zz502 fit??
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
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From: Glasgow, Scotland
zz502 fit??
does the bb zz502 just drop into a 78 vette, or do you need to change engine mounting brackets on chassis, also is there anything in the engine bay that will foul the engine?, also I take it the th350 gearbox etc, will fit straight on??
also any other things to look out for with this change??
cheers
dave
also any other things to look out for with this change??
cheers
dave
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
does the bb zz502 just drop into a 78 vette, or do you need to change engine mounting brackets on chassis, also is there anything in the engine bay that will foul the engine?, also I take it the th350 gearbox etc, will fit straight on??
also any other things to look out for with this change??
cheers
dave
also any other things to look out for with this change??
cheers
dave
A 502 will fit in a 78...no problem..
Drifting
Joined: Oct 2005
Posts: 1,527
Likes: 148
From: East London/SW Essex UK
does the bb zz502 just drop into a 78 vette, or do you need to change engine mounting brackets on chassis, also is there anything in the engine bay that will foul the engine?, also I take it the th350 gearbox etc, will fit straight on??
also any other things to look out for with this change??
cheers
dave
also any other things to look out for with this change??
cheers
dave
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
Likes: 0
From: Glasgow, Scotland
I will do that, not sure what to do just weighing up the options, one good think about the 502 is the level of power you can get from it must be higher than a 350 stroker??
Race Director
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Team Owner
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From: Sorrento Italy
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Instructor
Joined: Dec 2007
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From: Gulfport Ms.
does the bb zz502 just drop into a 78 vette, or do you need to change engine mounting brackets on chassis, also is there anything in the engine bay that will foul the engine?, also I take it the th350 gearbox etc, will fit straight on??
also any other things to look out for with this change??
cheers
dave
also any other things to look out for with this change??
cheers
dave
Race Director
Joined: Feb 2005
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Thread Starter
Racer
Joined: Jul 2007
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From: Glasgow, Scotland
whats the best option, i just dont know what to go for, one thing is for sure I want a good 500bhp engine.
dave
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From: Gulfport Ms.
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Drifting
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From: Springfield Illinois
Le Mans Master
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From: Little Rock AR
Maybe someone here will comment on the acessory brackets and pulley requirements from someone who has been through the swap already. GM sells a full acessory mounting kit but it might not be the best way to accomplish the C3 sb to bb swap. 
Anybody been there - done that?
-Mark.
Anybody been there - done that?-Mark.
Race Director
Joined: Feb 2005
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Maybe someone here will comment on the acessory brackets and pulley requirements from someone who has been through the swap already. GM sells a full acessory mounting kit but it might not be the best way to accomplish the C3 sb to bb swap. Anybody been there - done that?
-Mark.
Anybody been there - done that?-Mark.
I purchased some brackets at Zip....
Rich
Le Mans Master
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From: Little Rock AR
Drifting
Joined: Oct 2005
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From: East London/SW Essex UK
Dave, I have 427 manual (not quick enough), I am having a fresh stroker 496 built-up shortly, this will be costing me in the region of £7.5K+ all in for (if I'm lucky 550/580 hp) You can get your small block engine' stroked' with perhaps a 450/525 hp built-up in UK for perhaps a grand less than that (or even less from 'States) - no essential gearbox changes - or spring changes - or drive shaft changes - bolt straight in with perhaps a torque converter change? Remember it ain't HP that does the job but TORQUE!
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
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From: Glasgow, Scotland
Dave, I have 427 manual (not quick enough), I am having a fresh stroker 496 built-up shortly, this will be costing me in the region of £7.5K+ all in for (if I'm lucky 550/580 hp) You can get your small block engine' stroked' with perhaps a 450/525 hp built-up in UK for perhaps a grand less than that (or even less from 'States) - no essential gearbox changes - or spring changes - or drive shaft changes - bolt straight in with perhaps a torque converter change? Remember it ain't HP that does the job but TORQUE!
the going rate for a zz383(425bhp) long block, is about 5000$, =£2500 + tax/shipping comes out around £3500, just need a intake, carb and water pump, I just brought a rpm airgap and a holley 750 vac sec
so this does seem like, the cheapest way for more power
also the zz383 comes with a mild cam so they claim, so still room for improvement
cheers
dave
Last edited by agent kronus; Dec 30, 2007 at 08:04 PM.