for another option check out the prc285's, bad ass head for the money.
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Old 12-06-2012, 12:14 PM   #3
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I have AFR 230s and I absolutely love them. I heard they are good for higher displacement also.

Either way, it seems to me that with whatever heads you choose the cam choice is going to be critical to ensure you have great performance for the next 12 months until you can stroke it (and swap cams). I'd talk to Ed.
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Old 12-06-2012, 12:26 PM   #4
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If you're planning a procharger, save your money towards that. Heads + a blower is way overkill for the street.

Do the short block if you are dead set on boost later. Shit, those heads you are mentioning are more than half the cost of a shortblock right there. Do the 402, bolt your stock heads on for now, put a blower cam in for now, and bolt a procharger on next year.

Do heads later when you get bored of 600 rwhp lol.
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Old 12-06-2012, 01:37 PM   #5
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Quote:
Originally Posted by 3800Chris...View Post
I have AFR 230s and I absolutely love them. I heard they are good for higher displacement also.

Either way, it seems to me that with whatever heads you choose the cam choice is going to be critical to ensure you have great performance for the next 12 months until you can stroke it (and swap cams). I'd talk to Ed.

With AFR you don't need to buy rockers,right?
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Old 12-06-2012, 01:48 PM   #6
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Originally Posted by mchicia1...View Post
If you're planning a procharger, save your money towards that. Heads + a blower is way overkill for the street.

Do the short block if you are dead set on boost later. Shit, those heads you are mentioning are more than half the cost of a shortblock right there. Do the 402, bolt your stock heads on for now, put a blower cam in for now, and bolt a procharger on next year.

Do heads later when you get bored of 600 rwhp lol.

It is over kill,but you never know I could run into a Super Snake one of these days so I'd be prepared.LOL
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Old 12-06-2012, 02:35 PM   #7
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Originally Posted by boosted99...View Post
mast will flow a little more but for the money I would do the trick flow and if I were you I would sell the fast and get the square port fast intake so you could run the ls3/7 head and for another option check out the prc285's, bad ass head for the money.

Those PRC 285's are used on motors with 440+ cubes so not an option.
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Old 12-06-2012, 06:17 PM   #8
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Old 12-06-2012, 06:20 PM   #9
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I agree with the previous post for doing the block if you plan to boost, OP. it's better to build up to handle it now, that way later on you can just slap it on, tune it and "go baby go".


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Old 12-06-2012, 06:38 PM   #10
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Quote:
Originally Posted by Ehrgeiz X...View Post
I agree with the previous post for doing the block if you plan to boost, OP. it's better to build up to handle it now, that way later on you can just slap it on, tune it and "go baby go".


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A forged stroker is certain,just not at this time.....heads first.
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Old 12-06-2012, 11:11 PM   #11
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Quote:
Originally Posted by GTOROB...View Post
A forged stroker is certain,just not at this time.....heads first.

i dont know who told you that the prc285s are for 440 and bigger I used them on my 431 and picked up nicely over the tfs235s and if your going to do a 418 I also know a car that uses them on his 418 but hey its your build
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Old 12-07-2012, 01:22 AM   #12
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Originally Posted by boosted99...View Post
i dont know who told you that the prc285s are for 440 and bigger I used them on my 431 and picked up nicely over the tfs235s and if your going to do a 418 I also know a car that uses them on his 418 but hey its your build

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Old 12-07-2012, 02:39 AM   #13
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Not that I'm trying to sway your opinion, OP... But again, doing the block first could set you up for success I'm the long run. Figure it this way... You forge your bottom end and build up the engine to handle the high horsepower and boost you'll be putting I through later on, and she'll be virtually bulletproof for the time being. So there's my second $.02. Anyways, I'll be watching for your ultimate decision, OP.


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Old 12-07-2012, 02:59 AM   #14
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Quote:
Originally Posted by GTOROB...View Post
Was debating between doing a stroker shortblock or heads at income tax because I won't be able to afford both at once so I've pretty much decided to go with heads first.Then I can do a 418 instead of a 402 later.
I want to keep my FAST so LS3 heads are not an option for me.Also planning a Procharger F1-C after the stroker.

Wondering which would be best,TFS 235 or Mast 245?

Opinions?

From what I've seen, MAST heads are one of the best. If you plan on more cubes you will want a bigger head, so go for the MAST 245's.

But like posted, aftermarket heads are probably half the cost of a short block, thats what makes the Ls3 swap attractive. For less than the price of one aftermarket head you can get both heads that flow like aftermarket heads, bigger injectors, and an intake that is on par with the FAST right from GM. Selling the 243's and FAST, you might be able to pick up the Ls3 head swap with no out of pocket cash. Now all your money saved up for heads can be put toward the 418 instead.
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Old 12-07-2012, 03:26 AM   #15
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Quote:
Originally Posted by Ehrgeiz X...View Post
Not that I'm trying to sway your opinion, OP... But again, doing the block first could set you up for success I'm the long run. Figure it this way... You forge your bottom end and build up the engine to handle the high horsepower and boost you'll be putting I through later on, and she'll be virtually bulletproof for the time being. So there's my second $.02. Anyways, I'll be watching for your ultimate decision, OP.


