and so it starts
#52
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
looks like the heads will be here on friday, i also said hell with it and ordered up a set of 10cc dished pistons ,with a .015 shim type gasket i will have 9.1-1 compression with the 64cc heads
next week i will order up a set of 4340 bushed rods , head studs and the remainder of the head hardware i need to finish assembling the heads , along with a push rod lenght tool
next week i will order up a set of 4340 bushed rods , head studs and the remainder of the head hardware i need to finish assembling the heads , along with a push rod lenght tool
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
did this a few days ago
even though its not going back on the motor i deceided to port it
still alot of work left on it , im either going to sell it when im done ir replace the tbi on my truck with it
even though its not going back on the motor i deceided to port it
still alot of work left on it , im either going to sell it when im done ir replace the tbi on my truck with it
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
heads are here
#58
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
200 cc runner 64cc chambers , can be had with straight or angle plugs , and also 2.05/1.60 valves or 2.02/160 valves
i went for the angle plugs and ill be running the 2.05/1.60 valve combo
399$'s shipped to my door bare for the pair , they look great as cast , but im going to do some very very mild cleanup on them
i went for the angle plugs and ill be running the 2.05/1.60 valve combo
399$'s shipped to my door bare for the pair , they look great as cast , but im going to do some very very mild cleanup on them
#59
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Car: 91' Z28, 92' Z28
Engine: 383, L98 stock
Transmission: Built 700R4, Stock 700R4
Axle/Gears: 12 Bolt 3.73, 10 Bolt 3.23
Re: and so it starts
Okay, they have some potential. But don't go crazy with porting, just use sand rolls/ flap wheel to clean up the casting flash no cutting and make sure you unshroud the intake valve after pressing in the seats.
#60
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
that was the plan just clean up the tiny bit of casting flash , deshroud the valves and bolt them on , seats are already installed and have 3 angle grind on them
they already flow 260cfm @ .500 lift and with the turbos theres no real need to port them any further
hell these things flow more at .300 then my old ported heads did @ .550 lift
#61
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Car: 91' Z28, 92' Z28
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Transmission: Built 700R4, Stock 700R4
Axle/Gears: 12 Bolt 3.73, 10 Bolt 3.23
Re: and so it starts
Okay my bad, I didn't look close enough. But for sure unshroud the valves.
#62
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Car: 89 RS 89 iroc 87 firebird
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Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
so ive been doing more in depth research now that i have the heads in my hands, taking measurements and comparing these heads to a big brand name head that they are rumored to be copys of
these heads are infact dart pro 1 platinum copys , and can be ported out to flow well over 300cfm
these heads are infact dart pro 1 platinum copys , and can be ported out to flow well over 300cfm
#63
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
i didnt exactly have the right gaskets on hand , but this is with a standard rebuilders gasket
lol those heads and valve covers will dwarf a tpi intake
theres just enough meat on the tpi intake to seal up the port but not by much
will it work with a standard sbc intake ...... u would have to check each intake to see if it would seal, the tpi does seal but i wouldnt use it , i would deffinatly get a votec tpi base or other vortec or raised runner intake
im going to send back my standard hsr for a vortec hsr , though im still debating on a single plane efi and elbow or 4bbl tb setup
lol those heads and valve covers will dwarf a tpi intake
theres just enough meat on the tpi intake to seal up the port but not by much
will it work with a standard sbc intake ...... u would have to check each intake to see if it would seal, the tpi does seal but i wouldnt use it , i would deffinatly get a votec tpi base or other vortec or raised runner intake
im going to send back my standard hsr for a vortec hsr , though im still debating on a single plane efi and elbow or 4bbl tb setup
#64
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Car: 1991 Christine Z28
Engine: RV Cam and Intake 350 SBC
Transmission: 5speed
Axle/Gears: 3.08 ls Posi
Re: and so it starts
That's why I had to go carb'd with my new motor, which was a pain the butt to change everything over instead of reusing the TPI stuff...Didn't seal completely...
#65
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
but putting tpi back on the motor with these heads would make no sense at all , it would just neuter the engine ,
anyways my pistons will be here today , then ill take the rods and pistons upto the machine shop to have the new pistons put on, if my current rods need any form of work im not going to reuse them.i will buy a set of bushed rods and the spirolox for the pistons
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
yay new pistons showed up almost time to get the motor 100% back together
hyper piston with 10cc dish , i need to knock off the sharp corners were the inner dish meets the valve reliefs as they look like a prime edge for a hotspot to develop
hyper piston with 10cc dish , i need to knock off the sharp corners were the inner dish meets the valve reliefs as they look like a prime edge for a hotspot to develop
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Car: 89 Camaro RS running MS2X
Engine: .48/.60AR T3/T4 2.8L V6
Transmission: Rebuilt 700R4 2500 stall
Axle/Gears: Next to break...
