274/278 hks 11mm or gsc s2
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Evolving Member
iTrader: (12)
Joined: Aug 2008
Posts: 202
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From: Jamaica to tampa,fl.
I have ran both the hks and S2 in the same motor. The hks idle mush better, but they always had a slight lifter tick ( with gsc zero tick installed ) . I replaced them with S2 and the tick was gone and it gain about 10-20whp. I really liked the hks, they didnt require a bunch of base timing/1000+rpm idle to wotk well with the ac on.
Now im running the R2 cams.
Now im running the R2 cams.
Evolving Member
Joined: Apr 2014
Posts: 323
Likes: 2
From: seattle wa
Ive ran R2 on stock block and they work very well. They gained more than regular S2 too. The idle is the same almost as the S2.
I have also ran Tomei Pro kind of like R2 but a little more mild but with awesome idle.
I have had S2, R2, Cosworth M2, Keford 272
I am not afraid to try anything new....I have never worked with 280s or 260s though.
Run Tomei 270......Sick cams but arent marketed in the US very much.
At the end you cant go wrong with any of those cams.
I have also ran Tomei Pro kind of like R2 but a little more mild but with awesome idle.
I have had S2, R2, Cosworth M2, Keford 272
I am not afraid to try anything new....I have never worked with 280s or 260s though.
Run Tomei 270......Sick cams but arent marketed in the US very much.
At the end you cant go wrong with any of those cams.
Newbie
Joined: Jan 2015
Posts: 22
Likes: 1
From: Brisbane, Australia
I've tuned a few cars with all of the above setups.
- S1's will give the best all round performance for a daily, street car that spends 95% of its time below 6000rpm.
- S2's / Kelford TX272 / Tomei Pro270's give up a little below 5500rpm on a stock or small frame turbo'd car, will give perhaps ~10-12whp up top on a small setup. Once the turbo is larger, they really start to show their worth above 6k.
- R2's on a 2L small turbo drop a fair bit of torque prior to 4500, you can really feel the 'hole' in the torque curve and then suddenly it ramps up vertical around 4500 and you're away.
I think they would work fine on a road race style setup or highway monster, but for a daily/street car there are better options.
- HKS 274/278's are a pretty awesome street cam for small, quick spooling setups. They do exactly what all other HKS products generally do, and compliment under the curve power beautifully without upsetting the drive at all. They idle close to stock and make great power everywhere.
S1's are still my favourite small turbo street cam though.
Very well behaved, work perfect on stock cam gears on nearly all applications, make strong gains everywhere.
I may be a *****, but i'm sick of my S2's loping their head off.
- S1's will give the best all round performance for a daily, street car that spends 95% of its time below 6000rpm.
- S2's / Kelford TX272 / Tomei Pro270's give up a little below 5500rpm on a stock or small frame turbo'd car, will give perhaps ~10-12whp up top on a small setup. Once the turbo is larger, they really start to show their worth above 6k.
- R2's on a 2L small turbo drop a fair bit of torque prior to 4500, you can really feel the 'hole' in the torque curve and then suddenly it ramps up vertical around 4500 and you're away.
I think they would work fine on a road race style setup or highway monster, but for a daily/street car there are better options.
- HKS 274/278's are a pretty awesome street cam for small, quick spooling setups. They do exactly what all other HKS products generally do, and compliment under the curve power beautifully without upsetting the drive at all. They idle close to stock and make great power everywhere.
S1's are still my favourite small turbo street cam though.
Very well behaved, work perfect on stock cam gears on nearly all applications, make strong gains everywhere.
I may be a *****, but i'm sick of my S2's loping their head off.
This advice was perfect. I'm looking at cams at the moment and researching as much as I can and this was invaluable to me! thanks so much.
Newbie
Joined: Nov 2014
Posts: 9
Likes: 0
From: Central Coast
I've tuned a few cars with all of the above setups.
- S1's will give the best all round performance for a daily, street car that spends 95% of its time below 6000rpm.
- S2's / Kelford TX272 / Tomei Pro270's give up a little below 5500rpm on a stock or small frame turbo'd car, will give perhaps ~10-12whp up top on a small setup. Once the turbo is larger, they really start to show their worth above 6k.
- R2's on a 2L small turbo drop a fair bit of torque prior to 4500, you can really feel the 'hole' in the torque curve and then suddenly it ramps up vertical around 4500 and you're away.
I think they would work fine on a road race style setup or highway monster, but for a daily/street car there are better options.
- HKS 274/278's are a pretty awesome street cam for small, quick spooling setups. They do exactly what all other HKS products generally do, and compliment under the curve power beautifully without upsetting the drive at all. They idle close to stock and make great power everywhere.
S1's are still my favourite small turbo street cam though.
Very well behaved, work perfect on stock cam gears on nearly all applications, make strong gains everywhere.
I may be a *****, but i'm sick of my S2's loping their head off.
- S1's will give the best all round performance for a daily, street car that spends 95% of its time below 6000rpm.
- S2's / Kelford TX272 / Tomei Pro270's give up a little below 5500rpm on a stock or small frame turbo'd car, will give perhaps ~10-12whp up top on a small setup. Once the turbo is larger, they really start to show their worth above 6k.
- R2's on a 2L small turbo drop a fair bit of torque prior to 4500, you can really feel the 'hole' in the torque curve and then suddenly it ramps up vertical around 4500 and you're away.
I think they would work fine on a road race style setup or highway monster, but for a daily/street car there are better options.
- HKS 274/278's are a pretty awesome street cam for small, quick spooling setups. They do exactly what all other HKS products generally do, and compliment under the curve power beautifully without upsetting the drive at all. They idle close to stock and make great power everywhere.
S1's are still my favourite small turbo street cam though.
Very well behaved, work perfect on stock cam gears on nearly all applications, make strong gains everywhere.
I may be a *****, but i'm sick of my S2's loping their head off.
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