MusicCam94

Ok, so im building my 94' gt motor, and im planning on stroking it to a 331. will the heads in the twisted wedge kit work for a 331 motor? also, whats size throttle body should i get with this kit? and any recommendations on any specific lifters?

eaturls1

yes they will work just fine on 331

USMCrebel

if its made for the 302 it'll fit. the 331 is just a stroked 302

r.barn

The heads are ok, but the cam and intake that come with that "kit"
will not feed a 331 properly.

MusicCam94

am i losing power by running these heads on the 302? i havent bored the motor out yet, so its still a 302. im just wondering if boring it out to a 331 will be worth it if im pulling the motor out and doing a complete motor rebuild anyways. and i've read that the intake did work for a 347, so why wouldnt it work well for a 331?

92GreyGT

Take your engine to the machine shop that is going to do your work and let them make the call if it needs to be bored or not. Don't bore it if it doesn't need it, boring it .030" will only add 6 cubic inches. Stroking is where the big gains come in. I would skip right over the 327/331 and get a 342/347. I have a 331 and there is nothing wrong with it but I was under the assumption the 347s required more block machining and used oil which isn't the case at all. The is some minor clearancing that have to be done for the rod bolts to clear but it is nothing major.

As far as the Trick Flow kit it is more designed towards a 302 than a 331 or bigger engine. You will need to piece one together yourself to get maximum performance. The twisted wedge heads are great but they are only 170cc. A stroker engine, again this is coming from experience, needs something in the 180cc+ range to do the engine some justice. Trick Flow sells CNC machined heads that have 185cc intake ports that would be way better or AFRs, Canfileds, etc.

The camshaft also needs to be bigger than a stage 1 Trick Flow. If you really want a Trick Flow they a decent cams but get a stage 2 or 3 and make sure that when you do the valve springs on the heads match what you choose. Call Trick Flow and tell them what you are doing and they will give you all the part numbers to complete your engine.

only90s

I am a huge fan of the Twisted Wedges; however if you are building a stroker then dont get the kit....If you go 331 or 347 then either get the CNC Twisted Wedges for like $1800 or the AFR 185s for $1300ish...then get a stroker cam...not the Stage 1..not big enough...if you want to stay 302 then the kit is decent for the money IMO..

TrickFlowTech

Yes the heads will work with the 331. They are a smaller intake runner but they will work fine. You will actually gain some more torque with the smaller runner head. If you are looking to make more HP go with the 185 cc head, but you will have to piece the parts togther since we do not offer that head ina kit form.

PJC Racing

No reason not go with a 347 vs. a 331.

r.barn

Sweet, straight from the horses mouth .............. WELCOME to the site TrickFlow !!!!