the infamous 7/4 cam swap
04-14-2009, 08:27 PM
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Car: 88 GTA
Engine: L98 350 TPI
Transmission: 700 R4
the infamous 7/4 cam swap
ok i know how and y the 7/4 is a good swap on the cam firing order i know that its an easy swap on a carbed small block but with fuel injection like we have would it be an issue or since its not sequential it wouldnt have a problem with having to reprogram the computer with the different firing order
04-14-2009, 08:49 PM
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Car: Red 1987 IROC Convertible
Engine: 305 LB9 TPI
Transmission: T5 5-Speed
Axle/Gears: 9-Bolt 3.45
Re: the infamous 7/4 cam swap
I think it's not a fuel delivery issue with TPI. Do it if that's what you want.
04-15-2009, 07:58 AM
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Car: 88 GTA
Engine: L98 350 TPI
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Re: the infamous 7/4 cam swap
ok coool so all i have to do is swap to the plug wires on the cap and the fuel doesnt matter thanks guys
04-15-2009, 10:53 AM
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04-15-2009, 12:01 PM
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Re: the infamous 7/4 cam swap
what does the swap do..never heard of that
04-15-2009, 12:28 PM
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Re: the infamous 7/4 cam swap
i know i need to change the cam lol i ment the only other thing ide have to do was swap the wires no fuel mods
the swap moves 7 and 4 in the firing order so it goes from 18436572 to 18736542 wen u split the firing order in half 7 and 4 r companion cylinders and wat it does is changes the dtc for compressoin and exhaust and it reduces vibration and stress on the crank wen either of the cylinders or on there tdc position it also gives more power on the top end nothign crazy but its been like a proven 10-12hp at 5500
the swap moves 7 and 4 in the firing order so it goes from 18436572 to 18736542 wen u split the firing order in half 7 and 4 r companion cylinders and wat it does is changes the dtc for compressoin and exhaust and it reduces vibration and stress on the crank wen either of the cylinders or on there tdc position it also gives more power on the top end nothign crazy but its been like a proven 10-12hp at 5500
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