S2VYSS

I'm just after some info and peoples opinion's on the Trick Flow GenX 220 heads

Has anyone used these on a standard stroke LS1? Can they be CNC machined?

Looking at running them with a 230ish cam with 600 lift

Sorry for the open ended questions

Cheers

SOMbitch

iTrader: (8)

For the $$$ they are the best head out there IMO. If you want to CNC them you you have to run them out to the TFS 235cc program and put in bigger valves so it is not a LS1 head anymore.

I'll let you in on a little secret....They have the exact same port as the cnc'ed 215's.The 215's are really 219cc so the 220's are only one cc bigger. Ron at Vengeance made a post saying they were about 7-10 less than the cnc'ed castings.

I run a touched up set on my motor......

SSmoken

iTrader: (26)

i have the as cast 220's with a 230 cam with that lift. car felt good after swapping them. no numbers or track times just yet.

mike c.

iTrader: (1)

Why spend the money to cnc as cast heads? Just buy the cnc'd tricks from tea and do it right..

SOMbitch

iTrader: (8)

I agree Mike I was just pointing out the 235 is the only cnc program that can be run through the 220's. For a smaller bore motor the 220's are a great option though....

RJB01camaross

Thoose heads are a great bang for your buck!! Check out Vengeance racing, I think they are still running a heads and cam special. Check them out!!!

S2VYSS

Thanks mate

So the cast heads only lost 7-10 hp as opposed to the cnc'ed ones?

Thats why I asked the question mate

The long term plans are for a PD blower down the track, will these heads provide a suitable platform to support FI? The cam I'm looking at should support FI

Silver 2000 Ram Air

iTrader: (32)

have some 220's miled to 59cc's going on right now at LMR along with a 226/230 cam. I'll post the dyno results monday or tuesday... but you really can't go wrong with them in any form. The 215's (cnc version, and no doubt a better flowing head of course) only add about 10-15 more hp at moat though, so the 220's are really a GREAT bang for the buck if our trying to budget at all.

S2VYSS

Dont know if cam specs helps but looking at this range 23x 23x @600lift with 113-115 lsa

Is it better to spend the extra and get cnc'ed heads as it will be more of a benefit with FI?

SSPerformance

iTrader: (76)

the as cast 220s are alot better than most people think!!

S2VYSS

Thats the reason why I'm asking the question, the package is great value

SOMbitch

iTrader: (8)

With FI you would see even less of a difference than a H/C/I car..... If you run FI it is MUCH more important to get a cam matched for FI which GENERALLY means some exhaust bias and wide LSA......

S2VYSS

Sorry mate, I dont understand what I will see less of a difference in

I realise cam choice is very important and the cam will be selected with FI in mind. FI is a little further down the track for the time being so I want to have a H/C for the time being

garygnu

a blower needs a different cam profile to make best power.it needs more exhaust duration and a wider lsa.make a 2 piece timing chain cover if you plan to swap a NA cam to a FI cam.

S2VYSS

The cam is going to be FI friendly. Will the heads be FI friendly?

The 2 piece timing cover is a good idea but

Was thinking about having the heads shaved down to 11.1 compression and then when I go the blower run it on E85

SOMbitch

iTrader: (8)

FYI- a blower motor will usually be around 9.5-1 or slightly less. Higher than that it is hard to keep out of detonation with a decent amount of boost....

S2VYSS

I know that, looking at running 10 psi anyway. People are running 10psi with 10.6-1 with the Harrop PD blower kits without problems