C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Looking to Buy New Heads

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Old Mar 29, 2007 | 05:49 PM
  #1  
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Default Looking to Buy New Heads

I'm in the market and am zeroing in on Trick Flow 195s (TFS-30400010)for my 96 LT1. Please, don't suggest AFR's, I don't want to start yet another cylinder head war.

Is anyone running these and, if so, what are your impressions;

Did you install them out of the box or modified (like decking them to retain stock CR)?

Where'd you get 'em? I see Summit has them for about $1,400

Any feedback will be appreciated.

Thanks,

Jake
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Old Mar 29, 2007 | 06:18 PM
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Originally Posted by JAKE
I'm in the market and am zeroing in on Trick Flow 195s (TFS-30400010)for my 96 LT1. Please, don't suggest AFR's, I don't want to start yet another cylinder head war.

Is anyone running these and, if so, what are your impressions;

Did you install them out of the box or modified (like decking them to retain stock CR)?

Where'd you get 'em? I see Summit has them for about $1,400

Any feedback will be appreciated.

Thanks,

Jake
Jake

You are in Desota and I'm in the Flowermound area. Your welcome to stop by and look at my flow sheets of Trick Flows vs ported heads or I can e-mail some sheets to you. You can even drive my car if you wish to feel how they work in a larger displacement car.

Was personally disappointed with the flow numbers when the heads were received with upgraded 2.05 valves and a specified chamber size. However, after porting and putting larger 2.08 valves for my added cubic inches, I'm very happy with the heads. Expecially since they run very cool in our climate as compared to others I've owned. Just took some tweaking but they were a little weak as received.

On a stock block I would go with stock ported heads in a heartbeat expecially the LT4 castings which probably still remain the best stock block choice if ported unless you plan on something more radical.
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Old Mar 30, 2007 | 04:08 PM
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Originally Posted by d48mclain
Jake

You are in Desota and I'm in the Flowermound area. Your welcome to stop by and look at my flow sheets of Trick Flows vs ported heads or I can e-mail some sheets to you. You can even drive my car if you wish to feel how they work in a larger displacement car.

Was personally disappointed with the flow numbers when the heads were received with upgraded 2.05 valves and a specified chamber size. However, after porting and putting larger 2.08 valves for my added cubic inches, I'm very happy with the heads. Expecially since they run very cool in our climate as compared to others I've owned. Just took some tweaking but they were a little weak as received.

On a stock block I would go with stock ported heads in a heartbeat expecially the LT4 castings which probably still remain the best stock block choice if ported unless you plan on something more radical.

Thanks for the offer, but unfortunately I'm in Merrillville, Indiana now, knee deep in a basement finishing project for my niece. Framing, insulation, surround sound wiring, recessed lights, ceiling fans, carpet, on and on.

I'm only looking for improved street performance so I can run with my nephew's 2005 LS2 GTO after I change my heads and camshaft.

I'd REALLY like to see the flow numbers. If you can email them to me I'd really appreciate it. jcameron266@sbcglobal.net

Thanks,

Jake
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Old Mar 30, 2007 | 05:01 PM
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I just came across another option; TPIS' fully ported stock castings LT1heads.

Their site shows the following flow numbers of the stock heads; .100/.600

STOCK: 58, 115, 177, 214, 214, 214

PORTED: 70, 145, 203, 241, 265, 277 (187 cc intake port volume)

They're going for $1,250 Exchange OR $1,950 outright.

Another factor is the chamber size remains stock to maintain CR.

Anyone have any experience with these?

Feedback will be appreciated.

Jake
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Old Mar 30, 2007 | 06:49 PM
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I'm not sure if you've heard of Loyd Elliot(spelling probably wrong) also reworks LT1/4 heads and gets very good reviews from the people on z28.com, I think. One of the bigger Camaro sites has a lot of info about several guys that do very good port work for the cost. Sorry I can't remember the site I was on a few weeks ago, if I find it again I'll reply back.
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Old Mar 30, 2007 | 06:54 PM
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www.eportworks.com

Lloyd has done great work. I've heard nothing but positives about his work and service.
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Old Mar 31, 2007 | 07:08 AM
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Originally Posted by DeBaGo
www.eportworks.com

Lloyd has done great work. I've heard nothing but positives about his work and service.
Jake

I'll e-mail you the flow sheets of the Trick Flow heads as they were received just after I send this. Lloyd currently is the man regarding stock castings and just lives down the road in Red Oak. If you make it back, I can even introduce you to him. Super nice guy. The only problem is he has so much work that it's a six week process to get your heads back.

