Gould Gr 37 sbc

Post maps up for others to get them going in the right direction. DISCLAIMER: USE AT YOUR OWN RISK. CONFIRM VALUES!
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jpr.racing07
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Joined: Sun Feb 12, 2012 5:11 am
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Gould Gr 37 sbc

Post by jpr.racing07 »

After a winter of fitting fuel injection to the car, its nearly finished and i am looking for a base map for a small block chevy 377 gen i (i don't mind paying) its just to get the engine fired up to check for leaks and other disasters that may happen, before i bring it to the uk to find someone who can set it up correctly. Jeremy
Ps its a p8 system
Roverdose
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Re: Gould Gr 37 sbc

Post by Roverdose »

what kind of crank trigger does it have? off the flywheel of a seperate one on the front?

Drew
jpr.racing07
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Re: Gould Gr 37 sbc

Post by jpr.racing07 »

Hi thanks for the reply it has a front trigger wheel, 36 minus 1, ford coils waisted spark. Jeremy
Roverdose
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Re: Gould Gr 37 sbc

Post by Roverdose »

bit of manual tuning needed for that, piston 1 at tdc and count the teeth back from the sensor to the gap.

what size injectors are you using?

Drew
stevieturbo
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Re: Gould Gr 37 sbc

Post by stevieturbo »

Follow the manual, carry out basic checks on all sensors etc etc configure the trigger wheel settings for your specific fitment and after that, and as you do that, you're building your own basic startup map for your specific engine.

"base map" would only apply if someone had an identical setup to yours in every way, using all the same sensors, trigger positions, coils, injectors, wiring etc.
Which lets face it, will be a rarity.
jpr.racing07
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Re: Gould Gr 37 sbc

Post by jpr.racing07 »

Thanks again , will do that when the time comes , or could always call a gsy man to come and help me
stevieturbo
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Re: Gould Gr 37 sbc

Post by stevieturbo »

Although...didnt you have this running not that long ago ? Or is it a different car I'm thinking of ?

One with the trigger wheel that needed adjusted ?
jpr.racing07
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Joined: Sun Feb 12, 2012 5:11 am
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Re: Gould Gr 37 sbc

Post by jpr.racing07 »

Same car Steve just binned the carb and put throttle bodies on it now,toget the best out of the p8
stevieturbo
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Re: Gould Gr 37 sbc

Post by stevieturbo »

If you had ignition running, then half the battle is done really.

As far as fuel goes, either leave all temp compensations at zero, or copy settings from another map. But really, every engine is unique so there is no generic setup for all.

Then to start, either use a dyno box to make fast changes to the entire map, or just grab the entire block of cells and raise them up or down until the car starts.

generally start low and add fuel until it starts and runs. This may involve a little more cranking, but it means you wont drown the plugs which will itself inhibit starting. So you would never be sure if the settings were wrong, or if the wet plugs were the problem.

What size of injectors do you have ?

But as Ive said many times. Just make block changes to get the engine started and running. When it is running again, keep an eye on AFR's, dont let it get far too rich, but keep the engine happy until it is fully warmed up. Again just trim the entire map, or block of cells where the engine is currently running ( ie all below say 3000rpm ). Dont worry about single cells yet ( assuming all cells dont have vastly different numbers )

Once the engine is fully warm, dial in an AFR the engine is happy with and as close to say 14.0:1 as possible. Most engines should be happy at that, and it is quite lean enough that there is no risk of overfuelling.

Only then when you have hot running and hot restarting sorted can you even consider stepping back to look at cold start and warmup enrichment settings.
If you cant be sure the engine will start easily when warm, you've no mission of doing it reliably when cold. Hence it is best to work in the order described.

Also once running, you'll need to ensure all your throttle blades are balanced. But you'll need a stable idle or rpm to do that as well.
jpr.racing07
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Joined: Sun Feb 12, 2012 5:11 am
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Re: Gould Gr 37 sbc

Post by jpr.racing07 »

Thanks for the info Steve will give it a go, Jeremy
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