95FbFormula

iTrader: (25)

not considering that you need the LT4 intake which heads would be better to use a set of LT4 with a nice polish job, 1.6RR, and comp behive springs. Or to get the Stock heads P&P'd and the same RR and spring set-up. also using similar valves.

Shackleford

iTrader: (12)

Pp Lt4 > Pp Lt1

95FbFormula

iTrader: (25)

I Was looking into getting a set of stock LT4 heads and have just a polish job done on them if posible and run them with a custom came set-up. and other bolt-ons.

The LT1 That Could

iTrader: (3)

If you're gonna have headwork done anyways, just have your stock castings ported....by the time you buy the LT4 Heads, you could have had your LT1s Ported...

btw, www.eportworks.com

95FbFormula

iTrader: (25)

Well I can actually get the LT4 heads from summit for about $1400 and I am only 40 min away so no sipping cost. But If I go toward using my stock heads I am looking into an LE2 H/C set-up with stock bottom end or 355 I havent decied If i am going to pull the motor yet. The Heads are already off and the rad and ac condenser and lines are out so it wouldnt be to much of a job but I really dont have that bad of miles only about 75k. and looks pretty good.

93-vr4+transam

iTrader: (1)

well If your going to spend the 1400 on heads, why not go with the eldebrock heads. and then you can use your LT1 intake. or find a nice set of used afr heads. and really kick some azz...

streetwarrior96

^^^^ Those heads are crapy... not that much better than stock. If ya have the money and patience get the LT-4 heads and have them worked on by Advanced Inductions, Llyod Elliot, or Port Pro's. If ya don't just stick with your LT1 heads and have those worked on. Those 3 guys I mention have proven numbers on their products. As for edelbrock do a search here and you will find out. Or you can get some trick flows and have those worked on also

Captainofiron

iTrader: (1)

Well 95FbFormula I applaud you for thinking ahead.

I say get some LT4 heads and then get someone to port them out, that would be your best bet, like stated above give Lloyd elliot a call.

The LT4 heads are a evolution of the LT1 design, so therefore they are better, they will flow more if all else is equal,
Check it out LT4 specs
http://www.carcraft.com/techarticles...se/index5.html
Check out the LT1 specs
http://www.carcraft.com/techarticles...se/index8.html

I couldnt find any flow charts for the Edelbrock LT1 head, but I dont think it should be to far off of the Vortec heads in that database

streetwarrior96

here is a thread that has an LT4 setup with the Llyod Elliot Stage 3 stuff.. good numbers if ya ask me

https://ls1tech.com/forums/showthrea...&highlight=lt4..

94z28L

iTrader: (4)

the edelbrock heads are dog **** and a waste of money, nothing there much better than stock other than the springs and the ports are hardly even opened up on em, if you're gonna put out that kinda coin just go straight for some AFR's

The LT1 That Could

iTrader: (3)

AFRs are still a crap head for LT1s, yes they make great products for Small Block guys, but their LT1s are not that great.

Formula350

iTrader: (3)

I thought you get free-shipping in you're in Summit's green area on their map lol Which is ALOT of places.

$1400 for heads is kinda much in my opinion. I'd get the stock heads P&Ped, with a cam that compliments it well. You might as well get 2.02/1.60's as well (I have some stainless ones if you're interested heh) to go with the 1.6s. If you end up doing something with the bottom end, get it balanced

1997bird

iTrader: (2)

I have a set of AFR 195 cc Competition ported heads that I put a set of Ferrea valves into and had the valve pocket's blended into the valve seats. They flow 291 cfm on the intake side @ .600" lift and the exhaust flows 221 cfm @ .700 lift. I wouldn't call them crap heads. They have better flow number's than Edlecrap, Trick Flow, ported LT-1's, and most ported LT-4's from what research I have found on the internet. The few LT-4 heads that I found with better number's still have the disadvantage of thin deck surfaces that are prone to cracking.

