cam for twin gt45s
Launching!
Joined: Oct 2010
Posts: 263
Likes: 0
From: hugo okla.
Martin im runnin a 218/229 545 114lsa cam in a 5.3 and just changed up from a single s480 deal to a twin on3 70mm .81ar turbine turbs on the racing innovation up n forward headers and was wondering if a new cam was in order to help drive the 70's harder or stick with what i have already.the lil cam pulled well to 6900 before the small turbine held it back.figure losing a ton of backpressure wld allow more rpms on same cam???? Maybe retard it 2-4*?? I see all these 112+4. cams and assume thats a 112lsa cam installed with 4* advance correct?
FWIW-I am shocked the ebay turbo's always come up. I know some success but damn these ON3 70's flat out rock. The absolutely smoke the precision 62's I had. Not even close. I am not sure who has gone the fastest so far using the chinese turbo's but I would have to think that my 3720lb chevelle that has run 6.00@116.85mph has to be at least one of the fastest. I have put these things through the ringer at the drag strip and on the street. I drive an average of 300 miles a week. I take my kids to school and pick them up everyday unless the weather is just absolutley horrible. These turbo's have not missed a beat. They ran awesome on my 5.3 and on my current 6.0.
Hope my experience has helped. A set of the On3 70's as was mentioned with a stock 5.3 will easily net the hp you are looking for.
Hope my experience has helped. A set of the On3 70's as was mentioned with a stock 5.3 will easily net the hp you are looking for.
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 77
Likes: 0
This is not a "74mm" turbo in the classical sense. You're quoting the wrong spec.
By conventional naming this would be a "52mm" turbo (Compressor Inducer). Or also could be called a "52/58" turbo. (Compressor Inducer / Turbine Exducer).
I would suggest avoiding these for your setup based on compressor/turbine size.
Consider the On3 Performance 70mm turbos if you're looking for a budget twin setup:
On 3 Performance 70mm turbocharger T4 Camaro Firebird | eBay
People have had good results with these.
By conventional naming this would be a "52mm" turbo (Compressor Inducer). Or also could be called a "52/58" turbo. (Compressor Inducer / Turbine Exducer).
I would suggest avoiding these for your setup based on compressor/turbine size.
Consider the On3 Performance 70mm turbos if you're looking for a budget twin setup:
On 3 Performance 70mm turbocharger T4 Camaro Firebird | eBay
People have had good results with these.
got one in today!
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 77
Likes: 0
FWIW-I am shocked the ebay turbo's always come up. I know some success but damn these ON3 70's flat out rock. The absolutely smoke the precision 62's I had. Not even close. I am not sure who has gone the fastest so far using the chinese turbo's but I would have to think that my 3720lb chevelle that has run 6.00@116.85mph has to be at least one of the fastest. I have put these things through the ringer at the drag strip and on the street. I drive an average of 300 miles a week. I take my kids to school and pick them up everyday unless the weather is just absolutley horrible. These turbo's have not missed a beat. They ran awesome on my 5.3 and on my current 6.0.
Hope my experience has helped. A set of the On3 70's as was mentioned with a stock 5.3 will easily net the hp you are looking for.
Hope my experience has helped. A set of the On3 70's as was mentioned with a stock 5.3 will easily net the hp you are looking for.
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 77
Likes: 0
how much for a cam with this set up?
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TECH Resident
Joined: Nov 2011
Posts: 916
Likes: 5
From: Las Vegas, NV
Nice! I'm sure it will give you everything you're looking for in a nice compact size. And, I agree with Martin, run the cam you mentioned you had.
Now you need to change the name of the thread to "Twin ON3 70's" instead of "cam for twin GT45s"... and turn it into a build thread.
Keep us posted.
Now you need to change the name of the thread to "Twin ON3 70's" instead of "cam for twin GT45s"... and turn it into a build thread.
Keep us posted.
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 77
Likes: 0
Nice! I'm sure it will give you everything you're looking for in a nice compact size. And, I agree with Martin, run the cam you mentioned you had.
Now you need to change the name of the thread to "Twin ON3 70's" instead of "cam for twin GT45s"... and turn it into a build thread.
Keep us posted.
Now you need to change the name of the thread to "Twin ON3 70's" instead of "cam for twin GT45s"... and turn it into a build thread.
Keep us posted.
