Lifetime of a 408 w/ boost???
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From: strong island, NY
Lifetime of a 408 w/ boost??? Anyone have an idea on how long a 408, with a turbo, and a safe tune might last on a daily driver? No track time, and very little street racing... I heard that stroker motors dont last long in daily drivers, let alone with boost on top of things...
Teching In
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From: Western Australia
I have a whipple blown/intercooled 382ci stroker in my 04 Monaro and it has over 15000 miles on it, only a couple of passes at the track = 127 mph. Callies 4" crank, Scat H beams and Ross pistons, Comp XER 232/236 cam. I was prepared to be changing valve springs by now ( Isky ) but a dyno pull revealed it's still making the same power as two years ago.
No oil usage. Quality hardware and a good engine builder and tuner
I reckon I got my moneys worth and it will go another 15000 miles. Engine oil changed every 2000 miles which will be even more important with the turbo's
No oil usage. Quality hardware and a good engine builder and tuner
I reckon I got my moneys worth and it will go another 15000 miles. Engine oil changed every 2000 miles which will be even more important with the turbo's 
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
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If it is tuned safe it'll last a long time! (ie: 50K miles or more)
Couple of tips for your average 700RWHP plus "street" car:
1) Go iron block for longevity (No block distortion at higher hp levels compared to alum)
2) Keep the revs down (sub 6400rpms)
3) Keep the comp low (ie: 8.0:1 for 15#s boost if using pump gas)
4) Good fuel system with coolers on the lines
5) Air to air intercooling (A2W is more prone to failure on the street compared to A2A)
6) Gravity return on turbo or blower (no pump to fail)
7) Use stock fans if possible
8) Get a GREAT tuner to tune it (Tuning on a load dyno (eddy current) and lots of street tuning
9) Keep cam lift relatively low. You dont need huge lift on a blower/turbo car to make power and keeping the lift lower will lead to longer spring/lifter life.
10) Get the best tensioner bracket setup you can buy.
That is about it. I know guys with 50K miles on there setups. They change blower belts sometimes every year though many say they can go two years
Couple of tips for your average 700RWHP plus "street" car:
1) Go iron block for longevity (No block distortion at higher hp levels compared to alum)
2) Keep the revs down (sub 6400rpms)
3) Keep the comp low (ie: 8.0:1 for 15#s boost if using pump gas)
4) Good fuel system with coolers on the lines
5) Air to air intercooling (A2W is more prone to failure on the street compared to A2A)
6) Gravity return on turbo or blower (no pump to fail)
7) Use stock fans if possible
8) Get a GREAT tuner to tune it (Tuning on a load dyno (eddy current) and lots of street tuning
9) Keep cam lift relatively low. You dont need huge lift on a blower/turbo car to make power and keeping the lift lower will lead to longer spring/lifter life.
10) Get the best tensioner bracket setup you can buy.
That is about it. I know guys with 50K miles on there setups. They change blower belts sometimes every year though many say they can go two years
Last edited by CHRISPY; Nov 11, 2006 at 02:10 PM.
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Teching In
Joined: Jun 2006
Posts: 5
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Originally Posted by VX 255
I have a whipple blown/intercooled 382ci stroker in my 04 Monaro and it has over 15000 miles on it, only a couple of passes at the track = 127 mph. Callies 4" crank, Scat H beams and Ross pistons, Comp XER 232/236 cam. I was prepared to be changing valve springs by now ( Isky ) but a dyno pull revealed it's still making the same power as two years ago.
No oil usage. Quality hardware and a good engine builder and tuner I reckon I got my moneys worth and it will go another 15000 miles. Engine oil changed every 2000 miles which will be even more important with the turbo's
No oil usage. Quality hardware and a good engine builder and tuner
I reckon I got my moneys worth and it will go another 15000 miles. Engine oil changed every 2000 miles which will be even more important with the turbo's