1997bird

iTrader: (2)

The largest valve size's you want to use in a stock head is 2.00" int and 1.56" exh. Anything bigger than that and you shroud the valves in that small combution chamber. You can buy a set of 2.02/1.6 and have the machine shop grind them down to the right size for around $7 a valve.

96capricemgr

iTrader: (1)

But what does it run? Even most AFR believers will tell you the 195 and smaller SUCK. Flow is not the measure of how good a head it, it is just something relatively simple to measure that lets folks compare without assembling a whole motor and running a car.

IMO especially on a 350/355 ported LT1 castings are the one good choice, the exception I will allow would be Trickflows to drop compression for boost.

Shon Herron

iTrader: (25)

I did the LT4 swap on my 94, the whole LT4 H/I/HOT cam with the 355 rebuild. The car did what I wanted at the time, and that was to get me from A to B. but as time went on I wanted more so I had some work done to the LT4 heads ($1k) and the flow sheet showed they didnt flow any better than a small LT1 P&P set up. So I had over $2k in a set of heads that didnt flow that well and I didnt make but 340ish on the dyno. I always looked back and thought I should have had my LT1 heads P&P'd by AI and one of his cams and had alot more power for less money.

I can not see the need for the LT4 heads at this point in the LTx world. I guess with a LARGE motor and alot of air flow (ie forced induction) they might have their place but there are a few other options out there for the FI crowd. Then having to buy the LT4 intake ontop of the heads, that has gotten stupid....

Ed Wright

iTrader: (1)

I would not use LT4 heads on anything smaller than 383".

http://www.fastchip.com/Ed-995.mpg

T/ALT1

iTrader: (3)

If you want some ported LT4 heads, i have a pair of LT4 Trickflows that are fully ported by Lloyd Elliott and the LT4 intake to go with it. The intake has been modified and ported to fit the heads nicely. I have over $3grand tied up in the set and have been 11.15@121mph N/a, 9.83@136mph on NX175. So for $2,300 I'll sell this proven setup b/c we are trying a LE3 LT1 heads,cam, intake on my car just to see how fast I can run with there stuff. If I don't sell the heads/intake soon I will just swap cams and go back racing as usaul. LMK Later Clint

1997bird

iTrader: (2)

I do not have any track times yet with this motor. I am just putting miles onto right now to break the motor in first, then I will take it to the track. As far as the 195's SUCKING, I would have to disagree with you there. Some time's that I do have with the 195 head are in a 67' Camaro. The heads are a Comp. port 195 cc int runner head(convetional 23* heads have the same flow as our LT-1/LT-4) that are bolted to a 10.0:1 355 cid HR cam motor. On a engine dyno it made 502 HP. The car has a TH-350 tranny with a 3800 rpm stall converter and a 12 bolt with 4.11 rear gears. It has a Victor Jr. intake on it with a 850 cfm Mighty Demon carb. In Pheonix, AZ it runs 12.9 to 13.2 in the 1/4 on motor and a consistant 10.44 1/4 on a 225 shot of N2O.

Our stock heads have a thin deck surface on them. After 500 HP or 11.5:1 compression it is advised not to run them due to cracking the head surface.

streetwarrior96

lt1 castings have proven their use with a good P&P good custom grind cam with the LT1 intake also P&P. I've seen and heard numbers ranging from 370' RWHP to 440's RWHP with great 1/4 mile times . I've never heard of anyone complain about LE,Port Pro's, AI . Their products work! I also have never heard of anyone cracking a LT1 head on this forum, but I'm sure it has happen. I myself have the 195 AFR's Comp series, no times yet, I'll find out Dec 1st @ Edinburg International Raceway, in Edinburg Texas for a good ol Board War match. The time I ran it I ran a 12.60 @ 118 with a 2.1 on the 60' (no traction). Second run I burned the tires more and broke the drive shaft and differential yolk. All in all for the money and performance P&P your old LT1 stuff