1. How much must be milled off. (assuming .015 gaskets)
2. Do you run into any bolt on problems such as now that the heads are milled, the intake doesn't line up correctly.
3. About how much does the milling job cost.

Thanks for your help.

------------------
Rob
'86 TA 305 TPI
Gutted MAF, Ported Plenum
TB Bypass, Home made Cold Air Intake,
Edelbrock T.E.S.

 

Anyone have any experiance with this?

 

I have a Article on it someplace.....


Really depends what CR you want in the end, and What Pistons you have...




------------------
60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver 14.82 @ 91.1
Reader's ride -> My Ride

Just another Hot Rod kid, or thats what they all tell me.
Livin' the Stereotype

 

Yea, I saw that article in Car Craft. I believe they milled it down .045, and with using the .015 gasket, they got 10:1 compressions.

I wanted to stay with my orginal 9.5:1 compression, stock bottem end 305 engine. So I dont know how much to mill, what it would cost, or if I would have any problems lining up things.

 

Yeah I did this job but be careful the gaskets they call for is very thin and if you have any scaring on the Deck of the block you may have leaks........I lost a little compression however I got a better seal by using a standard gasket. The heads rock.....thats the truth


Brian

------------------
1989 Camaro RS

305 .030 over Hydro Pistons
Vortech heads milled to 58cc...Performer RPM intake....LT4 cam..Crane Gold rockers...FastChip custom chip...ALum. Driveshaft...3.73 gears with Posi...underdrive pullys...Rebuilt 700R4 with Vette Servo and B&M shift Kit...MSD ignition...A/C Delete No SMOG junk....1997 SS leather interior...B&M Shifter... Ultimate TBI mods...14X3 K&N open Element Non-Drop...Hooker headers....3" exhaust with Flowmaster Cross flow 16X8 Wheels from 97 RS Spohn LCA's Spohn Panhard Bar..LETS PLAY FORD!!

www.geocities.com/feltsb

 

Brian,
What did it cost? How much was milled? Any alignment problems? I need to know, I wish to do the same thing, includeing using the ZZ4 cam.

 

R.O.B., check out the World Products SR305 Torquer heads. Super Chevy put a set on a 305tpi and got a 51hp increase. There is an article in the new Camaro Performer mag that Super Chevy puts out. They baselined a 305tpi with the only mods being a roller cam of unknown specs and stock heads with a tripple angle valve job and got 215hp then swapped the heads out to the SR305Trq's and made 266hp. Pretty impresive in my book.

Steve

 

I couldn't tell from reading that article if the 51hp increase was from changing just the heads or both the heads and the cam at once. I reread it and i still couldn't tell.
Brian, did the intake line up with the heads after you had them milled? I've been planning on doing this for months now.

------------------
Pat Hirsz
www.iit.edu/~hirspat/MyPage2.htm
88 305TBI
Mods:Hooker Aerochamber 3" exhaust, no cat,SLP 1 5/8" headers and y-pipe March pullies, no smog, 180 thermo,
14x4 K&N, 3.42 gears(open), Ultimate TBI Mods,AFPR,MSD(ignition,coil&wires),Edelbrock TBI Manifold, 190ltr/hr fuel pump,
Eibach springs with KYB's all around,
Harwood cowl hood, Z-28 wing, fresh paint(black)
120,000 miles, 5spd, T-tops
0-60mph-7.2s-Gteched

92 RS, 305TBI, auto, 3.08 gears, 180 thermo, glasspack (no muffler)

 

What intake are you going to use? A TPI intake won't line up to Vortec heads, the ports aren't the same.

------------------
"So many Mustangs, so little time..."
ICON Motorsports

 

I couldn't agree more. Everyone seems to think that Vortecs are the end-all, be-all of cylinder heads. SR 305 Torquers are great, check em out.

------------------
'89 Firebird Formula 350
L98, WS6, Red/grey, t-tops, and a 3.27:1 rear
K&N, TB bypass, no MAF screens, CAI, full Accel ignition, no cats, Hooker Supercomp shorties, Hooker 3-inch catback
ET? 14.19@98.9mph (G-tech)
(Corrected for G-tech 'extra' 6mph)
Also own '83 Firebird 2.8 2bbl. 155K miles.
ET? Break out the calendar!

 

Well, I agree the 305 torquer heads are decent, but by playing with my Dyno2000, using my TPI setup (hoping the intake will be available within the next year), ZZ4 cam, and my headers, the Vortec heads are worth 16 more poines @ 5500 rpm, and 7 more lbs of torque. Granted, 16/7 isn't much, but when you consider I wish to purchase a new aftermarket intake (could go regular or vortec patter, same price)and the cost of the heads are near the same, why not get the extra ponies. Only real dis-advantage is the EGR setup. Unless I'm seeing the wrong prices for the 305 torquer heads, why not to the Vortec swap.

 

Car Craft did a build up on a carbed 305 with Vortecs and got 325hp, then they put the Torquers on (but with a sligthly different intake) and made 296hp. Since my car won't pass visual anyway, i'm going with the Vortecs and i'm planning on getting them milled about .03" or .035" so that i could still used them on a 350 later on.