Lt4TransAm

iTrader: (13)

What heads do you guys recommend with the mods listed below? Im leaning towards tsp 2.5 5.3 but dont want to spend a arm and a leg on trick flow or afr's. What about getting them milled?

TransAmcoupe98

iTrader: (10)

Guys here lately have been selling some brand name heads in the classified section for a good deal. Try there first. TSP is "claiming" outstanding numbers on those 5.3 heads. It depends on what you are looking for. I think heads are one of the most important mods you can do so do your research and do a search on here of heads you are considering and get the facts. But if you want my .02, AFR, Trickflow, TEA, are your best bets. They might be pricey but you won't find many people that say, man I wish I would have went with a cheaper head.

lemons12

iTrader: (71)

Caleb ^^^ had a great reply...

with the ms3 though, i would look into the ls6s because they slightly outflow the 5.3s..

i would only go 5.3s with a smaller more torqey cam..

allngn_c5

iTrader: (3)

You already have the YT's, why on earth would you want to go cheap on heads? Drop the money on some milled TFS 215's and don't look back. The only thing you'll see back there is the guy you are racing bro!

If you get TFS 215's, I'd strongly suggest that you get a cam that is matched to the tfs 215's. The nothing really wrong with the MS3 other then a little weak on the low end IMO. It's a touch big for a 346, (your 4.11's will love my cam) but with good tuning Mike@Vengeance said it can be done. Consider my cam, 239/243 .623/.623 113+4, perfectly matches the TFS 215s too. Follow the link in my SIG for some graphs and much more. Take a good look at the Allngn_c5 cam !!! Available at Vengeance Racing

NHRAFORMULA00

iTrader: (2)

You will get 40 hp out of the 5.3 seeing your a M6.You can not mill the 5.3 heads with that cam,piston to valve clearance will be an issue.If you order from Tsp tell them you have that cam.For those of you that can NOT read.OP says he does not want to spend the money for 2300$ heads.

Jason 98 TA

iTrader: (4)

Don't forget the PRC 215 heads. For under $2000 without springs you'll get a cylinder head setup with 59.5-60cc chambers that clear the MS3 & you wont be required to purchase rocker arms. You can move your spring kit over & go from there!!!

http://www.texas-speed.com/shop/item...d=993&catid=20

Lt4TransAm

iTrader: (13)

I put down 385hp and 365tq with my current setup. At first i wanted to do the biggest cam without doing heads but i want more power and i want to be over 400hp.

Lt4TransAm

iTrader: (13)

Im also thinking about 125-150 shot with the bottle but that may be later or until i can find a deal on a nitrous set up. So if i get the 5.3 heads just i get some that havent been milled?

danhr

iTrader: (18)

if you call TSP, they can sink the valves on the 5.3 heads, so that you won't have any ptv clearance issues.

or you could get stage 1.0 ls6 heads

or flycut the pistons and run stage 2.5 ls6 heads.

if you want something more streetable, I'd go with the 5.3, because they have a smaller runner than the ls6's, so it will give you more low end power. If you want something wilder, I'd go with the ls6's. and if you intend on spraying it, iirc the ls6's have a thicker deck than the 5.3's, which would give you more of a reason to go with them.

chrs1313

iTrader: (24)

your cam is actually bigger than the ms3...

237/242, .603"/.609" not worth the switch...

allngn_c5

iTrader: (3)

It is if he were to go to the TFS 215 and doesn't want to leave any hp on the table. If a head flows to .625, why handicap it with a .603/.609 cam? Running less cam then your heads like is about as smart as running a cam that has more lift then what your heads can handle. No reason not to take advantage of the heads ability to flow.

On a side note, sorry about mixing the MS3 up with a different cam. I was thinking about something that had a .643 intake lift number.

lemons12

iTrader: (71)

litle88

iTrader: (20)

The trickflow 220's are only 1679.00 with the upgraded springs at Vengeance!

get them milled for 75.00 to a 60cc chamber, for the win!

Lt4TransAm

iTrader: (13)

Well i have about $7000 in the car with all the mods so im trying to find the best bang for the buck. Ive read/heard alot of people with the 5.3 heads thats why i was leaning more towards those. What gaskets should i run with them? Should i get thinner gaskets for more compression?

LS1-NAVY

iTrader: (1)

i dont think u can mill or use a thinner gasket with the ms3 plus if u by them u need to sink the valves or u will have ptv issues

00MaroonZ28

iTrader: (3)

Ported LS6 heads milled.

james562

iTrader: (35)

The added half to full point of compression of any of the heads listed thus far will nulify any soggyness he had down low before with a 23X 24X cam and stock 67.5 cc 10:1 5.7 heads.