Installing a Gen1 350 inplace of a Gen2 350w/tbi - Pirate4x4.Com : 4x4 and Off-Road Forum

4544x4 · 08-06-2006, 04:45 PM

I want to use the TBI setup on the Gen 1 350.Truck is a 90 GMC V3500.I was wondering if all the sensors and intake from the Gen2 Will bolt right on the Gen1.

And any horror storys would help, So i know what to avoid.

Thanks,
Windle

Home Built · 08-06-2006, 06:24 PM

I think the only thing that might be different is the angle of the 4 center bolts on the intake are more staight up and down ,compared to the earlier 350's. You can use the intake but you will have to re-drill the holes to the correct angle to make it work, I did this on my truck and had no problems with leaks or anything. I don't think there were any differnces untill after 92 so you should be ok.

Beater_K20 · 08-06-2006, 08:07 PM

center 4 bolts on the 86+ engines (86 was carbed, 87 started TBI) are drilled at 72* from the intake flange, where pre-85 engines were drilled at 90*. nothing else different. the first real difference started in 96, with the introduction of the Vortec intake flange, everything before that is pretty much bolt on.

08-06-2006, 04:45 PM	#1 (permalink)
4544x4 Registered User Join Date: Aug 2004 Member # 34587 Location: Edmond,Oklahoma Posts: 289	Installing a Gen1 350 inplace of a Gen2 350w/tbi I want to use the TBI setup on the Gen 1 350.Truck is a 90 GMC V3500.I was wondering if all the sensors and intake from the Gen2 Will bolt right on the Gen1. And any horror storys would help, So i know what to avoid. Thanks, Windle __________________ Chupa la verga

08-06-2006, 06:24 PM	#2 (permalink)
Home Built Registered User Join Date: Jul 2001 Member # 5734 Location: Redding Posts: 706	I think the only thing that might be different is the angle of the 4 center bolts on the intake are more staight up and down ,compared to the earlier 350's. You can use the intake but you will have to re-drill the holes to the correct angle to make it work, I did this on my truck and had no problems with leaks or anything. I don't think there were any differnces untill after 92 so you should be ok. __________________ [B]Chicks dig body Damage...[/B] 74 Chevy Fullsize, 39.5 Irocs, D60/FF14bolt, Locked, Lifted, Stroked, Fuel Injected, Hydro assist. with lot's of body damage...

08-06-2006, 08:07 PM	#3 (permalink)
Beater_K20 Registered User Join Date: Jan 2004 Member # 26545 Location: Elkhart, IN, USA Posts: 446	center 4 bolts on the 86+ engines (86 was carbed, 87 started TBI) are drilled at 72* from the intake flange, where pre-85 engines were drilled at 90*. nothing else different. the first real difference started in 96, with the introduction of the Vortec intake flange, everything before that is pretty much bolt on. __________________ 93 Chevy C2500 - 10 bolt/14FF 5.13s Detroit rear 454/80E/NP241 - SAS in progress

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