E85 questions for topswap build!

[suitercrew]

Hey guys im wanting to convert to e85. I just had a question about the necessity of upgrading the stock fuel pump. Some people say upgrade some people say stock with a hotwire is fine. Also since im topswapped i know the gtp have 2 speed pumps and mine is one speed but i couldnt find any info on if the gt pumps have the same fuel flow rate. Tha ks everyone!

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[GTPpower]

What are your mods?

[SgtMarshal]

What are your mods?

if I remember right, he is top swapped, with rockers, headers, and possibly 42.5 injectors.

[suitercrew]

Topswapped, stock pulley, fwi, headers

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[SgtMarshal]

here is some more info for you:

http://www.grandprixforums.net/threa...ur-car-for-e85

[GTPpower]

A gtp pump will start losing pressure around the 3.0 pulley range, dependant on a few things. You should be fine down to about a 3.2, I would think.

[b4black]

Connect a pressure gauge on a long hose to the fuel rail. Tape it to the windshield and go for a ride. If it build pressure with boost all the way through WOT, then you have enough pump.

Only if it can't keep up, do you need to upgrade.