SUPERBOOST

iTrader: (11)

What are the best heads for a mostly street 347 ls1.Looking for bang for the buck heads,not ultimate hp heads.One of the various ported heads like tex. speed,etc.?Or should I hold out for aftermarket heads like trickflows.I have a good set of stock 241s I can get ported if thats the best route.Opinions,suggestons,advice welcomed.

allout06

iTrader: (11)

cant beat a set of 5.3 2.5 heads from texas speed. nice little compression bump and they are only like $1200... im going with these heads along with a torquer v3 cam.

A.R. Shale Targa

iTrader: (2)

There have been a few threads on here recently of poeple who are very
pleased with the results from sending their 241s to Advanced Induction.
Check in the dyno results section I think Damian did the build and tune.
Pretty sure he CNCs the runners from 204 to 219cc, valve job (stock valves)
New PSI maxlife bee-hive springs (good to .625lift), seals, and mill to comb.
chamber of desired volume. I know the 243 castings are a better starting
point but since you already have those I'd click on the AI link to the right
and give the guy a call. I wanna say Phil is his name

Sidieux

I like the patriot heads for the price. I got a set for $1300 from summit racing that were stage 2, LS6. Very nice power from them.

SUPERBOOST

iTrader: (11)

How much power are you leaving on the table when you use a factory type ported head compaired to an aftermarket head?Is it worth the difference in price?

wytry

iTrader: (6)

It really depends on the rest of your setup. You could invest in top of the line heads, but if your cam, intake mani, and fuel system aren't up to par, they wouldn't produce what they are capable of. Plus, you should have a cam matched to your head selection for the best setup.

On another note, I went with TSP Stage 1 LS6's over the 5.3's. They will mill them for free to your desired specs if you want a compression bump. I went with 62cc chambers for my Torquer v2, and will be going down to 60cc's after I flycut and change cams. But yes, I believe they are an excellent bang for the buck head.

wytry

iTrader: (6)

So what I should have said is tell us your current setup, your future plans, how you use the car, then we can decide if the extra coin is worth it or not.

PREDATOR-Z

I agree with that

SUPERBOOST

iTrader: (11)

Well,I have an l92 that I will do later on but for now it will be an ls1,stock bottom end,(fresh)with a good street cam and ported or aftermarket heads.With stock pistons I cant get too wild on the cam so probably 230ish,113-114,600lift or a little less.Ls6 intake,headers.Its going in a 66 chevyII with a six speed,355 or 373 gears.Aftermarket front clip so guessing around 26-2700 lbs.Just dont want to leave too much on the table not doing the aftermarket heads but not sure it worth the extra money or not.Ocasional blast on test and tune night but mostly a fun street car. Suggestions welcome.

SOMbitch

iTrader: (8)

This was the difference from ported 5.3's to TFS "as cast 220's".... No other changes same dyno...

PREDATOR-Z

Truth Man, Truth

SUPERBOOST

iTrader: (11)

Thanks for the graph,cant get a much better comparison than that.Looks like about 15-20 hp.difference.I guess If I can find a good deal on some trick flows I will go that route if not I will have to live with 15-20hp less.

Mac 2002 SS

iTrader: (6)

check these heads out from Livernois Motorsports. Remember to always keep your options open .

http://www.livernoismotorsports.com/...t.phtml?p=1351

kinglt-1

iTrader: (26)

If your on a budget have AI work your 241's like mentioned. I bet they put out better numbers than patriot's stage 2 243's lol...

http://www.advancedinduction.com/AiProductsGMLS1.html
http://www.advancedinduction.com/AiProductsGMLS2.html

zacht

iTrader: (18)

how do the AI 243's compare to TSP's? stage 1's???

BrntWS6

iTrader: (7)

You could get the 2.5 LS6 heads milled to 11:1 compression and they would be about the same as the TF as cast 220's. Plus with the TF they recommend rockers which are over $400.

TF heads/cam package as cast 220's with rockers = $2900
TSP 2.5 LS6 heads/cam package = $2140.
(both are priced with all gaskets needed)


A budget head compared to a premium will be about a 15-20 hp difference on average. But your paying an extra 1k for that.

I don't wanna sound like I'm swinging from anyons nuts, I've just been doing A LOT of research trying to find the best bang for the buck.

SOMbitch

iTrader: (8)

Ummm I paid $1700 for my heads and have seen them at VR with free milling for $1600. You can pay $100 more and get the harder powdered metal guides like GM uses and not need the rockers... I would still shim .090 to improve geometry so a little more for the shims... You also get a thicker deck and stronger rocker bosses to boot...

EDIT: $1700 for heads with TEA Gold springs, + $425 for custom cam...

BrntWS6

iTrader: (7)

Didn't know you don't have to use the rockers. What are the downsides to not using them? The price I got was right off VR website, but didn't see anything about 86'ing the rockers. Both shops will mill for free.


-so for TF setup 220 as cast with H/C and no rockers = $2225.00
-TSP 2.5 ls6 H/C $1979.00
-or go with the TSP stage 1 LS6 for $1569.00 and sacrifice ~5hp, but the valves aren't as good.

So all things being equal you'd probably have about the same HP with the first two setups and the TSP's being $245.00 cheaper but with TF arguably having a better head. Tough call, guess it depends on just how much of a budget your on. Both are a tried and true head so for me personally I'd probably save the $245 and use it on a new oil pump and timimg chain.