Well, I'm almost at a wall here. Trying to decide between three different heads, but I am 99% sure none will work with the stock base. I hear that they wont work with an aftermarket base like the Edelbrock or Accel anyway. I figure that is kind of pointless for what should be a 450+hp engine, to try that with an LTR. I was thinking of the Stealth Ram route when it came out, but it needs to be modified as well, still too small of ports. Either way, I'd need to weld the intake. Only option left is the Miniram, and we all know how much that puppy costs. I know it works, no question, but it seems like alot to spend. There's also the single plane EFI route, but I dont really like the look. Still thinking about it however.

So... I figure my next change will be the heads. That means I have to modify my siamesed base, get a Stealth Ram and have it modified to fit; or get a Miniram which I really dont want to do. I'll have to call about cost of welding my intake base up and machined. Looks like that in any case, I'll be doing that to whatever intake that I use. I can deal with the extra cost involved in modifying the stock TPI base, and then not use that base later because I'm not happy with it, if anyone is interested in seeing some results.

 

if the miniram is a option but the cost isnt then talk to john over at www.lt1intake.com...its VERY similar the the mini at about a 1/3 the cost....400 bucks he supplies the manifold does the mods tot he distributor hole...go check it out....

i voted for the miniram/lt1

 

I'm sure he's well aware of this. If the heads he's planning on using are going to need the intake welded up I doubt an LT1 intake would work without welding the area around the ports.

 

WTF heads are you thinkin ? Brodix ?

Single plane EFI would be my bet if the HSR won't Cut it.

Wich car is this for ?

Who cares about the Look.

Your Sure the HSR won't Cover the ports ? Its got some pretty large ports itself, ive got a pictue here I think w Fp 1296 Layed out over it.

okay well speedtoys is down right now so Ill post that picture later.

 

I DO care about the look, thats why I am not considering the LT1. I think the extra hoses and remote mount thermostat just wouldnt look very good. And I hate braided stuff. Partly why I dont really like the single plane idea either, but I think the vehicle owner is partial to the carbed look. So much for the MAF in that case LOL!

Bort, what car? The GP. Seen it before? I hear the Stealth ram will not cover a 1206 gasket, that would be a problem.

 

Looks like it covers it to me, Barely.

I really think the HSR will be your answer here bucko

If your exceeding 300 cfm Per runner... well haha

 

I'm not totally sure, but its worth checking, the lower baseplate for the stealthram is modified from weiand's 2 piece tunnel ram. That being said, the standard base with unmachined injector bosses might actually provide a better seal to the larger gasket, the only down side is that you will have to have the injector holes drilled. The nice thing about that base is that its not 'scalloped' out by the injectors, its straight across. Check out Holley's website under this link:
http://www.holley.com/HiOctn/ProdLin...AMSM/5954.html
This is what the stealthram was prototyped with, so the plenum should bolt right up, and if you have the intake machined to match the fuel rails, you should be good. The only other option is maybe an LT4 intake, or the good 'ol single plane. Just my 2 cents.....

 

Hey Ian,,, do you still have the picture I sent you with the 1206 opening marked on the intake? That's a better pic to post if you do. There's only about 1/16" of material (IIRC) and I wouldn't want to take a risk that would seal properly - that is IF the heads were fully taken out to the 1206 opening.

I was running an optimized length SLP system and while I liked it a good bit I took a chance and switched to a StealthRam --- the car is more balanced now. Still has enough grunt to get the car moving on out - much more consistant launches - and pulls like crazy from any speed / RPM you hammer the throttle (unlike the TPI).

 

"Convert to TBI, jack it up like a mother and roast some rustnags!!!!"

Funny Ed.

 

 

Yea... thats not enough material to work with.

 

Go carb, silly

 

I dunno Christian, The 1206 is a big gasket.

It how big are the ports on this head ?

if the HSR wont cut it, I think your only options are Single plane EFI or Carb.

 

the stealth ram wont go to a 1206 without large modifications

meaning:

welding
milling
porting
milling again

What heads do u plan on using? this is going to help, at least me, help you realize what kinda options you have

PM me if you dont want to say it here

 

I was actually going to use some AFR's, that was the original plan with the car years ago. Thing is, I've heard of some problems lately and the guy who did all my other engine work hates them. He suggested the Track 1's, and thats where the problem starts. If I did go with the AFR's I'd use the 210's, but there again I'll run into a problem. They do have a 1205 version available, but I'm failing to see the point of going with a smaller gasket

I'm a little less unhappy with the current heads though, ran 103.3 at the track last weekend. I was looking for more like 112+ though, that is a ways off from 103. Kinda why I am looking at swapping heads.

 

Why do you need such a big runner port head like the 210?

11sec91Z runs almost 124 mph in the 1/4 using AFR 190 or 195 heads according to his posts, so these heads should be more than adequate for your mph goals.

Just a thought.

Dave

 

Q. What do all the "big kids" run?

A. Single plane efi.

end of story

 

Unusual. Take a look at what most people are running with those heads. I'd rather not be in the group that is trying to get to where one person has gotten to. With my luck... I'd be one of those people too.

Pablo... funny guy! I dunno, its a thought, but still not sure.

 

Instead of using a "hogged out head" for air volume, there are other ways to make power. "Air Velocity" is a concept that works pretty well! What's the use of having a head that's hogged out when you can make the same ammount of power with a set of heads that have high velocity. Good example, Vortec heads. Vortec/fastburn, Edelbrock E-TEC, and LT-4 heads are high velocity, not high volume heads. With a little porting, those heads flow well and still maintain great air velocity. AFR's flow decent and will accept damn near any style intake manifold. I just dont see the use in having butchered heads that need to have an intake manifold fabricated for them, unless you're talking about a 1,000+HP Big block that needs a custom intake.

I would look for a head that flows good numbers with 200cc ports or smaller. Then, you can use pretty much any intake you want with no problems. Just my $.02

Mike (1bad91Z)

 

Going smaller isnt really in my thoughts, for more than a few reasons let alone the guy who does my machine work told me the same thing. And the few people I know who are running on the AFR 190's wish they had gotten the 210's instead.

I think port velocity is overrated. I have LOTS of port velocity right now, and its not helping.

 

Of course velocity is overrated. Velocity through a coffee stirrer is very high, but isn't going to help your motor much.

The trick is to get high flow numbers and still maintian high velocity. This is where the AFRs seem to do very well.

 

My vote`s for the MR if you don`t go single plane.Will screw right on to whatever head you choose,with the right part# you can start off with a 1205 and then easily port to a 1206 for 70 bucks at TPIS(just had this done,was feeding my 1206 head with a 1205 intake)and shouldn`t hinder power no matter if the engine makes 450 or 1000 HP.I look at mine as an investment as I should never have to replace it b/c it`s a restriction.

Don`t forget there`s no EGR

Save $ and make your own fuel lines to connect it to the factory lines. Their fuel line kit makes it a bolt- on but adds $300

 

Do the MR and be done with it. I have the siamesed base right now and plan to ditch it for a MR when the money is there... Wouldn't mind going to Track 1s as well..... My friend's Malibu (stroked 400, TH400, POS 2500 stall, 3.42s, DRs....) traps 117 mph with his Track 1s (out of the box too).

Also, I've been to TPIS many times - quite recently even. They likely have (or will have in the future) a few "blemished" manifolds lying around that you can get for a bit cheaper.... Ask for Jim.

 

I am with Matt on this one. I live around TPIS as well and the ones that we saw that were blemished were not bad at all you will never see the problems unless you look really close. I am just going to run with the TPI until I get the money.