Not sure if I have any of his latest flow sheets but I'll send you the most recent that I have but right now he really is the best that I know of on stock LT1 castings.

Also.......what are you doing for cam?? Have a new LE3 cam sitting in my garage that just isn't quite right for my combo. It's designed for the intake/exhaust flow ratio of how most stock casting come out and my heads are pretty heavily tweaked resulting in a 74% ration. As such, I don't need hardly any split at all.

Plugging in the numbers into the professional version of Performance Trends (you got to use the more expensive version to be close to accurate) it says both my current cam and this cam are close but not enough for me to warrant changing them.

If you don't mind a little....rump de rump, (it's on a 110) the car will make power with this cam and LE heads.
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Old Mar 31, 2007 | 07:21 AM
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Originally Posted by JAKE
I'm only looking for improved street performance so I can run with my nephew's 2005 LS2 GTO after I change my heads and camshaft.



Thanks,

Jake
Not trying to anger the GTO crowd but last year I saw the GTO club run at a local 1/8th mile track. You probably can beat 90% of them the way you are right now. Out of 20 cars the fastest ran a 8.3 with most in the high 8's to low 9's.

Really was expecting better.
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Old Apr 1, 2007 | 04:36 AM
  #9  
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Originally Posted by d48mclain
Not trying to anger the GTO crowd but last year I saw the GTO club run at a local 1/8th mile track. You probably can beat 90% of them the way you are right now. Out of 20 cars the fastest ran a 8.3 with most in the high 8's to low 9's.

Really was expecting better.
Great news; I was hoping to get some "words of encouragement".

I've got 10 years of technology to make up, so I had PCMFORLESS burn my PCM and I just ordered a set of CompCams 1.6 RRs (1016-16 part#).

With a set of better flowing heads and a mild cam - something on the order of the HotCam (but probably a custom CompCams grind), I'm figuring he won't even be close enough to read my license plate. LOL

Jake
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Old Apr 1, 2007 | 04:49 AM
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Originally Posted by d48mclain
Jake

I'll e-mail you the flow sheets of the Trick Flow heads as they were received just after I send this. Lloyd currently is the man regarding stock castings and just lives down the road in Red Oak. If you make it back, I can even introduce you to him. Super nice guy. The only problem is he has so much work that it's a six week process to get your heads back.

Not sure if I have any of his latest flow sheets but I'll send you the most recent that I have but right now he really is the best that I know of on stock LT1 castings.

Also.......what are you doing for cam?? Have a new LE3 cam sitting in my garage that just isn't quite right for my combo. It's designed for the intake/exhaust flow ratio of how most stock casting come out and my heads are pretty heavily tweaked resulting in a 74% ration. As such, I don't need hardly any split at all.

Plugging in the numbers into the professional version of Performance Trends (you got to use the more expensive version to be close to accurate) it says both my current cam and this cam are close but not enough for me to warrant changing them.

If you don't mind a little....rump de rump, (it's on a 110) the car will make power with this cam and LE heads.

Thanks for the offer but I'll get one on the order of 218/224 or 212/218@ .050 with lift around .550. I'll keep the LSA on 112/114 to keep check on the overlap and smooth out the idle a tad. If I can get the intake to exhaust flow ratio above 70% I'll go single pattern.

I'd prefer to keep port volume around 190 ccs or less to keep the velocity up.

At my "advanced" age, I like smooth and quiet so FlowMasters and long tubes aren't on my list of things to buy.

Unfortunately I can't wait several weeks to have to work completed. My 86 was beat-up on by an 18 wheeler late last year and my Suzuki 1100F is in the shop with clutch problems. So I need to keep the LT1 up and running or I'll be stuck w/o transportation.

BTW, I've got the high-end PT too, I've just got to call them and get a new unlocking code after re-installing XP.

Thanks again for all your help.

Jake
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Old Apr 1, 2007 | 11:22 AM
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Originally Posted by JAKE
I just came across another option; TPIS' fully ported stock castings LT1heads.

Their site shows the following flow numbers of the stock heads; .100/.600

STOCK: 58, 115, 177, 214, 214, 214

PORTED: 70, 145, 203, 241, 265, 277 (187 cc intake port volume)

They're going for $1,250 Exchange OR $1,950 outright.

Another factor is the chamber size remains stock to maintain CR.

Anyone have any experience with these?

Feedback will be appreciated.

Jake
I guarantee you LE's numbers would beat those, as do the numbers on my ported stock castings w/ 2.02-1.6. I'd go with LE.
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