Stuff it all the way! 600bhp!!!
Discussion
going to upgrade my GTO 3
Jetstream are going to do all the work as follows :
shot peened gearbox (original six speed with LSD)
upgraded clutch
oil cooler on gearbox
uprated valve springs
Cosworth forged pistons
Uprated main bearings
Stainless manifolds
GT28RS turbos
Roush sport cat Exhausts
Uprated engine mounts
Uprated fuel pump
Uprated intercooler with fan
new injectors
new engine Oil cooler
3R lights
Repaint Orange
New 19" wheels with 888 Rubber
New Floor
M400 Suspension
Looking for 600bhp
Bring it on....
With me luck..
Thanks Andy
Wattsy
Jetstream are going to do all the work as follows :
shot peened gearbox (original six speed with LSD)
upgraded clutch
oil cooler on gearbox
uprated valve springs
Cosworth forged pistons
Uprated main bearings
Stainless manifolds
GT28RS turbos
Roush sport cat Exhausts
Uprated engine mounts
Uprated fuel pump
Uprated intercooler with fan
new injectors
new engine Oil cooler
3R lights
Repaint Orange
New 19" wheels with 888 Rubber
New Floor
M400 Suspension
Looking for 600bhp
Bring it on....
With me luck..
Thanks Andy
Wattsy
Very nice list !!! Might I suggest getting the Roush exhaust modified so it is repackable , they are stupidly loud as std , also Jetstream do a upgrade on the ecu that give you the ability to have 3 boost levels , I find the gap between 500 and 612 a bit of a pain so a 550 setting in the middle would be an advantage , especially on the road .
No mention of tyres and brakes , I hope they are in very good order .
.best of luck , the car is truly uncreditibly quick with 600 + bhp !!
Tux
No mention of tyres and brakes , I hope they are in very good order .
.best of luck , the car is truly uncreditibly quick with 600 + bhp !!
Tux
As your going full monty I recomend you reprofile the cams and flow the heads, makes the engine flow really well.
For tyres I'd skip the 888s and just use the Mitch cups as they are same money although tyres are def a personal choice especially for road.
Not sure I would go 19inch wheels, will rob you power unless you can get them similar weight to the 18s and ride will suffer due to the profile of tyre
For tyres I'd skip the 888s and just use the Mitch cups as they are same money although tyres are def a personal choice especially for road.
Not sure I would go 19inch wheels, will rob you power unless you can get them similar weight to the 18s and ride will suffer due to the profile of tyre
Hehehe, not a bad list to start with but you'll be surprised what else we can add to it 
As Andy says, the cams and heads are a great idea and will also mean the turbos don't have to work quite so hard so you can keep a bit of heat out of the engine as a result. (Managing the 600 conversion is all about reliability)
Uprated fuel pump is a must, but for 600 you probably need to double up and fit 2.
(Getting the tank out and opening up the connections and maybe baffling it is a good idea too)
Also, while doing the clutch it's a good time to fit a lightweight flywheel.
Dave will undoubtedly sort you out though - you're in good hands there
Oh, and as Tux says, mod the Rousch boxes - mine seems to object to keeping the wadding inside them, it prefers to blow it out as soon as it can!
Enjoy the ride!
As Andy says, the cams and heads are a great idea and will also mean the turbos don't have to work quite so hard so you can keep a bit of heat out of the engine as a result. (Managing the 600 conversion is all about reliability)
Uprated fuel pump is a must, but for 600 you probably need to double up and fit 2.
(Getting the tank out and opening up the connections and maybe baffling it is a good idea too)
Also, while doing the clutch it's a good time to fit a lightweight flywheel.
Dave will undoubtedly sort you out though - you're in good hands there
Oh, and as Tux says, mod the Rousch boxes - mine seems to object to keeping the wadding inside them, it prefers to blow it out as soon as it can!
Enjoy the ride!
andygtt said:
As your going full monty I recomend you reprofile the cams and flow the heads, makes the engine flow really well.
For tyres I'd skip the 888s and just use the Mitch cups as they are same money although tyres are def a personal choice especially for road.
Not sure I would go 19inch wheels, will rob you power unless you can get them similar weight to the 18s and ride will suffer due to the profile of tyre
Might as well since the head is off AndyFor tyres I'd skip the 888s and just use the Mitch cups as they are same money although tyres are def a personal choice especially for road.
Not sure I would go 19inch wheels, will rob you power unless you can get them similar weight to the 18s and ride will suffer due to the profile of tyre
k the bill keeps going upstock rods are great and more than up to 600bhp, but they cant be used with the cosworth pistons I have as they are too short.... it a big expense to go for teh cosworth pistons as you have cost of both pistons AND new rods unfortunatelly 
More than worth the cost however IMHO as they made my car loads more drivable and eager to go!
More than worth the cost however IMHO as they made my car loads more drivable and eager to go!
andygtt said:
stock rods are great and more than up to 600bhp, but they cant be used with the cosworth pistons I have as they are too short.... it a big expense to go for teh cosworth pistons as you have cost of both pistons AND new rods unfortunatelly
More than worth the cost however IMHO as they made my car loads more drivable and eager to go!
Yeah just spoke to Dave, yeah Dave said I could put the cosworth pistons in, but I need to change the rods to boot, how much were the rods and pistons Andy?More than worth the cost however IMHO as they made my car loads more drivable and eager to go!
WattsyGTO said:
Had a quote From Dave with all the work mentioned £19.5K
If that includes the bodywork, paint, suspension etc, and the VAT it's a great price!Surely just the engine etc though?
Not too sure how much mine was. I did have a very detailed spreadsheet at the start, but Kev told me to throw it away - which I had to agree to pretty quickly
Eta - presume you already have a track day sump, if not......
Edited by 951 on Friday 20th September 22:43
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