Re: and so it starts
Looks like a good build, Can't wait to see how it turns out. And you have made up my mind for me on paint choice. All satin black, with my black plasti-dipped wheels, stealth
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Car: 1989 Camaro Iroc Z
Engine: L98
Transmission: 700R4
Axle/Gears: 9 Bolt Borg Warner/ 2.77 gear
Re: and so it starts
You are very lucky then. I never use that type of piston after something went wrong breaking in a 450hp big block motor. Moments after breaking in the motor at a standstill, I went driving on the highway. When I went to pass someone, the car backfired really bad then stalled.I pulled the heads off a day later, and found that I was missing a chunk from one of the brand new speed pro pistons. I use that piston as a paper weight and a reminder to never buy hypereutectic pistons. I wish you the best of luck.
Last edited by IrocRoadRacer; 01-16-2014 at 11:07 AM.
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Car: 1989 Camaro Iroc Z
Engine: L98
Transmission: 700R4
Axle/Gears: 9 Bolt Borg Warner/ 2.77 gear
Re: and so it starts
You are very lucky then. I never use that type of piston after something went wrong breaking in a 450hp big block motor. Moments after breaking in the motor at a standstill, I went driving on the highway. When I went to pass someone, the car backfired really bad then stalled.I pulled the heads off a day later, and found that I was missing a chunk from one of the brand new speed pro pistons. I use that piston as a paper weight and a reminder to never buy hypereutectic pistons. I wish you the best of luck.
Last edited by IrocRoadRacer; 01-16-2014 at 11:07 AM.
#72
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Car: 91' Z28, 92' Z28
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Re: and so it starts
That maybe the case, but your still playing with fire and there is always a first time for everything! Remember what happened to Sailtexas? https://www.thirdgen.org/forums/powe...-z28-c-11.html
Last edited by zz17iroc; 01-16-2014 at 02:55 PM.
#73
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Re: and so it starts
I remember! LOL
I tore that engine down recently and have done some failure analysis. I cansay with 95% confidence that it was a rod failure. More specifically the rod yieldedfrom too much cylinder pressure (brake boost at a low-ish rpm and a boostspike). The piston did shatter like glass, but it just fell out of the bore and got beat up by the spinning crank weights and part of the rod still attached to the crank. The way the rod failed was a buckling failure, not shear/bending.And it failed in the obvious buckling critical area.
With that said, if I was building a new engine from scratch I would NOT usehypers to allow a little more forgiveness with the tune and the cost difference is laughable once your that far in, but I don’t think theyare that bad if your tune is good and you’re not making stupid power.
I tore that engine down recently and have done some failure analysis. I cansay with 95% confidence that it was a rod failure. More specifically the rod yieldedfrom too much cylinder pressure (brake boost at a low-ish rpm and a boostspike). The piston did shatter like glass, but it just fell out of the bore and got beat up by the spinning crank weights and part of the rod still attached to the crank. The way the rod failed was a buckling failure, not shear/bending.And it failed in the obvious buckling critical area.
With that said, if I was building a new engine from scratch I would NOT usehypers to allow a little more forgiveness with the tune and the cost difference is laughable once your that far in, but I don’t think theyare that bad if your tune is good and you’re not making stupid power.
#74
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
i am very well aware of the risks , but a hyper piston is good as long as ur tune as good
this engine will be capable of making stupid amounts of power , but my build costs are so minimal its worth the shot . this will be the most power ive tried hyper pistons with. i have a feeling i will break the rods or crank before the pistons
this engine will be capable of making stupid amounts of power , but my build costs are so minimal its worth the shot . this will be the most power ive tried hyper pistons with. i have a feeling i will break the rods or crank before the pistons
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
its cheap enough if i get a year out of it ill be super happy
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Car: 89 RS 89 iroc 87 firebird
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Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
anyways these are the headers im going with , the logs prolly would have done it , but im building the turbo system so it can be transfered over to the 427 down the road and support the power that will make
i was going to build my own but for the price of those and how limited on time i have been latley im just going to buy them
i was going to build my own but for the price of those and how limited on time i have been latley im just going to buy them
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Re: and so it starts
anyways these are the headers im going with , the logs prolly would have done it , but im building the turbo system so it can be transfered over to the 427 down the road and support the power that will make
i was going to build my own but for the price of those and how limited on time i have been latley im just going to buy them
i was going to build my own but for the price of those and how limited on time i have been latley im just going to buy them
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
new parts including shipping
pistons 93.96
heads bare 399.00
perfect circle moly rings 23.74
valve covers 50.26
1.5/1.6 rockers 50.00
cam and lifters 103.97
engine gaskt set 71.24
main/rod bearings 45.00
spiro lox 39.99
scat comp rods 299.99
arp headstuds 99.99
fuel rails 54.99
2.02/1.60 valves 99.99
springs/locks/ret 64.99
studs guideplates 30.99
vortec hsr 365.00
total = 1829.10
missing are some misc items like pushrods , and machine work
pushrods have not been ordered yet as i have to check lenght and machine work comes in around 300 bucks
pistons 93.96
heads bare 399.00
perfect circle moly rings 23.74
valve covers 50.26
1.5/1.6 rockers 50.00
cam and lifters 103.97
engine gaskt set 71.24
main/rod bearings 45.00
spiro lox 39.99
scat comp rods 299.99
arp headstuds 99.99
fuel rails 54.99
2.02/1.60 valves 99.99
springs/locks/ret 64.99
studs guideplates 30.99
vortec hsr 365.00
total = 1829.10
missing are some misc items like pushrods , and machine work
pushrods have not been ordered yet as i have to check lenght and machine work comes in around 300 bucks
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Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
Lookin' good.
