Black6SpdTA 11-19-2003, 10:12 PM How good can a set of ported stock L98 heads flow? Any comparison to AFR's or TFS? Who is a good porter (such as Lloyd Elliot with LT1 heads), and how much?
What's the "gotta have" cam these days? For example: the CC306/GM847 is the big dog over on the LT1 board. Whats everyone having success with here? Using stock, but ported, plenum/runners/base? LT4 Hotcam?
Basically I'm looking for a good L98 (12's) buidup. Gotta be cheap though!
-Rippin
12Second3rdgen 11-19-2003, 10:20 PM Originally posted by Rippin92RS
How good can a set of ported stock L98 heads flow? Any comparison to AFR's or TFS? Who is a good porter (such as Lloyd Elliot with LT1 heads), and how much?
What's the "gotta have" cam these days? For example: the CC306/GM847 is the big dog over on the LT1 board. Whats everyone having success with here? Using stock, but ported, plenum/runners/base? LT4 Hotcam?
Basically I'm looking for a good L98 (12's) buidup. Gotta be cheap though!
-Rippin
Dont waste your money on L98 heads, you will have as much money into them as a set of vortec heads. As for a cam, if you can get the TPI to flow decently, something in the 230/236@.050 range should do nicely on a 112 LSA.
steve10358 11-20-2003, 08:09 AM Go get some TFS, AFR's, or even edelbrocks. Skip vortec, or L98, Scott Ermer is also selling his Mini ram, if you want it.
Steve
Black6SpdTA 11-20-2003, 03:22 PM Originally posted by steve10358
Go get some TFS, AFR's, or even edelbrocks. Skip vortec, or L98, Scott Ermer is also selling his Mini ram, if you want it.
Steve
Originally posted by Rippin92RS
Gotta be cheap though!
I'm looking for a really cheap build up. I want to stay away from Vortecs because I don't plan on staying TPI for very long (SuperRam!). Thanks for the input so far!
-Rippin
dj haf 11-20-2003, 03:26 PM superram? why not go with the miniram? it's a far better intake IMO
Black6SpdTA 11-20-2003, 03:34 PM Originally posted by dj haf
superram? why not go with the miniram? it's a far better intake IMO
I've read better things about the SR, and I don't think the MiniRam has a provision for EGR (we have emissions here), and it's more expensive.
Let's keep this thread to the heads/cam though, I'll start another one when the intake comes.
-Rippin
dj haf 11-20-2003, 05:33 PM ok... it's simple. go to the junk yard and find yourself an L98 vette... get those heads and have them ported. might not be AFRs (wont even come close), but it'll give you some hp for cheap
KnightRider350 11-20-2003, 06:30 PM Why go through all the work to tear down the engine and install heads when you're not getting that big of an upgrade out of them?
And correct me if I'm wrong, but if you put 350 heads on a 305, your compression will go straight to ****...
AutoRoc 11-20-2003, 07:25 PM Porting L98 alum Vette heads and having them fully reconditioned would be really dissapointing once you see the cost vs. power they put out. Lingenfelter always felt he could get 400-450hp out of them but god knows how much money and CNC work was involved.
What intake is going on it now? Stock TPI? Picking a head that will work well with Long tube runners AND also a MiniRam later down the road would be tough, same as the cam.
12Second3rdgen 11-20-2003, 07:29 PM Originally posted by dj haf
ok... it's simple. go to the junk yard and find yourself an L98 vette... get those heads and have them ported. might not be AFRs (wont even come close), but it'll give you some hp for cheap
No junkyard is going to give you a set of aluminum corvette heads for cheap, regardless if they flow aweful (as the aluminum L98 heads do) or not.
dj haf 11-20-2003, 07:37 PM i got a pair for 50 bucks at my local junk yard... but then someone stole them from my garage the next day... i think it was the guy i went to the junk yard with, lol
and the only reason i said it was cheap is cuz it's cheap for me. i know someone that ports heads for 200 bucks... i guess it wouldnt be worth it if you didnt have the connections. there's always ebay man! lol
aklim 11-20-2003, 07:46 PM Originally posted by AutoRoc
Porting L98 alum Vette heads and having them fully reconditioned would be really dissapointing once you see the cost vs. power they put out. Lingenfelter always felt he could get 400-450hp out of them but god knows how much money and CNC work was involved.
What intake is going on it now? Stock TPI? Picking a head that will work well with Long tube runners AND also a MiniRam later down the road would be tough, same as the cam.
You mean this (http://www.lingenfelter.com/lingenfelter/product.asp?dept%5Fid=7&pf%5Fid=9) ?
They do flow match each runner and basically do pretty much anything to it. About $2350 worth.
aklim 11-20-2003, 07:50 PM BTW, IMO, a set of TFS heads are probably decent door stops. I had a bad time with them and it cost me a new block. I wouldn't use them in my car unless I had them totally stripped down and rebuilt with quality parts. My vote goes for AFR
12Second3rdgen 11-20-2003, 09:16 PM Originally posted by aklim
BTW, IMO, a set of TFS heads are probably decent door stops. I had a bad time with them and it cost me a new block. I wouldn't use them in my car unless I had them totally stripped down and rebuilt with quality parts. My vote goes for AFR
The ****ty valvesprings that come on the TFS heads are what give them a bad name. I have two friends who have had valve springs break on their trick flow heads with mild hydraulic camshafts.
Black6SpdTA 11-20-2003, 10:00 PM So ported L98's aren't the way to go eh? Geuss I gotta save up for some AFR's then...only making $6.50/hour :cry:
KnightRider: I'm not putting anything on my 305, you know that! Lol, I found a complete L98 with harness/ecm/etc I might get.
-Rippin
insomniac 92z28 12-01-2003, 10:14 PM My ported L98 cast iron heads flow 248intake@.480"lift and 181exhaust@.500" and that is on the EGR passage cylinder (Better than Vortechs) They can flow. I will tell you how it runs in about a week. :D
AutoRoc 12-02-2003, 12:02 AM Originally posted by aklim
You mean this (http://www.lingenfelter.com/lingenfelter/product.asp?dept%5Fid=7&pf%5Fid=9) ?
They do flow match each runner and basically do pretty much anything to it. About $2350 worth.
Exactly what I mean.:) Could $2350 be better spent? That price and he can't even "paper roll" the ports. If anything that would be the cheapest AND simplest procedure to include in a worked head.
An AFR 180 or 190 would be a lot more worthwhile, all while still being emmisions legal...:(
aklim 12-02-2003, 12:26 AM Originally posted by 12Second3rdgen
The ****ty valvesprings that come on the TFS heads are what give them a bad name. I have two friends who have had valve springs break on their trick flow heads with mild hydraulic camshafts.
My valve guides on the passenger side had premature wear which was evident once the springs were off and the valves were rattling around. That caused the pushrod to wear out the guideplates and had some effect on the spring when the valves wobbled around.
aklim 12-02-2003, 12:29 AM Originally posted by AutoRoc
Exactly what I mean.:) Could $2350 be better spent? That price and he can't even "paper roll" the ports. If anything that would be the cheapest AND simplest procedure to include in a worked head.
An AFR 180 or 190 would be a lot more worthwhile, all while still being emmisions legal...:(
Dunno, when they do CNC work to match each runner, it gets spendy. Of course the hardwear on the heads are not cheap either.
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