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I won't be able to afford the 418 stroker so that's why I'm doing heads first.I could possibly do a 402 since I could use my block,but I want to go a bit bigger on the chance that I could decide to stay NA.
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Old 12-07-2012, 03:32 AM   #16
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Originally Posted by 87LC2...View Post
From what I've seen, MAST heads are one of the best. If you plan on more cubes you will want a bigger head, so go for the MAST 245's.

But like posted, aftermarket heads are probably half the cost of a short block, thats what makes the Ls3 swap attractive. For less than the price of one aftermarket head you can get both heads that flow like aftermarket heads, bigger injectors, and an intake that is on par with the FAST right from GM. Selling the 243's and FAST, you might be able to pick up the Ls3 head swap with no out of pocket cash. Now all your money saved up for heads can be put toward the 418 instead.

From what I've seen which I'll admit isn't much, the shop I deal with hasn't had good results when adding LS3 heads to vehicles they've done.When I add heads to my current setup I want to see good results and not be disappointed since I gotta wait another year for the shortblock.

Edit:The results I'm referring to was on stock cubes.

Last edited by GTOROB; 12-07-2012 at 03:43 AM.
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Old 12-07-2012, 03:41 AM   #17
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That's why I went with the MAST from your two choices. I haven't heard anything bad, except the price tag.
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Old 12-07-2012, 03:46 AM   #18
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Youre talking about using the same head for stock cubes now, then a stroker, and then a stoker with a blower. The same head will not be optimal for all three situations. Just keep saving and do the damn short block first.
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Old 12-07-2012, 05:22 AM   #19
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Youre talking about using the same head for stock cubes now, then a stroker, and then a stoker with a blower. The same head will not be optimal for all three situations. Just keep saving and do the damn short block first.

Agree.

Trust me, 600 rwhp is about all you want for the street and you will get that with stock heads and a 402 with a procharger. Probably even more. Think about the money you will need for the fuel system too to support all that.
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Old 12-07-2012, 06:53 AM   #20
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Mast heads are supposedly really awesome but bang for the $$$ TFS or AFR...they will both perform great...you can use roller tipped or stock rockers but TFS does advise roller rockers pretty emphatically...they will be within a few hp/tq of each other usually
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Old 12-07-2012, 06:54 AM   #21
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Im still running 243's but plan on a straight-up head swap this summer
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Old 12-07-2012, 06:59 AM   #22
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Quote:
Originally Posted by mike27408...View Post
Mast heads are supposedly really awesome but bang for the $$$ TFS or AFR...they will both perform great...you can use roller tipped or stock rockers but TFS does advise roller rockers pretty emphatically...they will be within a few hp/tq of each other usually

That was the dealbraker for me with the TFS. All the affordable roller tipped rockers have issues . Broken YTs are still popping up even after the "fix".
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Old 12-07-2012, 07:03 AM   #23
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Originally Posted by GTOROB...View Post
I won't be able to afford the 418 stroker so that's why I'm doing heads first.I could possibly do a 402 since I could use my block,but I want to go a bit bigger on the chance that I could decide to stay NA.

TEA TFS 235's will work fine on a 402/416/418 and will be damn fine when/if you add a blower...Bigger isnt always better..stay with a 402 max...my 418" isnt much better than most 402's ...only good thing is 4.080" bore is friendly to LS3 type heads but that having you change alot of stuff...
Mayhem Motorsports just did a 390" motor(like .030" or .060" over iron 6.0 block with a 3.80" stroke crank and a single turbo it was 1005 rwhp and some stupid torque)with Trick flows and an LS6 intake
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Old 12-07-2012, 07:06 AM   #24
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yeah...AFR 230 or larger and use trunion upgraded stockers will probably be very cost effective and will do just fine NA or ProCharged...If i was him i wouldnt even waste the $$ on a blower beacuse hes looking at more $$ for a lonnies fuel sytem to feed a cammed/heads/blown stroker....my current hp/tq is too much for the street as is...
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Old 12-07-2012, 07:08 AM   #25
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Originally Posted by mchicia1...View Post
That was the dealbraker for me with the TFS. All the affordable roller tipped rockers have issues . Broken YTs are still popping up even after the "fix".

Im running YT's but they were a part number from an older LS1 design that is nothing like the ultra -lights that keep popping up broken...done good so far
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Old 12-07-2012, 07:49 AM   #26
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Old 12-07-2012, 08:14 AM   #27
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Gotta few months to decide.Thanks for the input guys!
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Old 12-07-2012, 08:14 AM   #28
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are those Mast heads Ed...
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Old 12-07-2012, 11:12 AM   #29
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Quality is not expensive.

IT'S PRICELESS

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Old 12-08-2012, 06:11 AM   #30
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are those Mast heads Ed...

Yes Mike -
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