garth285

Well thinking about getting some heads and trick flow makes these heads, http://www.trickflow.com/product/che...t1/pr_lt1.asp#

aluminum with 195cc intake ports 72cc exhaust ports and a 62cc combustion chamber valves are 2.02 and 1.6

one thing I was wodnerign is that I found on one site that the lt1 stock heads have 54cc combustion chambers so if I get a larger chamber will that drop my compression or no?


What are your guys thoughts on these heads.......good for a mild motor mabey 383 and possibly forced induction?

pillagenburn

iTrader: (2)

larger cc size will drop compression, so on a 35x ci motor it won't be so great. Mill the head perhaps? I dunno, I'm wondering the same thing about em'

Are they just a set of glorified LT1 castings? Or are they really a redesign and a better setup? (what about when ported?)


edit: oh yea, and how would these trickflows do on a 383? un-ported, just as-shipped fully assembled trickflows on a 383ci motor?

FlamingChicken

iTrader: (2)

advanced induction sells these heads ported. you could send them an email and maybe they could tell you more about their performance potential.

96capricemgr

iTrader: (1)

Trickflows own description says strokers and forced induction, let me repeat that again the manufacturer says strokers and forced induction. Don't bolt these onto an NA 350. If you are even asking this question I think the response has to do some reading, the stock heads are good in stock form and can be made much better in skilled hands.

aintno6

IMO they are a good in stock form, as an alternative to the LT4 heads.

I just purchased a set and I am waiting for them to come in. I'm not going to leave them stock though, I am going to send them to AI or a local porter and let them go wild on them. The castings are chuncky and will allow them to be opened up pretty well.

My only dilema is I am doing a massive upgrade to the car. I am replacing 90% of the driveline and suspension at the same time, so I am very limited on how much I can throw into a short block. So I most likely with go with a brand new 350 lt1 block, I think SDPC still sells the corvette replacement short blocks. I would love to build a mean bullet proof 355 and thow the heads on them, but that would set me back, and I want this car up and running with the new good by the begining of spring. So I am kind of the test mule to see if the loss in compression is going to hurt me bad.

IMO with fully ported trick flow heads, and the cc306 or 847 it will be a pretty big increase in power so It will overshadow the losses from the drop in compression. I guess I will have to wait and see. If it ends up hurting me to much, I'll just save for a bullent proof short block, and will spray the **** out of it

Mike

monster7

iTrader: (1)

stock lt1 heads are 58 cc and lt4 heads are 54cc if i remember correctly

SStrokerAce

iTrader: (2)

The best thing you can do is a SEARCH on TFS or Trickflow heads in this forum.

Bret

T/ALT1

iTrader: (3)

The heads work fine on a 355" LT1 engine as long as you have the block zero decked and have the heads angle milled a little you can keep the compression about 11.1 with flattops. If you are building a new shortblock you could always buy dome pistons since you would buying pistons anyways and not have to mess with milling the heads. I went form ported LT1 heads/intake with the CC306 to a set of the new Trickflows fully ported by Lloyd and I love the new setup(same CC306) Trickflow heads and LT4 intake. I went to the track and the car ran quicker in the 1/8th (7.18@98mph) then ever before w/o any PCM tuning yet. The car feels stronger and I now have a tune and some injectors but won't be able to try it out until next month. You can't beat the price for these heads bare either. They come with bronze liners, big valve seats and ready to support big horsepower unlike stock castings. Later Clint

blkchevyz

i think you would make more power with a stock ported head and that cam... plus you will save money.


people had the same issue with the afr heads a long time ago, they would put the heads and cam on and not really gain much becuase of the loose compression... i think since then you can get them with different size chambers

96capricemgr

iTrader: (1)

I take it you sell these? That is the ONLY way I can see someone recommending them is for personal monetary gain. They are a joke. Where does the 24hp gain CLAIM come from. I know Edelbrocks own testing had extra stuff done that if you read they admitted too like a swap to 1.75" headers.

EPP

iTrader: (22)

Actually, I could get them to sell, but I'm not direct with Edelbrock. We did pick up a pair of them that we are going to use on the build-up of an '96 Trans-Am. Edelbrock isn't known for putting out junk, what exactly have you heard about these heads? Bob

monster7

iTrader: (1)

they edlebrock heads flow right at 20 cfm more than stock why in the hell even mess with them

and yes i have seen a bench flow with them side by side stock was like 201 and the edlebrock was like 219 if i remember right.
sorry but LE1 package kills them, hell stock lt4 kills them for that matter

1badlt

the bench flow on the trick flow look pretty good
edlebrock bench flow sucks
le1 package looks like it would kick the hell out of eblebrock
for the money trick flow or port stock heads
im gona get a pair a trck flows after i fix my rear end

Out1aw

iTrader: (1)

Edelbrock Performer's are the best/

monster7

iTrader: (1)

[macho man randy savage] Ohh Yeeaaaaahhhh! [/macho man randy savage]

Dragframe

iTrader: (14)

so... for like my turbo motor would someone go with trick flow heads? or a LE1 or 2 and intake?

**** it.. im going LE3 from Port Pros or soemthing similar

T-REZ

iTrader: (13)

i have trick flows,if you want pics let me know.

garth285

and for my all motor/nitrous motor stock ported heads will do huh, probably over size valves a lil bit if possible?

I have a guy who does race heads on porshes and 350s and such and hes doing a ninja zx11 head for us at work for 300 bux, so Im gunna sk him how much to get my heads taken care of.......I might jsut pull the entire motor and do a 383 crank with good rods and pistons. He'll probably know the best cam for me to then I guess.

Thanx guys!

LT1PWRD

iTrader: (2)

Do any of our sponsors have a CNC program for these? With choices of 70-100% CNC porting options of the intake,exh,chambers. I wanted to get a set (bare) and send them out. I also want to know if the seats can go 2.08/1.60 or 2.100/1.65" and what kind of mid flow #s people have gotten with these.

SStrokerAce

iTrader: (2)

Seats should only go to 2.055-2.08 and 1.60 on the exhausts.

Why would you want a 70% CNC job to compare to a AFR? That would be a waste IMHO. Why CNC too? It's only as good as the program, and even if there is a good port in there the quality of the person who can program the CNC.

Your other issue is with the bigger valves not many places are going to have a CNC for that much valve. TEA only has one for a 2.02

I've seen 300cfm out of them from a few different places. Lloyd Elliot being one of them.

Bret