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View Full Version : which injection system for 6.2L turbo



zetan
10-04-2015, 16:34
I've finished putting the heads on my new 6.2L
GM 10137567 heads, 3 dot pre-cups
14022660 3-2-81 bored .30 over

On top I will be installing a 6.5 turbo system (GM-8)
I have a selection of pumps and injectors to use.

2831 4911 - 6.5 turbo
2831 5088 - 6.5 N/A G van
2829 4646 - 1988 Heavy Duty C/KR/VP Truck & G Van
2829 4153 - 1982-83 Heavy Duty Truck - C K & P

Can I run a 2931 on the 6.2L or will it overfuel it?

Yukon6.2
10-08-2015, 18:20
Hi Zetan
I would use the 4911 pump if it's in good shape,use 6.5 injectors with the corresponding lines.Hopefully you got it as a complete system.Not all lines fit all injectors or pumps.
With the turbo you will be using all the extra fuel the 6.5 stuff puts out.You should have gauges to watch how the motor is performing.The 6.2 pistons will melt quicker than the 6.5 pistons.
Thomas