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Author Topic:   Proform double pumper main body
popeye
Gearhead

Posts: 124
From: midwest USA
Registered: Dec 2002

posted 04-19-2003 03:32 AM     Click Here to See the Profile for popeye   Click Here to Email popeye     Edit/Delete Message   Reply w/Quote
Has anybody had any experience with the # 67100c replacement main body as far as a starting point for jetting,squirters and pump cam sizing.Also,what do you think about a pv? It just has one in the front or should I take it out and put a plug in it's place. This replaces an old 4779 dp with the roller style linkage for the secondaries so I had to replace the base plate and now have one with thinned throttle shafts and butterflies.This is a strip car only and making about 450 fw hp.Best ET 11.40/116mph,3100# w/driver 351w 389 gear 29x10 Stones C4/4500 stall 8" converter w/old dp 750 up 3 steps,front & rear from factory jetting? thanks

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This is FORD COUNTRY, where on a quiet night, you can here a chevy rusting

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steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 04-19-2003 11:52 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Plug the front pv and up the jets 6 -8 sizes for a start. Especially if you're leaving off a 2 step. P.V.s are only nice to have on a street car.

Also lock out your timing to full advance all the time! If you haven't already, it'll idle much better and have all the torque it can from the hit of the go peddle.

SteveW

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popeye
Gearhead

Posts: 124
From: midwest USA
Registered: Dec 2002

posted 04-20-2003 12:39 AM     Click Here to See the Profile for popeye   Click Here to Email popeye     Edit/Delete Message   Reply w/Quote
Steve thanks for the reply.I also would like to here opinions and experiences on squaring the jetting.

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This is FORD COUNTRY, where on a quiet night, you can here a chevy rusting

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Moneymaker
Administrator

Posts: 21725
From: Lyons, IL, USA
Registered: May 99

posted 04-20-2003 12:45 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Windsor headed SBF's don't like square jetting. The intake design does not promote it.

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Alex Denysenko
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