I've got a Holley 3310, which is a 750 vac sec carb w/ the metering plate for the secondaries. I've also got a old 650 dblpmpr that's wasted that has the standard secondary metering block w/ jets. Is there anything stopping me from just swapping the 650s metering block w/ jets onto the 3310? I've seen little kits for sale to do this, are they just the standard metering block or is there something special required?

I'm just thinking I could probably tune this carb better for my engine by screwing around w/ the jets for the secondaries instead of trusting whatever the stock crap is setup for.

BTW, how many sizes larger do you go on the rear jets than the front jets? On average of course, just wanted somewhere to start.

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

 

you'll need different gaskets, the longer bolts from the donor carb. IF it's a single inl;et carb, you'll also need a longer transfer tube. Other than that, it should bolt right up

 

They both should have center-hung float bowls, so hopefully a transfer tube won't be an issue. The only problem I could forsee is the accel pump from the DP not being used (not really a problem...)


I usually end up with my secondary jets 2 - 4 above the primary jets. It would be better to road tune it rather than take my word for it.

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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 WS6 Trans Am T-top car
4-bolt main 350, headers, Holley 650, T-5 and 3.23's.
Daily driver and restoration

 

I think the accelerator pump passage will be no problem. I got on of the 4160/4150 conversion kits and the passage is cast in but not drilled. Definately road tune the carb though. If you give me the numbers off the plate I can look them up and tell you the equivalent jet size so you know where to start.

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82 z28 350cid, vortec heads, comp 262h cam, Holley 600cfm carb, 2in twice pipes, MSD ignition, turbo 350 trans, 3.73 posi

 

you need the metering block and the bolts from the 4777. use the 3310 fuel bowels. you will need a DP fuel line. and you will need regular DP metering block gasket.

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when the green flag drops the bull$hit stops

350,performer RPM intake ,650dp, 700r4, headers, 3inch exhast

[This message has been edited by GOLD85 (edited November 10, 2000).]

 

You need to take out the power valve and install a power valve plug.

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Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car and knocking on the SuperPro ET class
383 stroker (carbed) with double hump cast iron heads and pump gas
454 Big Block buildup now in progress for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857
Best corrected ET: 11.163
Best MPH on a time slip: 117.87
Best corrected MPH: 126.10
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car
91 454SS daily driver
95 Homebuilt Harley