Where yout getting the studs & guideplates from?
Those heads drilled for the vortec bolt pattern?
What intake gaskets are you going to use? GM or one of the FelPro flavors.
Where yout getting the studs & guideplates from?
Those heads drilled for the vortec bolt pattern?
What intake gaskets are you going to use? GM or one of the FelPro flavors.
#84
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
the studs and guideplates i picked up locally from a friend who had a new set laying around
the heads are drilled for both the vortec and standard pattern intakes , going with the felpro gaskets , as the port is larger then a standard vortec
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Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
I am going with some low budget vortec heads so I did some research and that is what I found. It may be incorrect.
#86
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
Felpro makes a few different sets for the vortec. I think the best ones only come in the top end pkg kit. Some have discussed the 1255 gaskets failing and leaking coolant.
I am going with some low budget vortec heads so I did some research and that is what I found. It may be incorrect.
I am going with some low budget vortec heads so I did some research and that is what I found. It may be incorrect.
the 1255 will have to be trimmed to fit the port on these heads , i still need to look into the gaskets and see which one is the closest fit
port is 2.10 x 1.18 before porting
the mr gasket 136g looks promising
its
2.30x1.31
a lil thick at .125 though
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Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: and so it starts
As much as I like the flow characteristics of the vortecs. As much as I like the raised ports.
I think the 4 bolt intake pattern sucks.
I debated buying a vortec single plane and installing EFI on it, or buying Gen 1 single plane EFI and drilling vortec heads for Gen 1 intake and hoping that there would be enough meat at the top of the port to seal. I decided on getting a single plane vortec but not sure it was the right decision. I am drilling the vortec heads for Gen 1 intake just in case.
Would the china single plane EFI intake Gen 1 fit your heads (meat at top of ports)?
I think the 4 bolt intake pattern sucks.
I debated buying a vortec single plane and installing EFI on it, or buying Gen 1 single plane EFI and drilling vortec heads for Gen 1 intake and hoping that there would be enough meat at the top of the port to seal. I decided on getting a single plane vortec but not sure it was the right decision. I am drilling the vortec heads for Gen 1 intake just in case.
Would the china single plane EFI intake Gen 1 fit your heads (meat at top of ports)?
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
As much as I like the flow characteristics of the vortecs. As much as I like the raised ports.
I think the 4 bolt intake pattern sucks.
I debated buying a vortec single plane and installing EFI on it, or buying Gen 1 single plane EFI and drilling vortec heads for Gen 1 intake and hoping that there would be enough meat at the top of the port to seal. I decided on getting a single plane vortec but not sure it was the right decision. I am drilling the vortec heads for Gen 1 intake just in case.
I think the 4 bolt intake pattern sucks.
I debated buying a vortec single plane and installing EFI on it, or buying Gen 1 single plane EFI and drilling vortec heads for Gen 1 intake and hoping that there would be enough meat at the top of the port to seal. I decided on getting a single plane vortec but not sure it was the right decision. I am drilling the vortec heads for Gen 1 intake just in case.
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Car: 89 RS 89 iroc 87 firebird
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Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
ordered up the stuff for the block fill going to do a half fill on it
connecting rods/valves, new valve springs, spring seats , retainers, should be here mid next week
wont be long now before this thing is together
i also ditched the .550 springs im going with a .650 lift spring since i know im going to swap cams again down the road
connecting rods/valves, new valve springs, spring seats , retainers, should be here mid next week
wont be long now before this thing is together
i also ditched the .550 springs im going with a .650 lift spring since i know im going to swap cams again down the road
#90
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Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: and so it starts
long block is together minus pushrods and timing chain but i scored a great deal on a manley wet belt drive so gota wait for that to come in
also waiting on verification on the 7qt oil pan i have in mind to see if it will fit
wont be long now boys
also waiting on verification on the 7qt oil pan i have in mind to see if it will fit
wont be long now boys
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Car: 1991 Christine Z28
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Re: and so it starts
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#96
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Car: 1991 firebird
Engine: TBI 305 (built)
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Axle/Gears: 4.10
Why not ? It was summit brand billet double roller and was about the price of the name brand non billet... and they were really nice pieces .. with 8 degrees of can advance OR retard at the crank keyway ...I didn't skimp on parts for my build even tho its fairly mild I also went with a summit sfi balancer ..
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#100
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Car: 1991 firebird
Engine: TBI 305 (built)
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Axle/Gears: 4.10
For a 305 that's pretty hot. ... and that signature is about 2 years old the motor only has 1000 miles on it if that just got it pit in a couple months ago and I have a 150 shot waiting to go on it
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